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The managed clusters on Google Container Engine is the most convenient way.",source:"@site/docs/deployment/kubernetes.md",sourceDirName:"deployment",slug:"/deployment/kubernetes",permalink:"/docs/next/deployment/kubernetes",draft:!1,tags:[],version:"current",frontMatter:{id:"kubernetes",title:"Deploying Apache BookKeeper on Kubernetes"},sidebar:"docsSidebar",previous:{title:"Manual deployment",permalink:"/docs/next/deployment/manual"},next:{title:"BookKeeper administration",permalink:"/docs/next/admin/bookies"}},p={},i=[{value:"Setup on Google Container Engine",id:"setup-on-google-container-engine",level:2},{value:"Prerequisites",id:"prerequisites",level:3},{value:"Create a new Kubernetes cluster",id:"create-a-new-kubernetes-cluster",level:3},{value:"Dashboard",id:"dashboard",level:3},{value:"ZooKeeper",id:"zookeeper",level:3},{value:"Deploy Bookies",id:"deploy-bookies",level:3},{value:"Un-Deploy",id:"un-deploy",level:3}],u={toc:i},c="wrapper";function d(e){let{components:t,...n}=e;return(0,a.kt)(c,(0,o.Z)({},u,n,{components:t,mdxType:"MDXLayout"}),(0,a.kt)("p",null,"Apache BookKeeper can be easily deployed in ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/"},"Kubernetes")," clusters. The managed clusters on ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/"},"Google Container Engine")," is the most convenient way."),(0,a.kt)("p",null,"The deployment method shown in this guide relies on ",(0,a.kt)("a",{parentName:"p",href:"http://yaml.org/"},"YAML")," definitions for Kubernetes ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/resources-reference/v1.6/"},"resources"),". The ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes"},(0,a.kt)("inlineCode",{parentName:"a"},"kubernetes"))," subdirectory holds resource definitions for:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"A three-node ZooKeeper cluster"),(0,a.kt)("li",{parentName:"ul"},"A BookKeeper cluster with a bookie runs on each node.")),(0,a.kt)("h2",{id:"setup-on-google-container-engine"},"Setup on Google Container Engine"),(0,a.kt)("p",null,"To get started, get source code of ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes"},(0,a.kt)("inlineCode",{parentName:"a"},"kubernetes"))," from github by git clone."),(0,a.kt)("p",null,"If you'd like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the ",(0,a.kt)("inlineCode",{parentName:"p"},"replicas")," parameter in the ",(0,a.kt)("inlineCode",{parentName:"p"},"spec")," section of the appropriate ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/deployment/"},(0,a.kt)("inlineCode",{parentName:"a"},"Deployment"))," or ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/"},(0,a.kt)("inlineCode",{parentName:"a"},"StatefulSet"))," resource."),(0,a.kt)("p",null,(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/kubernetes-engine"},"Google Container Engine")," (GKE) automates the creation and management of Kubernetes clusters in ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/"},"Google Compute Engine")," (GCE)."),(0,a.kt)("h3",{id:"prerequisites"},"Prerequisites"),(0,a.kt)("p",null,"To get started, you'll need:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"A Google Cloud Platform account, which you can sign up for at ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com"},"cloud.google.com")),(0,a.kt)("li",{parentName:"ul"},"An existing Cloud Platform project"),(0,a.kt)("li",{parentName:"ul"},"The ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com/sdk/downloads"},"Google Cloud SDK")," (in particular the ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com/sdk/gcloud/"},(0,a.kt)("inlineCode",{parentName:"a"},"gcloud"))," and ",(0,a.kt)("a",{parentName:"li",href:"https://kubernetes.io/docs/tasks/tools/"},(0,a.kt)("inlineCode",{parentName:"a"},"kubectl"))," tools).")),(0,a.kt)("h3",{id:"create-a-new-kubernetes-cluster"},"Create a new Kubernetes cluster"),(0,a.kt)("p",null,"You can create a new GKE cluster using the ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/sdk/gcloud/reference/container/clusters/create"},(0,a.kt)("inlineCode",{parentName:"a"},"container clusters create"))," command for ",(0,a.kt)("inlineCode",{parentName:"p"},"gcloud"),". This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more."),(0,a.kt)("p",null,"As an example, we'll create a new GKE cluster for Kubernetes version ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164"},"1.6.4")," in the ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/regions-zones/regions-zones#available"},"us-central1-a")," zone. The cluster will be named ",(0,a.kt)("inlineCode",{parentName:"p"},"bookkeeper-gke-cluster")," and will consist of three VMs, each using two locally attached SSDs and running on ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/machine-types"},"n1-standard-8")," machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud config set compute/zone us-central1-a\n$ gcloud config set project your-project-name\n$ gcloud container clusters create bookkeeper-gke-cluster \\\n  --machine-type=n1-standard-8 \\\n  --num-nodes=3 \\\n  --local-ssd-count=2 \\\n  --enable-kubernetes-alpha\n")),(0,a.kt)("p",null,"By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/overview/working-with-objects/labels"},"labels"),"."),(0,a.kt)("h3",{id:"dashboard"},"Dashboard"),(0,a.kt)("p",null,"You can observe your cluster in the ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/"},"Kubernetes Dashboard")," by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters get-credentials bookkeeper-gke-cluster \\\n  --zone=us-central1-a \\\n  --project=your-project-name\n$ kubectl proxy\n")),(0,a.kt)("p",null,"By default, the proxy will be opened on port 8001. Now you can navigate to ",(0,a.kt)("a",{parentName:"p",href:"http://localhost:8001/ui"},"localhost:8001/ui")," in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying."),(0,a.kt)("p",null,"When you create a cluster, your ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," config in ",(0,a.kt)("inlineCode",{parentName:"p"},"~/.kube/config")," (on MacOS and Linux) will be updated for you, so you probably won't need to change your configuration. Nonetheless, you can ensure that ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," can interact with your cluster by listing the nodes in the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get nodes\n")),(0,a.kt)("p",null,"If ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," is working with your cluster, you can proceed to deploy ZooKeeper and Bookies."),(0,a.kt)("h3",{id:"zookeeper"},"ZooKeeper"),(0,a.kt)("p",null,"You ",(0,a.kt)("em",{parentName:"p"},"must")," deploy ZooKeeper as the first component, as it is a dependency for the others."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl apply -f zookeeper.yaml\n")),(0,a.kt)("p",null,"Wait until all three ZooKeeper server pods are up and have the status ",(0,a.kt)("inlineCode",{parentName:"p"},"Running"),". You can check on the status of the ZooKeeper pods at any time:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods -l component=zookeeper\nNAME      READY     STATUS             RESTARTS   AGE\nzk-0      1/1       Running            0          18m\nzk-1      1/1       Running            0          17m\nzk-2      0/1       Running            6          15m\n")),(0,a.kt)("p",null,"This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs."),(0,a.kt)("p",null,"If you want to connect to one of the remote zookeeper server, you can use",(0,a.kt)("a",{parentName:"p",href:"https://github.com/rgs1/zk_shell"},"zk-shell"),", you need to forward a local port to the\nremote zookeeper server:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl port-forward zk-0 2181:2181\n$ zk-shell localhost 2181\n")),(0,a.kt)("h3",{id:"deploy-bookies"},"Deploy Bookies"),(0,a.kt)("p",null,"Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/"},"DaemonSet")," or a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/"},"StatefulSet"),"."),(0,a.kt)("blockquote",null,(0,a.kt)("p",{parentName:"blockquote"},"NOTE: ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," vs ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the\ncluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn't require any external storage for Persistent\nVolumes."),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods\nare not interchangeable, the idenifiers for each pod are maintained across any rescheduling."),(0,a.kt)("p",{parentName:"blockquote"},"Which one to use? A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," is the easiest way to deploy a bookkeeper cluster, because it doesn't require additional persistent volume provisioner and use local disks. BookKeeper manages\nthe data replication. It maintains the best latency property. However, it uses ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and ",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," for communications between pods. In some k8s platform (such as DC/OS), ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and\n",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," are not well supported. A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," is only practical when deploying in a cloud environment or any K8S installation that has persistent volumes available. Also be aware, latency\ncan be potentially higher when using persistent volumes, because there is usually built-in replication in the persistent volumes.")),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"# deploy bookies in a daemon set\n$ kubectl apply -f bookkeeper.yaml\n\n# deploy bookies in a stateful set\n$ kubectl apply -f bookkeeper.stateful.yaml\n")),(0,a.kt)("p",null,"You can check on the status of the Bookie pods for these components either in the Kubernetes Dashboard or using ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl"),":"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods\n")),(0,a.kt)("p",null,"While all BookKeeper pods is Running, by zk-shell you could find all available bookies under /ledgers/"),(0,a.kt)("p",null,"You could also run a ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/ivankelly/bookkeeper-tutorial/"},"bookkeeper tutorial")," instance, which named as 'dice' here, in this bookkeeper cluster."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},'$\ufeffkubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"\n')),(0,a.kt)("p",null,"An example output of Dice instance is like this:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-aidl"},'\u279c $ kubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"          \nIf you don\'t see a command prompt, try pressing enter.\nValue = 1, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 2, epoch = 5, leading\n')),(0,a.kt)("h3",{id:"un-deploy"},"Un-Deploy"),(0,a.kt)("p",null,"Delete Demo dice instance"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$\ufeffkubectl delete deployment dice      \n")),(0,a.kt)("p",null,"Delete BookKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f bookkeeper.yaml    \n")),(0,a.kt)("p",null,"Delete ZooKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f zookeeper.yaml    \n")),(0,a.kt)("p",null,"Delete cluster"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters delete bookkeeper-gke-cluster    \n")))}d.isMDXComponent=!0}}]);
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The managed clusters on Google Container Engine is the most convenient way.",source:"@site/versioned_docs/version-4.11.1/deployment/kubernetes.md",sourceDirName:"deployment",slug:"/deployment/kubernetes",permalink:"/docs/4.11.1/deployment/kubernetes",draft:!1,tags:[],version:"4.11.1",frontMatter:{id:"kubernetes",title:"Deploying Apache BookKeeper on Kubernetes"},sidebar:"version-4.11.1/docsSidebar",previous:{title:"Manual deployment",permalink:"/docs/4.11.1/deployment/manual"},next:{title:"BookKeeper administration",permalink:"/docs/4.11.1/admin/bookies"}},i={},p=[{value:"Setup on Google Container Engine",id:"setup-on-google-container-engine",level:2},{value:"Prerequisites",id:"prerequisites",level:3},{value:"Create a new Kubernetes cluster",id:"create-a-new-kubernetes-cluster",level:3},{value:"Dashboard",id:"dashboard",level:3},{value:"ZooKeeper",id:"zookeeper",level:3},{value:"Deploy Bookies",id:"deploy-bookies",level:3},{value:"Un-Deploy",id:"un-deploy",level:3}],u={toc:p},c="wrapper";function d(e){let{components:t,...n}=e;return(0,a.kt)(c,(0,o.Z)({},u,n,{components:t,mdxType:"MDXLayout"}),(0,a.kt)("p",null,"Apache BookKeeper can be easily deployed in ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/"},"Kubernetes")," clusters. The managed clusters on ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/"},"Google Container Engine")," is the most convenient way."),(0,a.kt)("p",null,"The deployment method shown in this guide relies on ",(0,a.kt)("a",{parentName:"p",href:"http://yaml.org/"},"YAML")," definitions for Kubernetes ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/resources-reference/v1.6/"},"resources"),". The ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes"},(0,a.kt)("inlineCode",{parentName:"a"},"kubernetes"))," subdirectory holds resource definitions for:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"A three-node ZooKeeper cluster"),(0,a.kt)("li",{parentName:"ul"},"A BookKeeper cluster with a bookie runs on each node.")),(0,a.kt)("h2",{id:"setup-on-google-container-engine"},"Setup on Google Container Engine"),(0,a.kt)("p",null,"To get started, get source code of ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes"},(0,a.kt)("inlineCode",{parentName:"a"},"kubernetes"))," from github by git clone."),(0,a.kt)("p",null,"If you'd like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the ",(0,a.kt)("inlineCode",{parentName:"p"},"replicas")," parameter in the ",(0,a.kt)("inlineCode",{parentName:"p"},"spec")," section of the appropriate ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/deployment/"},(0,a.kt)("inlineCode",{parentName:"a"},"Deployment"))," or ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/"},(0,a.kt)("inlineCode",{parentName:"a"},"StatefulSet"))," resource."),(0,a.kt)("p",null,(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/kubernetes-engine"},"Google Container Engine")," (GKE) automates the creation and management of Kubernetes clusters in ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/"},"Google Compute Engine")," (GCE)."),(0,a.kt)("h3",{id:"prerequisites"},"Prerequisites"),(0,a.kt)("p",null,"To get started, you'll need:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"A Google Cloud Platform account, which you can sign up for at ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com"},"cloud.google.com")),(0,a.kt)("li",{parentName:"ul"},"An existing Cloud Platform project"),(0,a.kt)("li",{parentName:"ul"},"The ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com/sdk/downloads"},"Google Cloud SDK")," (in particular the ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com/sdk/gcloud/"},(0,a.kt)("inlineCode",{parentName:"a"},"gcloud"))," and ",(0,a.kt)("a",{parentName:"li",href:"https://kubernetes.io/docs/tasks/tools/"},(0,a.kt)("inlineCode",{parentName:"a"},"kubectl"))," tools).")),(0,a.kt)("h3",{id:"create-a-new-kubernetes-cluster"},"Create a new Kubernetes cluster"),(0,a.kt)("p",null,"You can create a new GKE cluster using the ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/sdk/gcloud/reference/container/clusters/create"},(0,a.kt)("inlineCode",{parentName:"a"},"container clusters create"))," command for ",(0,a.kt)("inlineCode",{parentName:"p"},"gcloud"),". This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more."),(0,a.kt)("p",null,"As an example, we'll create a new GKE cluster for Kubernetes version ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164"},"1.6.4")," in the ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/regions-zones/regions-zones#available"},"us-central1-a")," zone. The cluster will be named ",(0,a.kt)("inlineCode",{parentName:"p"},"bookkeeper-gke-cluster")," and will consist of three VMs, each using two locally attached SSDs and running on ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/machine-types"},"n1-standard-8")," machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud config set compute/zone us-central1-a\n$ gcloud config set project your-project-name\n$ gcloud container clusters create bookkeeper-gke-cluster \\\n  --machine-type=n1-standard-8 \\\n  --num-nodes=3 \\\n  --local-ssd-count=2 \\\n  --enable-kubernetes-alpha\n")),(0,a.kt)("p",null,"By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/overview/working-with-objects/labels"},"labels"),"."),(0,a.kt)("h3",{id:"dashboard"},"Dashboard"),(0,a.kt)("p",null,"You can observe your cluster in the ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/"},"Kubernetes Dashboard")," by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters get-credentials bookkeeper-gke-cluster \\\n  --zone=us-central1-a \\\n  --project=your-project-name\n$ kubectl proxy\n")),(0,a.kt)("p",null,"By default, the proxy will be opened on port 8001. Now you can navigate to ",(0,a.kt)("a",{parentName:"p",href:"http://localhost:8001/ui"},"localhost:8001/ui")," in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying."),(0,a.kt)("p",null,"When you create a cluster, your ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," config in ",(0,a.kt)("inlineCode",{parentName:"p"},"~/.kube/config")," (on MacOS and Linux) will be updated for you, so you probably won't need to change your configuration. Nonetheless, you can ensure that ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," can interact with your cluster by listing the nodes in the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get nodes\n")),(0,a.kt)("p",null,"If ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," is working with your cluster, you can proceed to deploy ZooKeeper and Bookies."),(0,a.kt)("h3",{id:"zookeeper"},"ZooKeeper"),(0,a.kt)("p",null,"You ",(0,a.kt)("em",{parentName:"p"},"must")," deploy ZooKeeper as the first component, as it is a dependency for the others."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl apply -f zookeeper.yaml\n")),(0,a.kt)("p",null,"Wait until all three ZooKeeper server pods are up and have the status ",(0,a.kt)("inlineCode",{parentName:"p"},"Running"),". You can check on the status of the ZooKeeper pods at any time:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods -l component=zookeeper\nNAME      READY     STATUS             RESTARTS   AGE\nzk-0      1/1       Running            0          18m\nzk-1      1/1       Running            0          17m\nzk-2      0/1       Running            6          15m\n")),(0,a.kt)("p",null,"This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs."),(0,a.kt)("p",null,"If you want to connect to one of the remote zookeeper server, you can use",(0,a.kt)("a",{parentName:"p",href:"https://github.com/rgs1/zk_shell"},"zk-shell"),", you need to forward a local port to the\nremote zookeeper server:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl port-forward zk-0 2181:2181\n$ zk-shell localhost 2181\n")),(0,a.kt)("h3",{id:"deploy-bookies"},"Deploy Bookies"),(0,a.kt)("p",null,"Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/"},"DaemonSet")," or a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/"},"StatefulSet"),"."),(0,a.kt)("blockquote",null,(0,a.kt)("p",{parentName:"blockquote"},"NOTE: ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," vs ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the\ncluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn't require any external storage for Persistent\nVolumes."),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods\nare not interchangeable, the idenifiers for each pod are maintained across any rescheduling."),(0,a.kt)("p",{parentName:"blockquote"},"Which one to use? A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," is the easiest way to deploy a bookkeeper cluster, because it doesn't require additional persistent volume provisioner and use local disks. BookKeeper manages\nthe data replication. It maintains the best latency property. However, it uses ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and ",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," for communications between pods. In some k8s platform (such as DC/OS), ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and\n",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," are not well supported. A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," is only practical when deploying in a cloud environment or any K8S installation that has persistent volumes available. Also be aware, latency\ncan be potentially higher when using persistent volumes, because there is usually built-in replication in the persistent volumes.")),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"# deploy bookies in a daemon set\n$ kubectl apply -f bookkeeper.yaml\n\n# deploy bookies in a stateful set\n$ kubectl apply -f bookkeeper.stateful.yaml\n")),(0,a.kt)("p",null,"You can check on the status of the Bookie pods for these components either in the Kubernetes Dashboard or using ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl"),":"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods\n")),(0,a.kt)("p",null,"While all BookKeeper pods is Running, by zk-shell you could find all available bookies under /ledgers/"),(0,a.kt)("p",null,"You could also run a ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/ivankelly/bookkeeper-tutorial/"},"bookkeeper tutorial")," instance, which named as 'dice' here, in this bookkeeper cluster."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},'$\ufeffkubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"\n')),(0,a.kt)("p",null,"An example output of Dice instance is like this:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-aidl"},'\u279c $ kubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"          \nIf you don\'t see a command prompt, try pressing enter.\nValue = 1, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 2, epoch = 5, leading\n')),(0,a.kt)("h3",{id:"un-deploy"},"Un-Deploy"),(0,a.kt)("p",null,"Delete Demo dice instance"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$\ufeffkubectl delete deployment dice      \n")),(0,a.kt)("p",null,"Delete BookKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f bookkeeper.yaml    \n")),(0,a.kt)("p",null,"Delete ZooKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f zookeeper.yaml    \n")),(0,a.kt)("p",null,"Delete cluster"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters delete bookkeeper-gke-cluster    \n")))}d.isMDXComponent=!0}}]);
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The managed clusters on Google Container Engine is the most convenient way.",source:"@site/versioned_docs/version-4.14.8/deployment/kubernetes.md",sourceDirName:"deployment",slug:"/deployment/kubernetes",permalink:"/docs/4.14.8/deployment/kubernetes",draft:!1,tags:[],version:"4.14.8",frontMatter:{id:"kubernetes",title:"Deploying Apache BookKeeper on Kubernetes"},sidebar:"version-4.14.8/docsSidebar",previous:{title:"Manual deployment",permalink:"/docs/4.14.8/deployment/manual"},next:{title:"BookKeeper administration",permalink:"/docs/4.14.8/admin/bookies"}},i={},p=[{value:"Setup on Google Container Engine",id:"setup-on-google-container-engine",level:2},{value:"Prerequisites",id:"prerequisites",level:3},{value:"Create a new Kubernetes cluster",id:"create-a-new-kubernetes-cluster",level:3},{value:"Dashboard",id:"dashboard",level:3},{value:"ZooKeeper",id:"zookeeper",level:3},{value:"Deploy Bookies",id:"deploy-bookies",level:3},{value:"Un-Deploy",id:"un-deploy",level:3}],u={toc:p},c="wrapper";function d(e){let{components:t,...n}=e;return(0,a.kt)(c,(0,o.Z)({},u,n,{components:t,mdxType:"MDXLayout"}),(0,a.kt)("p",null,"Apache BookKeeper can be easily deployed in ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/"},"Kubernetes")," clusters. 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This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more."),(0,a.kt)("p",null,"As an example, we'll create a new GKE cluster for Kubernetes version ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164"},"1.6.4")," in the ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/regions-zones/regions-zones#available"},"us-central1-a")," zone. The cluster will be named ",(0,a.kt)("inlineCode",{parentName:"p"},"bookkeeper-gke-cluster")," and will consist of three VMs, each using two locally attached SSDs and running on ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/machine-types"},"n1-standard-8")," machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud config set compute/zone us-central1-a\n$ gcloud config set project your-project-name\n$ gcloud container clusters create bookkeeper-gke-cluster \\\n  --machine-type=n1-standard-8 \\\n  --num-nodes=3 \\\n  --local-ssd-count=2 \\\n  --enable-kubernetes-alpha\n")),(0,a.kt)("p",null,"By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/overview/working-with-objects/labels"},"labels"),"."),(0,a.kt)("h3",{id:"dashboard"},"Dashboard"),(0,a.kt)("p",null,"You can observe your cluster in the ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/"},"Kubernetes Dashboard")," by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters get-credentials bookkeeper-gke-cluster \\\n  --zone=us-central1-a \\\n  --project=your-project-name\n$ kubectl proxy\n")),(0,a.kt)("p",null,"By default, the proxy will be opened on port 8001. Now you can navigate to ",(0,a.kt)("a",{parentName:"p",href:"http://localhost:8001/ui"},"localhost:8001/ui")," in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying."),(0,a.kt)("p",null,"When you create a cluster, your ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," config in ",(0,a.kt)("inlineCode",{parentName:"p"},"~/.kube/config")," (on MacOS and Linux) will be updated for you, so you probably won't need to change your configuration. Nonetheless, you can ensure that ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," can interact with your cluster by listing the nodes in the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get nodes\n")),(0,a.kt)("p",null,"If ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," is working with your cluster, you can proceed to deploy ZooKeeper and Bookies."),(0,a.kt)("h3",{id:"zookeeper"},"ZooKeeper"),(0,a.kt)("p",null,"You ",(0,a.kt)("em",{parentName:"p"},"must")," deploy ZooKeeper as the first component, as it is a dependency for the others."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl apply -f zookeeper.yaml\n")),(0,a.kt)("p",null,"Wait until all three ZooKeeper server pods are up and have the status ",(0,a.kt)("inlineCode",{parentName:"p"},"Running"),". You can check on the status of the ZooKeeper pods at any time:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods -l component=zookeeper\nNAME      READY     STATUS             RESTARTS   AGE\nzk-0      1/1       Running            0          18m\nzk-1      1/1       Running            0          17m\nzk-2      0/1       Running            6          15m\n")),(0,a.kt)("p",null,"This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs."),(0,a.kt)("p",null,"If you want to connect to one of the remote zookeeper server, you can use",(0,a.kt)("a",{parentName:"p",href:"https://github.com/rgs1/zk_shell"},"zk-shell"),", you need to forward a local port to the\nremote zookeeper server:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl port-forward zk-0 2181:2181\n$ zk-shell localhost 2181\n")),(0,a.kt)("h3",{id:"deploy-bookies"},"Deploy Bookies"),(0,a.kt)("p",null,"Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/"},"DaemonSet")," or a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/"},"StatefulSet"),"."),(0,a.kt)("blockquote",null,(0,a.kt)("p",{parentName:"blockquote"},"NOTE: ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," vs ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the\ncluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn't require any external storage for Persistent\nVolumes."),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods\nare not interchangeable, the idenifiers for each pod are maintained across any rescheduling."),(0,a.kt)("p",{parentName:"blockquote"},"Which one to use? A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," is the easiest way to deploy a bookkeeper cluster, because it doesn't require additional persistent volume provisioner and use local disks. BookKeeper manages\nthe data replication. It maintains the best latency property. However, it uses ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and ",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," for communications between pods. In some k8s platform (such as DC/OS), ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and\n",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," are not well supported. A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," is only practical when deploying in a cloud environment or any K8S installation that has persistent volumes available. Also be aware, latency\ncan be potentially higher when using persistent volumes, because there is usually built-in replication in the persistent volumes.")),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"# deploy bookies in a daemon set\n$ kubectl apply -f bookkeeper.yaml\n\n# deploy bookies in a stateful set\n$ kubectl apply -f bookkeeper.stateful.yaml\n")),(0,a.kt)("p",null,"You can check on the status of the Bookie pods for these components either in the Kubernetes Dashboard or using ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl"),":"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods\n")),(0,a.kt)("p",null,"While all BookKeeper pods is Running, by zk-shell you could find all available bookies under /ledgers/"),(0,a.kt)("p",null,"You could also run a ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/ivankelly/bookkeeper-tutorial/"},"bookkeeper tutorial")," instance, which named as 'dice' here, in this bookkeeper cluster."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},'$\ufeffkubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"\n')),(0,a.kt)("p",null,"An example output of Dice instance is like this:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-aidl"},'\u279c $ kubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"          \nIf you don\'t see a command prompt, try pressing enter.\nValue = 1, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 2, epoch = 5, leading\n')),(0,a.kt)("h3",{id:"un-deploy"},"Un-Deploy"),(0,a.kt)("p",null,"Delete Demo dice instance"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$\ufeffkubectl delete deployment dice      \n")),(0,a.kt)("p",null,"Delete BookKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f bookkeeper.yaml    \n")),(0,a.kt)("p",null,"Delete ZooKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f zookeeper.yaml    \n")),(0,a.kt)("p",null,"Delete cluster"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters delete bookkeeper-gke-cluster    \n")))}d.isMDXComponent=!0}}]);
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The managed clusters on Google Container Engine is the most convenient way.",source:"@site/versioned_docs/version-4.15.5/deployment/kubernetes.md",sourceDirName:"deployment",slug:"/deployment/kubernetes",permalink:"/docs/4.15.5/deployment/kubernetes",draft:!1,tags:[],version:"4.15.5",frontMatter:{id:"kubernetes",title:"Deploying Apache BookKeeper on Kubernetes"},sidebar:"docsSidebar",previous:{title:"Manual deployment",permalink:"/docs/4.15.5/deployment/manual"},next:{title:"BookKeeper administration",permalink:"/docs/4.15.5/admin/bookies"}},p={},i=[{value:"Setup on Google Container Engine",id:"setup-on-google-container-engine",level:2},{value:"Prerequisites",id:"prerequisites",level:3},{value:"Create a new Kubernetes cluster",id:"create-a-new-kubernetes-cluster",level:3},{value:"Dashboard",id:"dashboard",level:3},{value:"ZooKeeper",id:"zookeeper",level:3},{value:"Deploy Bookies",id:"deploy-bookies",level:3},{value:"Un-Deploy",id:"un-deploy",level:3}],u={toc:i},c="wrapper";function d(e){let{components:t,...n}=e;return(0,a.kt)(c,(0,o.Z)({},u,n,{components:t,mdxType:"MDXLayout"}),(0,a.kt)("p",null,"Apache BookKeeper can be easily deployed in ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/"},"Kubernetes")," clusters. The managed clusters on ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/"},"Google Container Engine")," is the most convenient way."),(0,a.kt)("p",null,"The deployment method shown in this guide relies on ",(0,a.kt)("a",{parentName:"p",href:"http://yaml.org/"},"YAML")," definitions for Kubernetes ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/resources-reference/v1.6/"},"resources"),". The ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes"},(0,a.kt)("inlineCode",{parentName:"a"},"kubernetes"))," subdirectory holds resource definitions for:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"A three-node ZooKeeper cluster"),(0,a.kt)("li",{parentName:"ul"},"A BookKeeper cluster with a bookie runs on each node.")),(0,a.kt)("h2",{id:"setup-on-google-container-engine"},"Setup on Google Container Engine"),(0,a.kt)("p",null,"To get started, get source code of ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes"},(0,a.kt)("inlineCode",{parentName:"a"},"kubernetes"))," from github by git clone."),(0,a.kt)("p",null,"If you'd like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the ",(0,a.kt)("inlineCode",{parentName:"p"},"replicas")," parameter in the ",(0,a.kt)("inlineCode",{parentName:"p"},"spec")," section of the appropriate ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/deployment/"},(0,a.kt)("inlineCode",{parentName:"a"},"Deployment"))," or ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/"},(0,a.kt)("inlineCode",{parentName:"a"},"StatefulSet"))," resource."),(0,a.kt)("p",null,(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/kubernetes-engine"},"Google Container Engine")," (GKE) automates the creation and management of Kubernetes clusters in ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/"},"Google Compute Engine")," (GCE)."),(0,a.kt)("h3",{id:"prerequisites"},"Prerequisites"),(0,a.kt)("p",null,"To get started, you'll need:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"A Google Cloud Platform account, which you can sign up for at ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com"},"cloud.google.com")),(0,a.kt)("li",{parentName:"ul"},"An existing Cloud Platform project"),(0,a.kt)("li",{parentName:"ul"},"The ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com/sdk/downloads"},"Google Cloud SDK")," (in particular the ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com/sdk/gcloud/"},(0,a.kt)("inlineCode",{parentName:"a"},"gcloud"))," and ",(0,a.kt)("a",{parentName:"li",href:"https://kubernetes.io/docs/tasks/tools/"},(0,a.kt)("inlineCode",{parentName:"a"},"kubectl"))," tools).")),(0,a.kt)("h3",{id:"create-a-new-kubernetes-cluster"},"Create a new Kubernetes cluster"),(0,a.kt)("p",null,"You can create a new GKE cluster using the ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/sdk/gcloud/reference/container/clusters/create"},(0,a.kt)("inlineCode",{parentName:"a"},"container clusters create"))," command for ",(0,a.kt)("inlineCode",{parentName:"p"},"gcloud"),". This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more."),(0,a.kt)("p",null,"As an example, we'll create a new GKE cluster for Kubernetes version ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164"},"1.6.4")," in the ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/regions-zones/regions-zones#available"},"us-central1-a")," zone. The cluster will be named ",(0,a.kt)("inlineCode",{parentName:"p"},"bookkeeper-gke-cluster")," and will consist of three VMs, each using two locally attached SSDs and running on ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/machine-types"},"n1-standard-8")," machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud config set compute/zone us-central1-a\n$ gcloud config set project your-project-name\n$ gcloud container clusters create bookkeeper-gke-cluster \\\n  --machine-type=n1-standard-8 \\\n  --num-nodes=3 \\\n  --local-ssd-count=2 \\\n  --enable-kubernetes-alpha\n")),(0,a.kt)("p",null,"By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/overview/working-with-objects/labels"},"labels"),"."),(0,a.kt)("h3",{id:"dashboard"},"Dashboard"),(0,a.kt)("p",null,"You can observe your cluster in the ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/"},"Kubernetes Dashboard")," by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters get-credentials bookkeeper-gke-cluster \\\n  --zone=us-central1-a \\\n  --project=your-project-name\n$ kubectl proxy\n")),(0,a.kt)("p",null,"By default, the proxy will be opened on port 8001. Now you can navigate to ",(0,a.kt)("a",{parentName:"p",href:"http://localhost:8001/ui"},"localhost:8001/ui")," in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying."),(0,a.kt)("p",null,"When you create a cluster, your ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," config in ",(0,a.kt)("inlineCode",{parentName:"p"},"~/.kube/config")," (on MacOS and Linux) will be updated for you, so you probably won't need to change your configuration. Nonetheless, you can ensure that ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," can interact with your cluster by listing the nodes in the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get nodes\n")),(0,a.kt)("p",null,"If ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," is working with your cluster, you can proceed to deploy ZooKeeper and Bookies."),(0,a.kt)("h3",{id:"zookeeper"},"ZooKeeper"),(0,a.kt)("p",null,"You ",(0,a.kt)("em",{parentName:"p"},"must")," deploy ZooKeeper as the first component, as it is a dependency for the others."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl apply -f zookeeper.yaml\n")),(0,a.kt)("p",null,"Wait until all three ZooKeeper server pods are up and have the status ",(0,a.kt)("inlineCode",{parentName:"p"},"Running"),". You can check on the status of the ZooKeeper pods at any time:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods -l component=zookeeper\nNAME      READY     STATUS             RESTARTS   AGE\nzk-0      1/1       Running            0          18m\nzk-1      1/1       Running            0          17m\nzk-2      0/1       Running            6          15m\n")),(0,a.kt)("p",null,"This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs."),(0,a.kt)("p",null,"If you want to connect to one of the remote zookeeper server, you can use",(0,a.kt)("a",{parentName:"p",href:"https://github.com/rgs1/zk_shell"},"zk-shell"),", you need to forward a local port to the\nremote zookeeper server:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl port-forward zk-0 2181:2181\n$ zk-shell localhost 2181\n")),(0,a.kt)("h3",{id:"deploy-bookies"},"Deploy Bookies"),(0,a.kt)("p",null,"Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/"},"DaemonSet")," or a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/"},"StatefulSet"),"."),(0,a.kt)("blockquote",null,(0,a.kt)("p",{parentName:"blockquote"},"NOTE: ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," vs ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the\ncluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn't require any external storage for Persistent\nVolumes."),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods\nare not interchangeable, the idenifiers for each pod are maintained across any rescheduling."),(0,a.kt)("p",{parentName:"blockquote"},"Which one to use? A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," is the easiest way to deploy a bookkeeper cluster, because it doesn't require additional persistent volume provisioner and use local disks. BookKeeper manages\nthe data replication. It maintains the best latency property. However, it uses ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and ",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," for communications between pods. In some k8s platform (such as DC/OS), ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and\n",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," are not well supported. A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," is only practical when deploying in a cloud environment or any K8S installation that has persistent volumes available. Also be aware, latency\ncan be potentially higher when using persistent volumes, because there is usually built-in replication in the persistent volumes.")),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"# deploy bookies in a daemon set\n$ kubectl apply -f bookkeeper.yaml\n\n# deploy bookies in a stateful set\n$ kubectl apply -f bookkeeper.stateful.yaml\n")),(0,a.kt)("p",null,"You can check on the status of the Bookie pods for these components either in the Kubernetes Dashboard or using ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl"),":"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods\n")),(0,a.kt)("p",null,"While all BookKeeper pods is Running, by zk-shell you could find all available bookies under /ledgers/"),(0,a.kt)("p",null,"You could also run a ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/ivankelly/bookkeeper-tutorial/"},"bookkeeper tutorial")," instance, which named as 'dice' here, in this bookkeeper cluster."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},'$\ufeffkubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"\n')),(0,a.kt)("p",null,"An example output of Dice instance is like this:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-aidl"},'\u279c $ kubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"          \nIf you don\'t see a command prompt, try pressing enter.\nValue = 1, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 2, epoch = 5, leading\n')),(0,a.kt)("h3",{id:"un-deploy"},"Un-Deploy"),(0,a.kt)("p",null,"Delete Demo dice instance"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$\ufeffkubectl delete deployment dice      \n")),(0,a.kt)("p",null,"Delete BookKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f bookkeeper.yaml    \n")),(0,a.kt)("p",null,"Delete ZooKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f zookeeper.yaml    \n")),(0,a.kt)("p",null,"Delete cluster"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters delete bookkeeper-gke-cluster    \n")))}d.isMDXComponent=!0}}]);
\ No newline at end of file
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The managed clusters on ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/"},"Google Container Engine")," is the most convenient way."),(0,a.kt)("p",null,"The deployment method shown in this guide relies on ",(0,a.kt)("a",{parentName:"p",href:"http://yaml.org/"},"YAML")," definitions for Kubernetes ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/resources-reference/v1.6/"},"resources"),". The ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes"},(0,a.kt)("inlineCode",{parentName:"a"},"kubernetes"))," subdirectory holds resource definitions for:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"A three-node ZooKeeper cluster"),(0,a.kt)("li",{parentName:"ul"},"A BookKeeper cluster with a bookie runs on each node.")),(0,a.kt)("h2",{id:"setup-on-google-container-engine"},"Setup on Google Container Engine"),(0,a.kt)("p",null,"To get started, get source code of ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes"},(0,a.kt)("inlineCode",{parentName:"a"},"kubernetes"))," from github by git clone."),(0,a.kt)("p",null,"If you'd like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the ",(0,a.kt)("inlineCode",{parentName:"p"},"replicas")," parameter in the ",(0,a.kt)("inlineCode",{parentName:"p"},"spec")," section of the appropriate ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/deployment/"},(0,a.kt)("inlineCode",{parentName:"a"},"Deployment"))," or ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/"},(0,a.kt)("inlineCode",{parentName:"a"},"StatefulSet"))," resource."),(0,a.kt)("p",null,(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/kubernetes-engine"},"Google Container Engine")," (GKE) automates the creation and management of Kubernetes clusters in ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/"},"Google Compute Engine")," (GCE)."),(0,a.kt)("h3",{id:"prerequisites"},"Prerequisites"),(0,a.kt)("p",null,"To get started, you'll need:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"A Google Cloud Platform account, which you can sign up for at ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com"},"cloud.google.com")),(0,a.kt)("li",{parentName:"ul"},"An existing Cloud Platform project"),(0,a.kt)("li",{parentName:"ul"},"The ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com/sdk/downloads"},"Google Cloud SDK")," (in particular the ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com/sdk/gcloud/"},(0,a.kt)("inlineCode",{parentName:"a"},"gcloud"))," and ",(0,a.kt)("a",{parentName:"li",href:"https://kubernetes.io/docs/tasks/tools/"},(0,a.kt)("inlineCode",{parentName:"a"},"kubectl"))," tools).")),(0,a.kt)("h3",{id:"create-a-new-kubernetes-cluster"},"Create a new Kubernetes cluster"),(0,a.kt)("p",null,"You can create a new GKE cluster using the ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/sdk/gcloud/reference/container/clusters/create"},(0,a.kt)("inlineCode",{parentName:"a"},"container clusters create"))," command for ",(0,a.kt)("inlineCode",{parentName:"p"},"gcloud"),". This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more."),(0,a.kt)("p",null,"As an example, we'll create a new GKE cluster for Kubernetes version ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164"},"1.6.4")," in the ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/regions-zones/regions-zones#available"},"us-central1-a")," zone. The cluster will be named ",(0,a.kt)("inlineCode",{parentName:"p"},"bookkeeper-gke-cluster")," and will consist of three VMs, each using two locally attached SSDs and running on ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/machine-types"},"n1-standard-8")," machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud config set compute/zone us-central1-a\n$ gcloud config set project your-project-name\n$ gcloud container clusters create bookkeeper-gke-cluster \\\n  --machine-type=n1-standard-8 \\\n  --num-nodes=3 \\\n  --local-ssd-count=2 \\\n  --enable-kubernetes-alpha\n")),(0,a.kt)("p",null,"By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/overview/working-with-objects/labels"},"labels"),"."),(0,a.kt)("h3",{id:"dashboard"},"Dashboard"),(0,a.kt)("p",null,"You can observe your cluster in the ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/"},"Kubernetes Dashboard")," by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters get-credentials bookkeeper-gke-cluster \\\n  --zone=us-central1-a \\\n  --project=your-project-name\n$ kubectl proxy\n")),(0,a.kt)("p",null,"By default, the proxy will be opened on port 8001. Now you can navigate to ",(0,a.kt)("a",{parentName:"p",href:"http://localhost:8001/ui"},"localhost:8001/ui")," in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying."),(0,a.kt)("p",null,"When you create a cluster, your ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," config in ",(0,a.kt)("inlineCode",{parentName:"p"},"~/.kube/config")," (on MacOS and Linux) will be updated for you, so you probably won't need to change your configuration. Nonetheless, you can ensure that ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," can interact with your cluster by listing the nodes in the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get nodes\n")),(0,a.kt)("p",null,"If ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," is working with your cluster, you can proceed to deploy ZooKeeper and Bookies."),(0,a.kt)("h3",{id:"zookeeper"},"ZooKeeper"),(0,a.kt)("p",null,"You ",(0,a.kt)("em",{parentName:"p"},"must")," deploy ZooKeeper as the first component, as it is a dependency for the others."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl apply -f zookeeper.yaml\n")),(0,a.kt)("p",null,"Wait until all three ZooKeeper server pods are up and have the status ",(0,a.kt)("inlineCode",{parentName:"p"},"Running"),". You can check on the status of the ZooKeeper pods at any time:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods -l component=zookeeper\nNAME      READY     STATUS             RESTARTS   AGE\nzk-0      1/1       Running            0          18m\nzk-1      1/1       Running            0          17m\nzk-2      0/1       Running            6          15m\n")),(0,a.kt)("p",null,"This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs."),(0,a.kt)("p",null,"If you want to connect to one of the remote zookeeper server, you can use",(0,a.kt)("a",{parentName:"p",href:"https://github.com/rgs1/zk_shell"},"zk-shell"),", you need to forward a local port to the\nremote zookeeper server:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl port-forward zk-0 2181:2181\n$ zk-shell localhost 2181\n")),(0,a.kt)("h3",{id:"deploy-bookies"},"Deploy Bookies"),(0,a.kt)("p",null,"Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/"},"DaemonSet")," or a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/"},"StatefulSet"),"."),(0,a.kt)("blockquote",null,(0,a.kt)("p",{parentName:"blockquote"},"NOTE: ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," vs ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the\ncluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn't require any external storage for Persistent\nVolumes."),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods\nare not interchangeable, the idenifiers for each pod are maintained across any rescheduling."),(0,a.kt)("p",{parentName:"blockquote"},"Which one to use? A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," is the easiest way to deploy a bookkeeper cluster, because it doesn't require additional persistent volume provisioner and use local disks. BookKeeper manages\nthe data replication. It maintains the best latency property. However, it uses ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and ",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," for communications between pods. In some k8s platform (such as DC/OS), ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and\n",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," are not well supported. A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," is only practical when deploying in a cloud environment or any K8S installation that has persistent volumes available. Also be aware, latency\ncan be potentially higher when using persistent volumes, because there is usually built-in replication in the persistent volumes.")),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"# deploy bookies in a daemon set\n$ kubectl apply -f bookkeeper.yaml\n\n# deploy bookies in a stateful set\n$ kubectl apply -f bookkeeper.stateful.yaml\n")),(0,a.kt)("p",null,"You can check on the status of the Bookie pods for these components either in the Kubernetes Dashboard or using ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl"),":"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods\n")),(0,a.kt)("p",null,"While all BookKeeper pods is Running, by zk-shell you could find all available bookies under /ledgers/"),(0,a.kt)("p",null,"You could also run a ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/ivankelly/bookkeeper-tutorial/"},"bookkeeper tutorial")," instance, which named as 'dice' here, in this bookkeeper cluster."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},'$\ufeffkubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"\n')),(0,a.kt)("p",null,"An example output of Dice instance is like this:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-aidl"},'\u279c $ kubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"          \nIf you don\'t see a command prompt, try pressing enter.\nValue = 1, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 2, epoch = 5, leading\n')),(0,a.kt)("h3",{id:"un-deploy"},"Un-Deploy"),(0,a.kt)("p",null,"Delete Demo dice instance"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$\ufeffkubectl delete deployment dice      \n")),(0,a.kt)("p",null,"Delete BookKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f bookkeeper.yaml    \n")),(0,a.kt)("p",null,"Delete ZooKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f zookeeper.yaml    \n")),(0,a.kt)("p",null,"Delete cluster"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters delete bookkeeper-gke-cluster    \n")))}d.isMDXComponent=!0}}]);
\ No newline at end of file
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The managed clusters on Google Container Engine is the most convenient way.",source:"@site/versioned_docs/version-4.8.2/deployment/kubernetes.md",sourceDirName:"deployment",slug:"/deployment/kubernetes",permalink:"/docs/4.8.2/deployment/kubernetes",draft:!1,tags:[],version:"4.8.2",frontMatter:{id:"kubernetes",title:"Deploying Apache BookKeeper on Kubernetes"},sidebar:"version-4.8.2/docsSidebar",previous:{title:"Manual deployment",permalink:"/docs/4.8.2/deployment/manual"},next:{title:"BookKeeper administration",permalink:"/docs/4.8.2/admin/bookies"}},i={},p=[{value:"Setup on Google Container Engine",id:"setup-on-google-container-engine",level:2},{value:"Prerequisites",id:"prerequisites",level:3},{value:"Create a new Kubernetes cluster",id:"create-a-new-kubernetes-cluster",level:3},{value:"Dashboard",id:"dashboard",level:3},{value:"ZooKeeper",id:"zookeeper",level:3},{value:"Deploy Bookies",id:"deploy-bookies",level:3},{value:"Un-Deploy",id:"un-deploy",level:3}],u={toc:p},c="wrapper";function d(e){let{components:t,...n}=e;return(0,a.kt)(c,(0,o.Z)({},u,n,{components:t,mdxType:"MDXLayout"}),(0,a.kt)("p",null,"Apache BookKeeper can be easily deployed in ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/"},"Kubernetes")," clusters. The managed clusters on ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/"},"Google Container Engine")," is the most convenient way."),(0,a.kt)("p",null,"The deployment method shown in this guide relies on ",(0,a.kt)("a",{parentName:"p",href:"http://yaml.org/"},"YAML")," definitions for Kubernetes ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/resources-reference/v1.6/"},"resources"),". The ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes"},(0,a.kt)("inlineCode",{parentName:"a"},"kubernetes"))," subdirectory holds resource definitions for:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"A three-node ZooKeeper cluster"),(0,a.kt)("li",{parentName:"ul"},"A BookKeeper cluster with a bookie runs on each node.")),(0,a.kt)("h2",{id:"setup-on-google-container-engine"},"Setup on Google Container Engine"),(0,a.kt)("p",null,"To get started, get source code of ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes"},(0,a.kt)("inlineCode",{parentName:"a"},"kubernetes"))," from github by git clone."),(0,a.kt)("p",null,"If you'd like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the ",(0,a.kt)("inlineCode",{parentName:"p"},"replicas")," parameter in the ",(0,a.kt)("inlineCode",{parentName:"p"},"spec")," section of the appropriate ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/deployment/"},(0,a.kt)("inlineCode",{parentName:"a"},"Deployment"))," or ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/"},(0,a.kt)("inlineCode",{parentName:"a"},"StatefulSet"))," resource."),(0,a.kt)("p",null,(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/kubernetes-engine"},"Google Container Engine")," (GKE) automates the creation and management of Kubernetes clusters in ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/"},"Google Compute Engine")," (GCE)."),(0,a.kt)("h3",{id:"prerequisites"},"Prerequisites"),(0,a.kt)("p",null,"To get started, you'll need:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"A Google Cloud Platform account, which you can sign up for at ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com"},"cloud.google.com")),(0,a.kt)("li",{parentName:"ul"},"An existing Cloud Platform project"),(0,a.kt)("li",{parentName:"ul"},"The ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com/sdk/downloads"},"Google Cloud SDK")," (in particular the ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com/sdk/gcloud/"},(0,a.kt)("inlineCode",{parentName:"a"},"gcloud"))," and ",(0,a.kt)("a",{parentName:"li",href:"https://kubernetes.io/docs/tasks/tools/"},(0,a.kt)("inlineCode",{parentName:"a"},"kubectl"))," tools).")),(0,a.kt)("h3",{id:"create-a-new-kubernetes-cluster"},"Create a new Kubernetes cluster"),(0,a.kt)("p",null,"You can create a new GKE cluster using the ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/sdk/gcloud/reference/container/clusters/create"},(0,a.kt)("inlineCode",{parentName:"a"},"container clusters create"))," command for ",(0,a.kt)("inlineCode",{parentName:"p"},"gcloud"),". This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more."),(0,a.kt)("p",null,"As an example, we'll create a new GKE cluster for Kubernetes version ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164"},"1.6.4")," in the ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/regions-zones/regions-zones#available"},"us-central1-a")," zone. The cluster will be named ",(0,a.kt)("inlineCode",{parentName:"p"},"bookkeeper-gke-cluster")," and will consist of three VMs, each using two locally attached SSDs and running on ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/machine-types"},"n1-standard-8")," machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud config set compute/zone us-central1-a\n$ gcloud config set project your-project-name\n$ gcloud container clusters create bookkeeper-gke-cluster \\\n  --machine-type=n1-standard-8 \\\n  --num-nodes=3 \\\n  --local-ssd-count=2 \\\n  --enable-kubernetes-alpha\n")),(0,a.kt)("p",null,"By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/overview/working-with-objects/labels"},"labels"),"."),(0,a.kt)("h3",{id:"dashboard"},"Dashboard"),(0,a.kt)("p",null,"You can observe your cluster in the ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/"},"Kubernetes Dashboard")," by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters get-credentials bookkeeper-gke-cluster \\\n  --zone=us-central1-a \\\n  --project=your-project-name\n$ kubectl proxy\n")),(0,a.kt)("p",null,"By default, the proxy will be opened on port 8001. Now you can navigate to ",(0,a.kt)("a",{parentName:"p",href:"http://localhost:8001/ui"},"localhost:8001/ui")," in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying."),(0,a.kt)("p",null,"When you create a cluster, your ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," config in ",(0,a.kt)("inlineCode",{parentName:"p"},"~/.kube/config")," (on MacOS and Linux) will be updated for you, so you probably won't need to change your configuration. Nonetheless, you can ensure that ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," can interact with your cluster by listing the nodes in the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get nodes\n")),(0,a.kt)("p",null,"If ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," is working with your cluster, you can proceed to deploy ZooKeeper and Bookies."),(0,a.kt)("h3",{id:"zookeeper"},"ZooKeeper"),(0,a.kt)("p",null,"You ",(0,a.kt)("em",{parentName:"p"},"must")," deploy ZooKeeper as the first component, as it is a dependency for the others."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl apply -f zookeeper.yaml\n")),(0,a.kt)("p",null,"Wait until all three ZooKeeper server pods are up and have the status ",(0,a.kt)("inlineCode",{parentName:"p"},"Running"),". You can check on the status of the ZooKeeper pods at any time:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods -l component=zookeeper\nNAME      READY     STATUS             RESTARTS   AGE\nzk-0      1/1       Running            0          18m\nzk-1      1/1       Running            0          17m\nzk-2      0/1       Running            6          15m\n")),(0,a.kt)("p",null,"This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs."),(0,a.kt)("p",null,"If you want to connect to one of the remote zookeeper server, you can use",(0,a.kt)("a",{parentName:"p",href:"https://github.com/rgs1/zk_shell"},"zk-shell"),", you need to forward a local port to the\nremote zookeeper server:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl port-forward zk-0 2181:2181\n$ zk-shell localhost 2181\n")),(0,a.kt)("h3",{id:"deploy-bookies"},"Deploy Bookies"),(0,a.kt)("p",null,"Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/"},"DaemonSet")," or a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/"},"StatefulSet"),"."),(0,a.kt)("blockquote",null,(0,a.kt)("p",{parentName:"blockquote"},"NOTE: ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," vs ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the\ncluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn't require any external storage for Persistent\nVolumes."),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods\nare not interchangeable, the idenifiers for each pod are maintained across any rescheduling."),(0,a.kt)("p",{parentName:"blockquote"},"Which one to use? A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," is the easiest way to deploy a bookkeeper cluster, because it doesn't require additional persistent volume provisioner and use local disks. BookKeeper manages\nthe data replication. It maintains the best latency property. However, it uses ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and ",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," for communications between pods. In some k8s platform (such as DC/OS), ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and\n",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," are not well supported. A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," is only practical when deploying in a cloud environment or any K8S installation that has persistent volumes available. Also be aware, latency\ncan be potentially higher when using persistent volumes, because there is usually built-in replication in the persistent volumes.")),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"# deploy bookies in a daemon set\n$ kubectl apply -f bookkeeper.yaml\n\n# deploy bookies in a stateful set\n$ kubectl apply -f bookkeeper.stateful.yaml\n")),(0,a.kt)("p",null,"You can check on the status of the Bookie pods for these components either in the Kubernetes Dashboard or using ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl"),":"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods\n")),(0,a.kt)("p",null,"While all BookKeeper pods is Running, by zk-shell you could find all available bookies under /ledgers/"),(0,a.kt)("p",null,"You could also run a ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/ivankelly/bookkeeper-tutorial/"},"bookkeeper tutorial")," instance, which named as 'dice' here, in this bookkeeper cluster."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},'$\ufeffkubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"\n')),(0,a.kt)("p",null,"An example output of Dice instance is like this:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-aidl"},'\u279c $ kubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"          \nIf you don\'t see a command prompt, try pressing enter.\nValue = 1, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 2, epoch = 5, leading\n')),(0,a.kt)("h3",{id:"un-deploy"},"Un-Deploy"),(0,a.kt)("p",null,"Delete Demo dice instance"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$\ufeffkubectl delete deployment dice      \n")),(0,a.kt)("p",null,"Delete BookKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f bookkeeper.yaml    \n")),(0,a.kt)("p",null,"Delete ZooKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f zookeeper.yaml    \n")),(0,a.kt)("p",null,"Delete cluster"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters delete bookkeeper-gke-cluster    \n")))}d.isMDXComponent=!0}}]);
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The managed clusters on Google Container Engine is the most convenient way.",source:"@site/versioned_docs/version-4.12.1/deployment/kubernetes.md",sourceDirName:"deployment",slug:"/deployment/kubernetes",permalink:"/docs/4.12.1/deployment/kubernetes",draft:!1,tags:[],version:"4.12.1",frontMatter:{id:"kubernetes",title:"Deploying Apache BookKeeper on Kubernetes"},sidebar:"version-4.12.1/docsSidebar",previous:{title:"Manual deployment",permalink:"/docs/4.12.1/deployment/manual"},next:{title:"BookKeeper administration",permalink:"/docs/4.12.1/admin/bookies"}},i={},p=[{value:"Setup on Google Container Engine",id:"setup-on-google-container-engine",level:2},{value:"Prerequisites",id:"prerequisites",level:3},{value:"Create a new Kubernetes cluster",id:"create-a-new-kubernetes-cluster",level:3},{value:"Dashboard",id:"dashboard",level:3},{value:"ZooKeeper",id:"zookeeper",level:3},{value:"Deploy Bookies",id:"deploy-bookies",level:3},{value:"Un-Deploy",id:"un-deploy",level:3}],u={toc:p},c="wrapper";function d(e){let{components:t,...n}=e;return(0,a.kt)(c,(0,o.Z)({},u,n,{components:t,mdxType:"MDXLayout"}),(0,a.kt)("p",null,"Apache BookKeeper can be easily deployed in ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/"},"Kubernetes")," clusters. The managed clusters on ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/"},"Google Container Engine")," is the most convenient way."),(0,a.kt)("p",null,"The deployment method shown in this guide relies on ",(0,a.kt)("a",{parentName:"p",href:"http://yaml.org/"},"YAML")," definitions for Kubernetes ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/resources-reference/v1.6/"},"resources"),". The ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes"},(0,a.kt)("inlineCode",{parentName:"a"},"kubernetes"))," subdirectory holds resource definitions for:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"A three-node ZooKeeper cluster"),(0,a.kt)("li",{parentName:"ul"},"A BookKeeper cluster with a bookie runs on each node.")),(0,a.kt)("h2",{id:"setup-on-google-container-engine"},"Setup on Google Container Engine"),(0,a.kt)("p",null,"To get started, get source code of ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes"},(0,a.kt)("inlineCode",{parentName:"a"},"kubernetes"))," from github by git clone."),(0,a.kt)("p",null,"If you'd like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the ",(0,a.kt)("inlineCode",{parentName:"p"},"replicas")," parameter in the ",(0,a.kt)("inlineCode",{parentName:"p"},"spec")," section of the appropriate ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/deployment/"},(0,a.kt)("inlineCode",{parentName:"a"},"Deployment"))," or ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/"},(0,a.kt)("inlineCode",{parentName:"a"},"StatefulSet"))," resource."),(0,a.kt)("p",null,(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/kubernetes-engine"},"Google Container Engine")," (GKE) automates the creation and management of Kubernetes clusters in ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/"},"Google Compute Engine")," (GCE)."),(0,a.kt)("h3",{id:"prerequisites"},"Prerequisites"),(0,a.kt)("p",null,"To get started, you'll need:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"A Google Cloud Platform account, which you can sign up for at ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com"},"cloud.google.com")),(0,a.kt)("li",{parentName:"ul"},"An existing Cloud Platform project"),(0,a.kt)("li",{parentName:"ul"},"The ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com/sdk/downloads"},"Google Cloud SDK")," (in particular the ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com/sdk/gcloud/"},(0,a.kt)("inlineCode",{parentName:"a"},"gcloud"))," and ",(0,a.kt)("a",{parentName:"li",href:"https://kubernetes.io/docs/tasks/tools/"},(0,a.kt)("inlineCode",{parentName:"a"},"kubectl"))," tools).")),(0,a.kt)("h3",{id:"create-a-new-kubernetes-cluster"},"Create a new Kubernetes cluster"),(0,a.kt)("p",null,"You can create a new GKE cluster using the ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/sdk/gcloud/reference/container/clusters/create"},(0,a.kt)("inlineCode",{parentName:"a"},"container clusters create"))," command for ",(0,a.kt)("inlineCode",{parentName:"p"},"gcloud"),". This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more."),(0,a.kt)("p",null,"As an example, we'll create a new GKE cluster for Kubernetes version ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164"},"1.6.4")," in the ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/regions-zones/regions-zones#available"},"us-central1-a")," zone. The cluster will be named ",(0,a.kt)("inlineCode",{parentName:"p"},"bookkeeper-gke-cluster")," and will consist of three VMs, each using two locally attached SSDs and running on ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/machine-types"},"n1-standard-8")," machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud config set compute/zone us-central1-a\n$ gcloud config set project your-project-name\n$ gcloud container clusters create bookkeeper-gke-cluster \\\n  --machine-type=n1-standard-8 \\\n  --num-nodes=3 \\\n  --local-ssd-count=2 \\\n  --enable-kubernetes-alpha\n")),(0,a.kt)("p",null,"By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/overview/working-with-objects/labels"},"labels"),"."),(0,a.kt)("h3",{id:"dashboard"},"Dashboard"),(0,a.kt)("p",null,"You can observe your cluster in the ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/"},"Kubernetes Dashboard")," by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters get-credentials bookkeeper-gke-cluster \\\n  --zone=us-central1-a \\\n  --project=your-project-name\n$ kubectl proxy\n")),(0,a.kt)("p",null,"By default, the proxy will be opened on port 8001. Now you can navigate to ",(0,a.kt)("a",{parentName:"p",href:"http://localhost:8001/ui"},"localhost:8001/ui")," in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying."),(0,a.kt)("p",null,"When you create a cluster, your ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," config in ",(0,a.kt)("inlineCode",{parentName:"p"},"~/.kube/config")," (on MacOS and Linux) will be updated for you, so you probably won't need to change your configuration. Nonetheless, you can ensure that ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," can interact with your cluster by listing the nodes in the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get nodes\n")),(0,a.kt)("p",null,"If ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," is working with your cluster, you can proceed to deploy ZooKeeper and Bookies."),(0,a.kt)("h3",{id:"zookeeper"},"ZooKeeper"),(0,a.kt)("p",null,"You ",(0,a.kt)("em",{parentName:"p"},"must")," deploy ZooKeeper as the first component, as it is a dependency for the others."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl apply -f zookeeper.yaml\n")),(0,a.kt)("p",null,"Wait until all three ZooKeeper server pods are up and have the status ",(0,a.kt)("inlineCode",{parentName:"p"},"Running"),". You can check on the status of the ZooKeeper pods at any time:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods -l component=zookeeper\nNAME      READY     STATUS             RESTARTS   AGE\nzk-0      1/1       Running            0          18m\nzk-1      1/1       Running            0          17m\nzk-2      0/1       Running            6          15m\n")),(0,a.kt)("p",null,"This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs."),(0,a.kt)("p",null,"If you want to connect to one of the remote zookeeper server, you can use",(0,a.kt)("a",{parentName:"p",href:"https://github.com/rgs1/zk_shell"},"zk-shell"),", you need to forward a local port to the\nremote zookeeper server:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl port-forward zk-0 2181:2181\n$ zk-shell localhost 2181\n")),(0,a.kt)("h3",{id:"deploy-bookies"},"Deploy Bookies"),(0,a.kt)("p",null,"Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/"},"DaemonSet")," or a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/"},"StatefulSet"),"."),(0,a.kt)("blockquote",null,(0,a.kt)("p",{parentName:"blockquote"},"NOTE: ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," vs ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the\ncluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn't require any external storage for Persistent\nVolumes."),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods\nare not interchangeable, the idenifiers for each pod are maintained across any rescheduling."),(0,a.kt)("p",{parentName:"blockquote"},"Which one to use? A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," is the easiest way to deploy a bookkeeper cluster, because it doesn't require additional persistent volume provisioner and use local disks. BookKeeper manages\nthe data replication. It maintains the best latency property. However, it uses ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and ",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," for communications between pods. In some k8s platform (such as DC/OS), ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and\n",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," are not well supported. A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," is only practical when deploying in a cloud environment or any K8S installation that has persistent volumes available. Also be aware, latency\ncan be potentially higher when using persistent volumes, because there is usually built-in replication in the persistent volumes.")),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"# deploy bookies in a daemon set\n$ kubectl apply -f bookkeeper.yaml\n\n# deploy bookies in a stateful set\n$ kubectl apply -f bookkeeper.stateful.yaml\n")),(0,a.kt)("p",null,"You can check on the status of the Bookie pods for these components either in the Kubernetes Dashboard or using ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl"),":"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods\n")),(0,a.kt)("p",null,"While all BookKeeper pods is Running, by zk-shell you could find all available bookies under /ledgers/"),(0,a.kt)("p",null,"You could also run a ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/ivankelly/bookkeeper-tutorial/"},"bookkeeper tutorial")," instance, which named as 'dice' here, in this bookkeeper cluster."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},'$\ufeffkubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"\n')),(0,a.kt)("p",null,"An example output of Dice instance is like this:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-aidl"},'\u279c $ kubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"          \nIf you don\'t see a command prompt, try pressing enter.\nValue = 1, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 2, epoch = 5, leading\n')),(0,a.kt)("h3",{id:"un-deploy"},"Un-Deploy"),(0,a.kt)("p",null,"Delete Demo dice instance"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$\ufeffkubectl delete deployment dice      \n")),(0,a.kt)("p",null,"Delete BookKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f bookkeeper.yaml    \n")),(0,a.kt)("p",null,"Delete ZooKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f zookeeper.yaml    \n")),(0,a.kt)("p",null,"Delete cluster"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters delete bookkeeper-gke-cluster    \n")))}d.isMDXComponent=!0}}]);
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The managed clusters on ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/"},"Google Container Engine")," is the most convenient way."),(0,a.kt)("p",null,"The deployment method shown in this guide relies on ",(0,a.kt)("a",{parentName:"p",href:"http://yaml.org/"},"YAML")," definitions for Kubernetes ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/resources-reference/v1.6/"},"resources"),". The ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes"},(0,a.kt)("inlineCode",{parentName:"a"},"kubernetes"))," subdirectory holds resource definitions for:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"A three-node ZooKeeper cluster"),(0,a.kt)("li",{parentName:"ul"},"A BookKeeper cluster with a bookie runs on each node.")),(0,a.kt)("h2",{id:"setup-on-google-container-engine"},"Setup on Google Container Engine"),(0,a.kt)("p",null,"To get started, get source code of ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes"},(0,a.kt)("inlineCode",{parentName:"a"},"kubernetes"))," from github by git clone."),(0,a.kt)("p",null,"If you'd like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the ",(0,a.kt)("inlineCode",{parentName:"p"},"replicas")," parameter in the ",(0,a.kt)("inlineCode",{parentName:"p"},"spec")," section of the appropriate ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/deployment/"},(0,a.kt)("inlineCode",{parentName:"a"},"Deployment"))," or ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/"},(0,a.kt)("inlineCode",{parentName:"a"},"StatefulSet"))," resource."),(0,a.kt)("p",null,(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/kubernetes-engine"},"Google Container Engine")," (GKE) automates the creation and management of Kubernetes clusters in ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/"},"Google Compute Engine")," (GCE)."),(0,a.kt)("h3",{id:"prerequisites"},"Prerequisites"),(0,a.kt)("p",null,"To get started, you'll need:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"A Google Cloud Platform account, which you can sign up for at ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com"},"cloud.google.com")),(0,a.kt)("li",{parentName:"ul"},"An existing Cloud Platform project"),(0,a.kt)("li",{parentName:"ul"},"The ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com/sdk/downloads"},"Google Cloud SDK")," (in particular the ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com/sdk/gcloud/"},(0,a.kt)("inlineCode",{parentName:"a"},"gcloud"))," and ",(0,a.kt)("a",{parentName:"li",href:"https://kubernetes.io/docs/tasks/tools/"},(0,a.kt)("inlineCode",{parentName:"a"},"kubectl"))," tools).")),(0,a.kt)("h3",{id:"create-a-new-kubernetes-cluster"},"Create a new Kubernetes cluster"),(0,a.kt)("p",null,"You can create a new GKE cluster using the ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/sdk/gcloud/reference/container/clusters/create"},(0,a.kt)("inlineCode",{parentName:"a"},"container clusters create"))," command for ",(0,a.kt)("inlineCode",{parentName:"p"},"gcloud"),". This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more."),(0,a.kt)("p",null,"As an example, we'll create a new GKE cluster for Kubernetes version ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164"},"1.6.4")," in the ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/regions-zones/regions-zones#available"},"us-central1-a")," zone. The cluster will be named ",(0,a.kt)("inlineCode",{parentName:"p"},"bookkeeper-gke-cluster")," and will consist of three VMs, each using two locally attached SSDs and running on ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/machine-types"},"n1-standard-8")," machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud config set compute/zone us-central1-a\n$ gcloud config set project your-project-name\n$ gcloud container clusters create bookkeeper-gke-cluster \\\n  --machine-type=n1-standard-8 \\\n  --num-nodes=3 \\\n  --local-ssd-count=2 \\\n  --enable-kubernetes-alpha\n")),(0,a.kt)("p",null,"By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/overview/working-with-objects/labels"},"labels"),"."),(0,a.kt)("h3",{id:"dashboard"},"Dashboard"),(0,a.kt)("p",null,"You can observe your cluster in the ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/"},"Kubernetes Dashboard")," by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters get-credentials bookkeeper-gke-cluster \\\n  --zone=us-central1-a \\\n  --project=your-project-name\n$ kubectl proxy\n")),(0,a.kt)("p",null,"By default, the proxy will be opened on port 8001. Now you can navigate to ",(0,a.kt)("a",{parentName:"p",href:"http://localhost:8001/ui"},"localhost:8001/ui")," in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying."),(0,a.kt)("p",null,"When you create a cluster, your ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," config in ",(0,a.kt)("inlineCode",{parentName:"p"},"~/.kube/config")," (on MacOS and Linux) will be updated for you, so you probably won't need to change your configuration. Nonetheless, you can ensure that ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," can interact with your cluster by listing the nodes in the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get nodes\n")),(0,a.kt)("p",null,"If ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," is working with your cluster, you can proceed to deploy ZooKeeper and Bookies."),(0,a.kt)("h3",{id:"zookeeper"},"ZooKeeper"),(0,a.kt)("p",null,"You ",(0,a.kt)("em",{parentName:"p"},"must")," deploy ZooKeeper as the first component, as it is a dependency for the others."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl apply -f zookeeper.yaml\n")),(0,a.kt)("p",null,"Wait until all three ZooKeeper server pods are up and have the status ",(0,a.kt)("inlineCode",{parentName:"p"},"Running"),". You can check on the status of the ZooKeeper pods at any time:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods -l component=zookeeper\nNAME      READY     STATUS             RESTARTS   AGE\nzk-0      1/1       Running            0          18m\nzk-1      1/1       Running            0          17m\nzk-2      0/1       Running            6          15m\n")),(0,a.kt)("p",null,"This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs."),(0,a.kt)("p",null,"If you want to connect to one of the remote zookeeper server, you can use",(0,a.kt)("a",{parentName:"p",href:"https://github.com/rgs1/zk_shell"},"zk-shell"),", you need to forward a local port to the\nremote zookeeper server:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl port-forward zk-0 2181:2181\n$ zk-shell localhost 2181\n")),(0,a.kt)("h3",{id:"deploy-bookies"},"Deploy Bookies"),(0,a.kt)("p",null,"Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/"},"DaemonSet")," or a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/"},"StatefulSet"),"."),(0,a.kt)("blockquote",null,(0,a.kt)("p",{parentName:"blockquote"},"NOTE: ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," vs ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the\ncluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn't require any external storage for Persistent\nVolumes."),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods\nare not interchangeable, the idenifiers for each pod are maintained across any rescheduling."),(0,a.kt)("p",{parentName:"blockquote"},"Which one to use? A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," is the easiest way to deploy a bookkeeper cluster, because it doesn't require additional persistent volume provisioner and use local disks. BookKeeper manages\nthe data replication. It maintains the best latency property. However, it uses ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and ",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," for communications between pods. In some k8s platform (such as DC/OS), ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and\n",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," are not well supported. A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," is only practical when deploying in a cloud environment or any K8S installation that has persistent volumes available. Also be aware, latency\ncan be potentially higher when using persistent volumes, because there is usually built-in replication in the persistent volumes.")),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"# deploy bookies in a daemon set\n$ kubectl apply -f bookkeeper.yaml\n\n# deploy bookies in a stateful set\n$ kubectl apply -f bookkeeper.stateful.yaml\n")),(0,a.kt)("p",null,"You can check on the status of the Bookie pods for these components either in the Kubernetes Dashboard or using ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl"),":"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods\n")),(0,a.kt)("p",null,"While all BookKeeper pods is Running, by zk-shell you could find all available bookies under /ledgers/"),(0,a.kt)("p",null,"You could also run a ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/ivankelly/bookkeeper-tutorial/"},"bookkeeper tutorial")," instance, which named as 'dice' here, in this bookkeeper cluster."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},'$\ufeffkubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"\n')),(0,a.kt)("p",null,"An example output of Dice instance is like this:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-aidl"},'\u279c $ kubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"          \nIf you don\'t see a command prompt, try pressing enter.\nValue = 1, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 2, epoch = 5, leading\n')),(0,a.kt)("h3",{id:"un-deploy"},"Un-Deploy"),(0,a.kt)("p",null,"Delete Demo dice instance"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$\ufeffkubectl delete deployment dice      \n")),(0,a.kt)("p",null,"Delete BookKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f bookkeeper.yaml    \n")),(0,a.kt)("p",null,"Delete ZooKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f zookeeper.yaml    \n")),(0,a.kt)("p",null,"Delete cluster"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters delete bookkeeper-gke-cluster    \n")))}d.isMDXComponent=!0}}]);
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The managed clusters on Google Container Engine is the most convenient way.",source:"@site/versioned_docs/version-4.9.2/deployment/kubernetes.md",sourceDirName:"deployment",slug:"/deployment/kubernetes",permalink:"/docs/4.9.2/deployment/kubernetes",draft:!1,tags:[],version:"4.9.2",frontMatter:{id:"kubernetes",title:"Deploying Apache BookKeeper on Kubernetes"},sidebar:"version-4.9.2/docsSidebar",previous:{title:"Manual deployment",permalink:"/docs/4.9.2/deployment/manual"},next:{title:"BookKeeper administration",permalink:"/docs/4.9.2/admin/bookies"}},i={},p=[{value:"Setup on Google Container Engine",id:"setup-on-google-container-engine",level:2},{value:"Prerequisites",id:"prerequisites",level:3},{value:"Create a new Kubernetes cluster",id:"create-a-new-kubernetes-cluster",level:3},{value:"Dashboard",id:"dashboard",level:3},{value:"ZooKeeper",id:"zookeeper",level:3},{value:"Deploy Bookies",id:"deploy-bookies",level:3},{value:"Un-Deploy",id:"un-deploy",level:3}],u={toc:p},c="wrapper";function d(e){let{components:t,...n}=e;return(0,a.kt)(c,(0,o.Z)({},u,n,{components:t,mdxType:"MDXLayout"}),(0,a.kt)("p",null,"Apache BookKeeper can be easily deployed in ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/"},"Kubernetes")," clusters. 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This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more."),(0,a.kt)("p",null,"As an example, we'll create a new GKE cluster for Kubernetes version ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164"},"1.6.4")," in the ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/regions-zones/regions-zones#available"},"us-central1-a")," zone. The cluster will be named ",(0,a.kt)("inlineCode",{parentName:"p"},"bookkeeper-gke-cluster")," and will consist of three VMs, each using two locally attached SSDs and running on ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/machine-types"},"n1-standard-8")," machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud config set compute/zone us-central1-a\n$ gcloud config set project your-project-name\n$ gcloud container clusters create bookkeeper-gke-cluster \\\n  --machine-type=n1-standard-8 \\\n  --num-nodes=3 \\\n  --local-ssd-count=2 \\\n  --enable-kubernetes-alpha\n")),(0,a.kt)("p",null,"By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/overview/working-with-objects/labels"},"labels"),"."),(0,a.kt)("h3",{id:"dashboard"},"Dashboard"),(0,a.kt)("p",null,"You can observe your cluster in the ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/"},"Kubernetes Dashboard")," by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters get-credentials bookkeeper-gke-cluster \\\n  --zone=us-central1-a \\\n  --project=your-project-name\n$ kubectl proxy\n")),(0,a.kt)("p",null,"By default, the proxy will be opened on port 8001. Now you can navigate to ",(0,a.kt)("a",{parentName:"p",href:"http://localhost:8001/ui"},"localhost:8001/ui")," in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying."),(0,a.kt)("p",null,"When you create a cluster, your ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," config in ",(0,a.kt)("inlineCode",{parentName:"p"},"~/.kube/config")," (on MacOS and Linux) will be updated for you, so you probably won't need to change your configuration. Nonetheless, you can ensure that ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," can interact with your cluster by listing the nodes in the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get nodes\n")),(0,a.kt)("p",null,"If ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," is working with your cluster, you can proceed to deploy ZooKeeper and Bookies."),(0,a.kt)("h3",{id:"zookeeper"},"ZooKeeper"),(0,a.kt)("p",null,"You ",(0,a.kt)("em",{parentName:"p"},"must")," deploy ZooKeeper as the first component, as it is a dependency for the others."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl apply -f zookeeper.yaml\n")),(0,a.kt)("p",null,"Wait until all three ZooKeeper server pods are up and have the status ",(0,a.kt)("inlineCode",{parentName:"p"},"Running"),". You can check on the status of the ZooKeeper pods at any time:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods -l component=zookeeper\nNAME      READY     STATUS             RESTARTS   AGE\nzk-0      1/1       Running            0          18m\nzk-1      1/1       Running            0          17m\nzk-2      0/1       Running            6          15m\n")),(0,a.kt)("p",null,"This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs."),(0,a.kt)("p",null,"If you want to connect to one of the remote zookeeper server, you can use",(0,a.kt)("a",{parentName:"p",href:"https://github.com/rgs1/zk_shell"},"zk-shell"),", you need to forward a local port to the\nremote zookeeper server:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl port-forward zk-0 2181:2181\n$ zk-shell localhost 2181\n")),(0,a.kt)("h3",{id:"deploy-bookies"},"Deploy Bookies"),(0,a.kt)("p",null,"Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/"},"DaemonSet")," or a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/"},"StatefulSet"),"."),(0,a.kt)("blockquote",null,(0,a.kt)("p",{parentName:"blockquote"},"NOTE: ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," vs ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the\ncluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn't require any external storage for Persistent\nVolumes."),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods\nare not interchangeable, the idenifiers for each pod are maintained across any rescheduling."),(0,a.kt)("p",{parentName:"blockquote"},"Which one to use? A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," is the easiest way to deploy a bookkeeper cluster, because it doesn't require additional persistent volume provisioner and use local disks. BookKeeper manages\nthe data replication. It maintains the best latency property. However, it uses ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and ",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," for communications between pods. In some k8s platform (such as DC/OS), ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and\n",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," are not well supported. A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," is only practical when deploying in a cloud environment or any K8S installation that has persistent volumes available. Also be aware, latency\ncan be potentially higher when using persistent volumes, because there is usually built-in replication in the persistent volumes.")),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"# deploy bookies in a daemon set\n$ kubectl apply -f bookkeeper.yaml\n\n# deploy bookies in a stateful set\n$ kubectl apply -f bookkeeper.stateful.yaml\n")),(0,a.kt)("p",null,"You can check on the status of the Bookie pods for these components either in the Kubernetes Dashboard or using ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl"),":"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods\n")),(0,a.kt)("p",null,"While all BookKeeper pods is Running, by zk-shell you could find all available bookies under /ledgers/"),(0,a.kt)("p",null,"You could also run a ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/ivankelly/bookkeeper-tutorial/"},"bookkeeper tutorial")," instance, which named as 'dice' here, in this bookkeeper cluster."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},'$\ufeffkubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"\n')),(0,a.kt)("p",null,"An example output of Dice instance is like this:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-aidl"},'\u279c $ kubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"          \nIf you don\'t see a command prompt, try pressing enter.\nValue = 1, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 2, epoch = 5, leading\n')),(0,a.kt)("h3",{id:"un-deploy"},"Un-Deploy"),(0,a.kt)("p",null,"Delete Demo dice instance"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$\ufeffkubectl delete deployment dice      \n")),(0,a.kt)("p",null,"Delete BookKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f bookkeeper.yaml    \n")),(0,a.kt)("p",null,"Delete ZooKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f zookeeper.yaml    \n")),(0,a.kt)("p",null,"Delete cluster"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters delete bookkeeper-gke-cluster    \n")))}d.isMDXComponent=!0}}]);
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The managed clusters on ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/"},"Google Container Engine")," is the most convenient way."),(0,a.kt)("p",null,"The deployment method shown in this guide relies on ",(0,a.kt)("a",{parentName:"p",href:"http://yaml.org/"},"YAML")," definitions for Kubernetes ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/resources-reference/v1.6/"},"resources"),". The ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes"},(0,a.kt)("inlineCode",{parentName:"a"},"kubernetes"))," subdirectory holds resource definitions for:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"A three-node ZooKeeper cluster"),(0,a.kt)("li",{parentName:"ul"},"A BookKeeper cluster with a bookie runs on each node.")),(0,a.kt)("h2",{id:"setup-on-google-container-engine"},"Setup on Google Container Engine"),(0,a.kt)("p",null,"To get started, get source code of ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes"},(0,a.kt)("inlineCode",{parentName:"a"},"kubernetes"))," from github by git clone."),(0,a.kt)("p",null,"If you'd like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the ",(0,a.kt)("inlineCode",{parentName:"p"},"replicas")," parameter in the ",(0,a.kt)("inlineCode",{parentName:"p"},"spec")," section of the appropriate ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/deployment/"},(0,a.kt)("inlineCode",{parentName:"a"},"Deployment"))," or ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/"},(0,a.kt)("inlineCode",{parentName:"a"},"StatefulSet"))," resource."),(0,a.kt)("p",null,(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/kubernetes-engine"},"Google Container Engine")," (GKE) automates the creation and management of Kubernetes clusters in ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/"},"Google Compute Engine")," (GCE)."),(0,a.kt)("h3",{id:"prerequisites"},"Prerequisites"),(0,a.kt)("p",null,"To get started, you'll need:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"A Google Cloud Platform account, which you can sign up for at ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com"},"cloud.google.com")),(0,a.kt)("li",{parentName:"ul"},"An existing Cloud Platform project"),(0,a.kt)("li",{parentName:"ul"},"The ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com/sdk/downloads"},"Google Cloud SDK")," (in particular the ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com/sdk/gcloud/"},(0,a.kt)("inlineCode",{parentName:"a"},"gcloud"))," and ",(0,a.kt)("a",{parentName:"li",href:"https://kubernetes.io/docs/tasks/tools/"},(0,a.kt)("inlineCode",{parentName:"a"},"kubectl"))," tools).")),(0,a.kt)("h3",{id:"create-a-new-kubernetes-cluster"},"Create a new Kubernetes cluster"),(0,a.kt)("p",null,"You can create a new GKE cluster using the ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/sdk/gcloud/reference/container/clusters/create"},(0,a.kt)("inlineCode",{parentName:"a"},"container clusters create"))," command for ",(0,a.kt)("inlineCode",{parentName:"p"},"gcloud"),". This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more."),(0,a.kt)("p",null,"As an example, we'll create a new GKE cluster for Kubernetes version ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164"},"1.6.4")," in the ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/regions-zones/regions-zones#available"},"us-central1-a")," zone. The cluster will be named ",(0,a.kt)("inlineCode",{parentName:"p"},"bookkeeper-gke-cluster")," and will consist of three VMs, each using two locally attached SSDs and running on ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/machine-types"},"n1-standard-8")," machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud config set compute/zone us-central1-a\n$ gcloud config set project your-project-name\n$ gcloud container clusters create bookkeeper-gke-cluster \\\n  --machine-type=n1-standard-8 \\\n  --num-nodes=3 \\\n  --local-ssd-count=2 \\\n  --enable-kubernetes-alpha\n")),(0,a.kt)("p",null,"By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/overview/working-with-objects/labels"},"labels"),"."),(0,a.kt)("h3",{id:"dashboard"},"Dashboard"),(0,a.kt)("p",null,"You can observe your cluster in the ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/"},"Kubernetes Dashboard")," by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters get-credentials bookkeeper-gke-cluster \\\n  --zone=us-central1-a \\\n  --project=your-project-name\n$ kubectl proxy\n")),(0,a.kt)("p",null,"By default, the proxy will be opened on port 8001. Now you can navigate to ",(0,a.kt)("a",{parentName:"p",href:"http://localhost:8001/ui"},"localhost:8001/ui")," in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying."),(0,a.kt)("p",null,"When you create a cluster, your ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," config in ",(0,a.kt)("inlineCode",{parentName:"p"},"~/.kube/config")," (on MacOS and Linux) will be updated for you, so you probably won't need to change your configuration. Nonetheless, you can ensure that ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," can interact with your cluster by listing the nodes in the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get nodes\n")),(0,a.kt)("p",null,"If ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," is working with your cluster, you can proceed to deploy ZooKeeper and Bookies."),(0,a.kt)("h3",{id:"zookeeper"},"ZooKeeper"),(0,a.kt)("p",null,"You ",(0,a.kt)("em",{parentName:"p"},"must")," deploy ZooKeeper as the first component, as it is a dependency for the others."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl apply -f zookeeper.yaml\n")),(0,a.kt)("p",null,"Wait until all three ZooKeeper server pods are up and have the status ",(0,a.kt)("inlineCode",{parentName:"p"},"Running"),". You can check on the status of the ZooKeeper pods at any time:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods -l component=zookeeper\nNAME      READY     STATUS             RESTARTS   AGE\nzk-0      1/1       Running            0          18m\nzk-1      1/1       Running            0          17m\nzk-2      0/1       Running            6          15m\n")),(0,a.kt)("p",null,"This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs."),(0,a.kt)("p",null,"If you want to connect to one of the remote zookeeper server, you can use",(0,a.kt)("a",{parentName:"p",href:"https://github.com/rgs1/zk_shell"},"zk-shell"),", you need to forward a local port to the\nremote zookeeper server:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl port-forward zk-0 2181:2181\n$ zk-shell localhost 2181\n")),(0,a.kt)("h3",{id:"deploy-bookies"},"Deploy Bookies"),(0,a.kt)("p",null,"Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/"},"DaemonSet")," or a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/"},"StatefulSet"),"."),(0,a.kt)("blockquote",null,(0,a.kt)("p",{parentName:"blockquote"},"NOTE: ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," vs ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the\ncluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn't require any external storage for Persistent\nVolumes."),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods\nare not interchangeable, the idenifiers for each pod are maintained across any rescheduling."),(0,a.kt)("p",{parentName:"blockquote"},"Which one to use? A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," is the easiest way to deploy a bookkeeper cluster, because it doesn't require additional persistent volume provisioner and use local disks. BookKeeper manages\nthe data replication. It maintains the best latency property. However, it uses ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and ",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," for communications between pods. In some k8s platform (such as DC/OS), ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and\n",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," are not well supported. A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," is only practical when deploying in a cloud environment or any K8S installation that has persistent volumes available. Also be aware, latency\ncan be potentially higher when using persistent volumes, because there is usually built-in replication in the persistent volumes.")),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"# deploy bookies in a daemon set\n$ kubectl apply -f bookkeeper.yaml\n\n# deploy bookies in a stateful set\n$ kubectl apply -f bookkeeper.stateful.yaml\n")),(0,a.kt)("p",null,"You can check on the status of the Bookie pods for these components either in the Kubernetes Dashboard or using ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl"),":"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods\n")),(0,a.kt)("p",null,"While all BookKeeper pods is Running, by zk-shell you could find all available bookies under /ledgers/"),(0,a.kt)("p",null,"You could also run a ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/ivankelly/bookkeeper-tutorial/"},"bookkeeper tutorial")," instance, which named as 'dice' here, in this bookkeeper cluster."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},'$\ufeffkubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"\n')),(0,a.kt)("p",null,"An example output of Dice instance is like this:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-aidl"},'\u279c $ kubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"          \nIf you don\'t see a command prompt, try pressing enter.\nValue = 1, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 2, epoch = 5, leading\n')),(0,a.kt)("h3",{id:"un-deploy"},"Un-Deploy"),(0,a.kt)("p",null,"Delete Demo dice instance"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$\ufeffkubectl delete deployment dice      \n")),(0,a.kt)("p",null,"Delete BookKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f bookkeeper.yaml    \n")),(0,a.kt)("p",null,"Delete ZooKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f zookeeper.yaml    \n")),(0,a.kt)("p",null,"Delete cluster"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters delete bookkeeper-gke-cluster    \n")))}d.isMDXComponent=!0}}]);
\ No newline at end of file
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The managed clusters on Google Container Engine is the most convenient way.",source:"@site/versioned_docs/version-4.17.0/deployment/kubernetes.md",sourceDirName:"deployment",slug:"/deployment/kubernetes",permalink:"/docs/deployment/kubernetes",draft:!1,tags:[],version:"4.17.0",frontMatter:{id:"kubernetes",title:"Deploying Apache BookKeeper on Kubernetes"},sidebar:"docsSidebar",previous:{title:"Manual deployment",permalink:"/docs/deployment/manual"},next:{title:"BookKeeper administration",permalink:"/docs/admin/bookies"}},p={},i=[{value:"Setup on Google Container Engine",id:"setup-on-google-container-engine",level:2},{value:"Prerequisites",id:"prerequisites",level:3},{value:"Create a new Kubernetes cluster",id:"create-a-new-kubernetes-cluster",level:3},{value:"Dashboard",id:"dashboard",level:3},{value:"ZooKeeper",id:"zookeeper",level:3},{value:"Deploy Bookies",id:"deploy-bookies",level:3},{value:"Un-Deploy",id:"un-deploy",level:3}],u={toc:i},c="wrapper";function d(e){let{components:t,...n}=e;return(0,a.kt)(c,(0,o.Z)({},u,n,{components:t,mdxType:"MDXLayout"}),(0,a.kt)("p",null,"Apache BookKeeper can be easily deployed in ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/"},"Kubernetes")," clusters. The managed clusters on ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/"},"Google Container Engine")," is the most convenient way."),(0,a.kt)("p",null,"The deployment method shown in this guide relies on ",(0,a.kt)("a",{parentName:"p",href:"http://yaml.org/"},"YAML")," definitions for Kubernetes ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/resources-reference/v1.6/"},"resources"),". The ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes"},(0,a.kt)("inlineCode",{parentName:"a"},"kubernetes"))," subdirectory holds resource definitions for:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"A three-node ZooKeeper cluster"),(0,a.kt)("li",{parentName:"ul"},"A BookKeeper cluster with a bookie runs on each node.")),(0,a.kt)("h2",{id:"setup-on-google-container-engine"},"Setup on Google Container Engine"),(0,a.kt)("p",null,"To get started, get source code of ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes"},(0,a.kt)("inlineCode",{parentName:"a"},"kubernetes"))," from github by git clone."),(0,a.kt)("p",null,"If you'd like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the ",(0,a.kt)("inlineCode",{parentName:"p"},"replicas")," parameter in the ",(0,a.kt)("inlineCode",{parentName:"p"},"spec")," section of the appropriate ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/deployment/"},(0,a.kt)("inlineCode",{parentName:"a"},"Deployment"))," or ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/"},(0,a.kt)("inlineCode",{parentName:"a"},"StatefulSet"))," resource."),(0,a.kt)("p",null,(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/kubernetes-engine"},"Google Container Engine")," (GKE) automates the creation and management of Kubernetes clusters in ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/"},"Google Compute Engine")," (GCE)."),(0,a.kt)("h3",{id:"prerequisites"},"Prerequisites"),(0,a.kt)("p",null,"To get started, you'll need:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"A Google Cloud Platform account, which you can sign up for at ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com"},"cloud.google.com")),(0,a.kt)("li",{parentName:"ul"},"An existing Cloud Platform project"),(0,a.kt)("li",{parentName:"ul"},"The ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com/sdk/downloads"},"Google Cloud SDK")," (in particular the ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com/sdk/gcloud/"},(0,a.kt)("inlineCode",{parentName:"a"},"gcloud"))," and ",(0,a.kt)("a",{parentName:"li",href:"https://kubernetes.io/docs/tasks/tools/"},(0,a.kt)("inlineCode",{parentName:"a"},"kubectl"))," tools).")),(0,a.kt)("h3",{id:"create-a-new-kubernetes-cluster"},"Create a new Kubernetes cluster"),(0,a.kt)("p",null,"You can create a new GKE cluster using the ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/sdk/gcloud/reference/container/clusters/create"},(0,a.kt)("inlineCode",{parentName:"a"},"container clusters create"))," command for ",(0,a.kt)("inlineCode",{parentName:"p"},"gcloud"),". This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more."),(0,a.kt)("p",null,"As an example, we'll create a new GKE cluster for Kubernetes version ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164"},"1.6.4")," in the ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/regions-zones/regions-zones#available"},"us-central1-a")," zone. The cluster will be named ",(0,a.kt)("inlineCode",{parentName:"p"},"bookkeeper-gke-cluster")," and will consist of three VMs, each using two locally attached SSDs and running on ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/machine-types"},"n1-standard-8")," machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud config set compute/zone us-central1-a\n$ gcloud config set project your-project-name\n$ gcloud container clusters create bookkeeper-gke-cluster \\\n  --machine-type=n1-standard-8 \\\n  --num-nodes=3 \\\n  --local-ssd-count=2 \\\n  --enable-kubernetes-alpha\n")),(0,a.kt)("p",null,"By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/overview/working-with-objects/labels"},"labels"),"."),(0,a.kt)("h3",{id:"dashboard"},"Dashboard"),(0,a.kt)("p",null,"You can observe your cluster in the ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/"},"Kubernetes Dashboard")," by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters get-credentials bookkeeper-gke-cluster \\\n  --zone=us-central1-a \\\n  --project=your-project-name\n$ kubectl proxy\n")),(0,a.kt)("p",null,"By default, the proxy will be opened on port 8001. Now you can navigate to ",(0,a.kt)("a",{parentName:"p",href:"http://localhost:8001/ui"},"localhost:8001/ui")," in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying."),(0,a.kt)("p",null,"When you create a cluster, your ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," config in ",(0,a.kt)("inlineCode",{parentName:"p"},"~/.kube/config")," (on MacOS and Linux) will be updated for you, so you probably won't need to change your configuration. Nonetheless, you can ensure that ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," can interact with your cluster by listing the nodes in the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get nodes\n")),(0,a.kt)("p",null,"If ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," is working with your cluster, you can proceed to deploy ZooKeeper and Bookies."),(0,a.kt)("h3",{id:"zookeeper"},"ZooKeeper"),(0,a.kt)("p",null,"You ",(0,a.kt)("em",{parentName:"p"},"must")," deploy ZooKeeper as the first component, as it is a dependency for the others."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl apply -f zookeeper.yaml\n")),(0,a.kt)("p",null,"Wait until all three ZooKeeper server pods are up and have the status ",(0,a.kt)("inlineCode",{parentName:"p"},"Running"),". You can check on the status of the ZooKeeper pods at any time:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods -l component=zookeeper\nNAME      READY     STATUS             RESTARTS   AGE\nzk-0      1/1       Running            0          18m\nzk-1      1/1       Running            0          17m\nzk-2      0/1       Running            6          15m\n")),(0,a.kt)("p",null,"This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs."),(0,a.kt)("p",null,"If you want to connect to one of the remote zookeeper server, you can use",(0,a.kt)("a",{parentName:"p",href:"https://github.com/rgs1/zk_shell"},"zk-shell"),", you need to forward a local port to the\nremote zookeeper server:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl port-forward zk-0 2181:2181\n$ zk-shell localhost 2181\n")),(0,a.kt)("h3",{id:"deploy-bookies"},"Deploy Bookies"),(0,a.kt)("p",null,"Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/"},"DaemonSet")," or a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/"},"StatefulSet"),"."),(0,a.kt)("blockquote",null,(0,a.kt)("p",{parentName:"blockquote"},"NOTE: ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," vs ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the\ncluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn't require any external storage for Persistent\nVolumes."),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods\nare not interchangeable, the idenifiers for each pod are maintained across any rescheduling."),(0,a.kt)("p",{parentName:"blockquote"},"Which one to use? A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," is the easiest way to deploy a bookkeeper cluster, because it doesn't require additional persistent volume provisioner and use local disks. BookKeeper manages\nthe data replication. It maintains the best latency property. However, it uses ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and ",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," for communications between pods. In some k8s platform (such as DC/OS), ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and\n",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," are not well supported. A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," is only practical when deploying in a cloud environment or any K8S installation that has persistent volumes available. Also be aware, latency\ncan be potentially higher when using persistent volumes, because there is usually built-in replication in the persistent volumes.")),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"# deploy bookies in a daemon set\n$ kubectl apply -f bookkeeper.yaml\n\n# deploy bookies in a stateful set\n$ kubectl apply -f bookkeeper.stateful.yaml\n")),(0,a.kt)("p",null,"You can check on the status of the Bookie pods for these components either in the Kubernetes Dashboard or using ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl"),":"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods\n")),(0,a.kt)("p",null,"While all BookKeeper pods is Running, by zk-shell you could find all available bookies under /ledgers/"),(0,a.kt)("p",null,"You could also run a ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/ivankelly/bookkeeper-tutorial/"},"bookkeeper tutorial")," instance, which named as 'dice' here, in this bookkeeper cluster."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},'$\ufeffkubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"\n')),(0,a.kt)("p",null,"An example output of Dice instance is like this:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-aidl"},'\u279c $ kubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"          \nIf you don\'t see a command prompt, try pressing enter.\nValue = 1, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 2, epoch = 5, leading\n')),(0,a.kt)("h3",{id:"un-deploy"},"Un-Deploy"),(0,a.kt)("p",null,"Delete Demo dice instance"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$\ufeffkubectl delete deployment dice      \n")),(0,a.kt)("p",null,"Delete BookKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f bookkeeper.yaml    \n")),(0,a.kt)("p",null,"Delete ZooKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f zookeeper.yaml    \n")),(0,a.kt)("p",null,"Delete cluster"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters delete bookkeeper-gke-cluster    \n")))}d.isMDXComponent=!0}}]);
\ No newline at end of file
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The managed clusters on Google Container Engine is the most convenient way.",source:"@site/versioned_docs/version-4.10.0/deployment/kubernetes.md",sourceDirName:"deployment",slug:"/deployment/kubernetes",permalink:"/docs/4.10.0/deployment/kubernetes",draft:!1,tags:[],version:"4.10.0",frontMatter:{id:"kubernetes",title:"Deploying Apache BookKeeper on Kubernetes"},sidebar:"version-4.10.0/docsSidebar",previous:{title:"Manual deployment",permalink:"/docs/4.10.0/deployment/manual"},next:{title:"BookKeeper administration",permalink:"/docs/4.10.0/admin/bookies"}},i={},p=[{value:"Setup on Google Container Engine",id:"setup-on-google-container-engine",level:2},{value:"Prerequisites",id:"prerequisites",level:3},{value:"Create a new Kubernetes cluster",id:"create-a-new-kubernetes-cluster",level:3},{value:"Dashboard",id:"dashboard",level:3},{value:"ZooKeeper",id:"zookeeper",level:3},{value:"Deploy Bookies",id:"deploy-bookies",level:3},{value:"Un-Deploy",id:"un-deploy",level:3}],u={toc:p},c="wrapper";function d(e){let{components:t,...n}=e;return(0,a.kt)(c,(0,o.Z)({},u,n,{components:t,mdxType:"MDXLayout"}),(0,a.kt)("p",null,"Apache BookKeeper can be easily deployed in ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/"},"Kubernetes")," clusters. The managed clusters on ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/"},"Google Container Engine")," is the most convenient way."),(0,a.kt)("p",null,"The deployment method shown in this guide relies on ",(0,a.kt)("a",{parentName:"p",href:"http://yaml.org/"},"YAML")," definitions for Kubernetes ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/resources-reference/v1.6/"},"resources"),". The ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes"},(0,a.kt)("inlineCode",{parentName:"a"},"kubernetes"))," subdirectory holds resource definitions for:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"A three-node ZooKeeper cluster"),(0,a.kt)("li",{parentName:"ul"},"A BookKeeper cluster with a bookie runs on each node.")),(0,a.kt)("h2",{id:"setup-on-google-container-engine"},"Setup on Google Container Engine"),(0,a.kt)("p",null,"To get started, get source code of ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes"},(0,a.kt)("inlineCode",{parentName:"a"},"kubernetes"))," from github by git clone."),(0,a.kt)("p",null,"If you'd like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the ",(0,a.kt)("inlineCode",{parentName:"p"},"replicas")," parameter in the ",(0,a.kt)("inlineCode",{parentName:"p"},"spec")," section of the appropriate ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/deployment/"},(0,a.kt)("inlineCode",{parentName:"a"},"Deployment"))," or ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/"},(0,a.kt)("inlineCode",{parentName:"a"},"StatefulSet"))," resource."),(0,a.kt)("p",null,(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/kubernetes-engine"},"Google Container Engine")," (GKE) automates the creation and management of Kubernetes clusters in ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/"},"Google Compute Engine")," (GCE)."),(0,a.kt)("h3",{id:"prerequisites"},"Prerequisites"),(0,a.kt)("p",null,"To get started, you'll need:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"A Google Cloud Platform account, which you can sign up for at ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com"},"cloud.google.com")),(0,a.kt)("li",{parentName:"ul"},"An existing Cloud Platform project"),(0,a.kt)("li",{parentName:"ul"},"The ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com/sdk/downloads"},"Google Cloud SDK")," (in particular the ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com/sdk/gcloud/"},(0,a.kt)("inlineCode",{parentName:"a"},"gcloud"))," and ",(0,a.kt)("a",{parentName:"li",href:"https://kubernetes.io/docs/tasks/tools/"},(0,a.kt)("inlineCode",{parentName:"a"},"kubectl"))," tools).")),(0,a.kt)("h3",{id:"create-a-new-kubernetes-cluster"},"Create a new Kubernetes cluster"),(0,a.kt)("p",null,"You can create a new GKE cluster using the ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/sdk/gcloud/reference/container/clusters/create"},(0,a.kt)("inlineCode",{parentName:"a"},"container clusters create"))," command for ",(0,a.kt)("inlineCode",{parentName:"p"},"gcloud"),". This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more."),(0,a.kt)("p",null,"As an example, we'll create a new GKE cluster for Kubernetes version ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164"},"1.6.4")," in the ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/regions-zones/regions-zones#available"},"us-central1-a")," zone. The cluster will be named ",(0,a.kt)("inlineCode",{parentName:"p"},"bookkeeper-gke-cluster")," and will consist of three VMs, each using two locally attached SSDs and running on ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/machine-types"},"n1-standard-8")," machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud config set compute/zone us-central1-a\n$ gcloud config set project your-project-name\n$ gcloud container clusters create bookkeeper-gke-cluster \\\n  --machine-type=n1-standard-8 \\\n  --num-nodes=3 \\\n  --local-ssd-count=2 \\\n  --enable-kubernetes-alpha\n")),(0,a.kt)("p",null,"By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/overview/working-with-objects/labels"},"labels"),"."),(0,a.kt)("h3",{id:"dashboard"},"Dashboard"),(0,a.kt)("p",null,"You can observe your cluster in the ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/"},"Kubernetes Dashboard")," by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters get-credentials bookkeeper-gke-cluster \\\n  --zone=us-central1-a \\\n  --project=your-project-name\n$ kubectl proxy\n")),(0,a.kt)("p",null,"By default, the proxy will be opened on port 8001. Now you can navigate to ",(0,a.kt)("a",{parentName:"p",href:"http://localhost:8001/ui"},"localhost:8001/ui")," in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying."),(0,a.kt)("p",null,"When you create a cluster, your ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," config in ",(0,a.kt)("inlineCode",{parentName:"p"},"~/.kube/config")," (on MacOS and Linux) will be updated for you, so you probably won't need to change your configuration. Nonetheless, you can ensure that ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," can interact with your cluster by listing the nodes in the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get nodes\n")),(0,a.kt)("p",null,"If ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," is working with your cluster, you can proceed to deploy ZooKeeper and Bookies."),(0,a.kt)("h3",{id:"zookeeper"},"ZooKeeper"),(0,a.kt)("p",null,"You ",(0,a.kt)("em",{parentName:"p"},"must")," deploy ZooKeeper as the first component, as it is a dependency for the others."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl apply -f zookeeper.yaml\n")),(0,a.kt)("p",null,"Wait until all three ZooKeeper server pods are up and have the status ",(0,a.kt)("inlineCode",{parentName:"p"},"Running"),". You can check on the status of the ZooKeeper pods at any time:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods -l component=zookeeper\nNAME      READY     STATUS             RESTARTS   AGE\nzk-0      1/1       Running            0          18m\nzk-1      1/1       Running            0          17m\nzk-2      0/1       Running            6          15m\n")),(0,a.kt)("p",null,"This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs."),(0,a.kt)("p",null,"If you want to connect to one of the remote zookeeper server, you can use",(0,a.kt)("a",{parentName:"p",href:"https://github.com/rgs1/zk_shell"},"zk-shell"),", you need to forward a local port to the\nremote zookeeper server:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl port-forward zk-0 2181:2181\n$ zk-shell localhost 2181\n")),(0,a.kt)("h3",{id:"deploy-bookies"},"Deploy Bookies"),(0,a.kt)("p",null,"Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/"},"DaemonSet")," or a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/"},"StatefulSet"),"."),(0,a.kt)("blockquote",null,(0,a.kt)("p",{parentName:"blockquote"},"NOTE: ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," vs ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the\ncluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn't require any external storage for Persistent\nVolumes."),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods\nare not interchangeable, the idenifiers for each pod are maintained across any rescheduling."),(0,a.kt)("p",{parentName:"blockquote"},"Which one to use? A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," is the easiest way to deploy a bookkeeper cluster, because it doesn't require additional persistent volume provisioner and use local disks. BookKeeper manages\nthe data replication. It maintains the best latency property. However, it uses ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and ",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," for communications between pods. In some k8s platform (such as DC/OS), ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and\n",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," are not well supported. A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," is only practical when deploying in a cloud environment or any K8S installation that has persistent volumes available. Also be aware, latency\ncan be potentially higher when using persistent volumes, because there is usually built-in replication in the persistent volumes.")),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"# deploy bookies in a daemon set\n$ kubectl apply -f bookkeeper.yaml\n\n# deploy bookies in a stateful set\n$ kubectl apply -f bookkeeper.stateful.yaml\n")),(0,a.kt)("p",null,"You can check on the status of the Bookie pods for these components either in the Kubernetes Dashboard or using ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl"),":"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods\n")),(0,a.kt)("p",null,"While all BookKeeper pods is Running, by zk-shell you could find all available bookies under /ledgers/"),(0,a.kt)("p",null,"You could also run a ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/ivankelly/bookkeeper-tutorial/"},"bookkeeper tutorial")," instance, which named as 'dice' here, in this bookkeeper cluster."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},'$\ufeffkubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"\n')),(0,a.kt)("p",null,"An example output of Dice instance is like this:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-aidl"},'\u279c $ kubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"          \nIf you don\'t see a command prompt, try pressing enter.\nValue = 1, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 2, epoch = 5, leading\n')),(0,a.kt)("h3",{id:"un-deploy"},"Un-Deploy"),(0,a.kt)("p",null,"Delete Demo dice instance"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$\ufeffkubectl delete deployment dice      \n")),(0,a.kt)("p",null,"Delete BookKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f bookkeeper.yaml    \n")),(0,a.kt)("p",null,"Delete ZooKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f zookeeper.yaml    \n")),(0,a.kt)("p",null,"Delete cluster"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters delete bookkeeper-gke-cluster    \n")))}d.isMDXComponent=!0}}]);
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The managed clusters on Google Container Engine is the most convenient way.",source:"@site/versioned_docs/version-4.7.3/deployment/kubernetes.md",sourceDirName:"deployment",slug:"/deployment/kubernetes",permalink:"/docs/4.7.3/deployment/kubernetes",draft:!1,tags:[],version:"4.7.3",frontMatter:{id:"kubernetes",title:"Deploying Apache BookKeeper on Kubernetes"},sidebar:"version-4.7.3/docsSidebar",previous:{title:"Manual deployment",permalink:"/docs/4.7.3/deployment/manual"},next:{title:"BookKeeper administration",permalink:"/docs/4.7.3/admin/bookies"}},i={},p=[{value:"Setup on Google Container Engine",id:"setup-on-google-container-engine",level:2},{value:"Prerequisites",id:"prerequisites",level:3},{value:"Create a new Kubernetes cluster",id:"create-a-new-kubernetes-cluster",level:3},{value:"Dashboard",id:"dashboard",level:3},{value:"ZooKeeper",id:"zookeeper",level:3},{value:"Deploy Bookies",id:"deploy-bookies",level:3},{value:"Un-Deploy",id:"un-deploy",level:3}],u={toc:p},c="wrapper";function d(e){let{components:t,...n}=e;return(0,a.kt)(c,(0,o.Z)({},u,n,{components:t,mdxType:"MDXLayout"}),(0,a.kt)("p",null,"Apache BookKeeper can be easily deployed in ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/"},"Kubernetes")," clusters. The managed clusters on ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/"},"Google Container Engine")," is the most convenient way."),(0,a.kt)("p",null,"The deployment method shown in this guide relies on ",(0,a.kt)("a",{parentName:"p",href:"http://yaml.org/"},"YAML")," definitions for Kubernetes ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/resources-reference/v1.6/"},"resources"),". The ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes"},(0,a.kt)("inlineCode",{parentName:"a"},"kubernetes"))," subdirectory holds resource definitions for:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"A three-node ZooKeeper cluster"),(0,a.kt)("li",{parentName:"ul"},"A BookKeeper cluster with a bookie runs on each node.")),(0,a.kt)("h2",{id:"setup-on-google-container-engine"},"Setup on Google Container Engine"),(0,a.kt)("p",null,"To get started, get source code of ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes"},(0,a.kt)("inlineCode",{parentName:"a"},"kubernetes"))," from github by git clone."),(0,a.kt)("p",null,"If you'd like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the ",(0,a.kt)("inlineCode",{parentName:"p"},"replicas")," parameter in the ",(0,a.kt)("inlineCode",{parentName:"p"},"spec")," section of the appropriate ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/deployment/"},(0,a.kt)("inlineCode",{parentName:"a"},"Deployment"))," or ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/"},(0,a.kt)("inlineCode",{parentName:"a"},"StatefulSet"))," resource."),(0,a.kt)("p",null,(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/kubernetes-engine"},"Google Container Engine")," (GKE) automates the creation and management of Kubernetes clusters in ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/"},"Google Compute Engine")," (GCE)."),(0,a.kt)("h3",{id:"prerequisites"},"Prerequisites"),(0,a.kt)("p",null,"To get started, you'll need:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"A Google Cloud Platform account, which you can sign up for at ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com"},"cloud.google.com")),(0,a.kt)("li",{parentName:"ul"},"An existing Cloud Platform project"),(0,a.kt)("li",{parentName:"ul"},"The ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com/sdk/downloads"},"Google Cloud SDK")," (in particular the ",(0,a.kt)("a",{parentName:"li",href:"https://cloud.google.com/sdk/gcloud/"},(0,a.kt)("inlineCode",{parentName:"a"},"gcloud"))," and ",(0,a.kt)("a",{parentName:"li",href:"https://kubernetes.io/docs/tasks/tools/"},(0,a.kt)("inlineCode",{parentName:"a"},"kubectl"))," tools).")),(0,a.kt)("h3",{id:"create-a-new-kubernetes-cluster"},"Create a new Kubernetes cluster"),(0,a.kt)("p",null,"You can create a new GKE cluster using the ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/sdk/gcloud/reference/container/clusters/create"},(0,a.kt)("inlineCode",{parentName:"a"},"container clusters create"))," command for ",(0,a.kt)("inlineCode",{parentName:"p"},"gcloud"),". This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more."),(0,a.kt)("p",null,"As an example, we'll create a new GKE cluster for Kubernetes version ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164"},"1.6.4")," in the ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/regions-zones/regions-zones#available"},"us-central1-a")," zone. The cluster will be named ",(0,a.kt)("inlineCode",{parentName:"p"},"bookkeeper-gke-cluster")," and will consist of three VMs, each using two locally attached SSDs and running on ",(0,a.kt)("a",{parentName:"p",href:"https://cloud.google.com/compute/docs/machine-types"},"n1-standard-8")," machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud config set compute/zone us-central1-a\n$ gcloud config set project your-project-name\n$ gcloud container clusters create bookkeeper-gke-cluster \\\n  --machine-type=n1-standard-8 \\\n  --num-nodes=3 \\\n  --local-ssd-count=2 \\\n  --enable-kubernetes-alpha\n")),(0,a.kt)("p",null,"By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/overview/working-with-objects/labels"},"labels"),"."),(0,a.kt)("h3",{id:"dashboard"},"Dashboard"),(0,a.kt)("p",null,"You can observe your cluster in the ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/"},"Kubernetes Dashboard")," by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters get-credentials bookkeeper-gke-cluster \\\n  --zone=us-central1-a \\\n  --project=your-project-name\n$ kubectl proxy\n")),(0,a.kt)("p",null,"By default, the proxy will be opened on port 8001. Now you can navigate to ",(0,a.kt)("a",{parentName:"p",href:"http://localhost:8001/ui"},"localhost:8001/ui")," in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying."),(0,a.kt)("p",null,"When you create a cluster, your ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," config in ",(0,a.kt)("inlineCode",{parentName:"p"},"~/.kube/config")," (on MacOS and Linux) will be updated for you, so you probably won't need to change your configuration. Nonetheless, you can ensure that ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," can interact with your cluster by listing the nodes in the cluster:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get nodes\n")),(0,a.kt)("p",null,"If ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl")," is working with your cluster, you can proceed to deploy ZooKeeper and Bookies."),(0,a.kt)("h3",{id:"zookeeper"},"ZooKeeper"),(0,a.kt)("p",null,"You ",(0,a.kt)("em",{parentName:"p"},"must")," deploy ZooKeeper as the first component, as it is a dependency for the others."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl apply -f zookeeper.yaml\n")),(0,a.kt)("p",null,"Wait until all three ZooKeeper server pods are up and have the status ",(0,a.kt)("inlineCode",{parentName:"p"},"Running"),". You can check on the status of the ZooKeeper pods at any time:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods -l component=zookeeper\nNAME      READY     STATUS             RESTARTS   AGE\nzk-0      1/1       Running            0          18m\nzk-1      1/1       Running            0          17m\nzk-2      0/1       Running            6          15m\n")),(0,a.kt)("p",null,"This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs."),(0,a.kt)("p",null,"If you want to connect to one of the remote zookeeper server, you can use",(0,a.kt)("a",{parentName:"p",href:"https://github.com/rgs1/zk_shell"},"zk-shell"),", you need to forward a local port to the\nremote zookeeper server:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl port-forward zk-0 2181:2181\n$ zk-shell localhost 2181\n")),(0,a.kt)("h3",{id:"deploy-bookies"},"Deploy Bookies"),(0,a.kt)("p",null,"Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/"},"DaemonSet")," or a ",(0,a.kt)("a",{parentName:"p",href:"https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/"},"StatefulSet"),"."),(0,a.kt)("blockquote",null,(0,a.kt)("p",{parentName:"blockquote"},"NOTE: ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," vs ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the\ncluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn't require any external storage for Persistent\nVolumes."),(0,a.kt)("p",{parentName:"blockquote"},"A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods\nare not interchangeable, the idenifiers for each pod are maintained across any rescheduling."),(0,a.kt)("p",{parentName:"blockquote"},"Which one to use? A ",(0,a.kt)("em",{parentName:"p"},"DaemonSet")," is the easiest way to deploy a bookkeeper cluster, because it doesn't require additional persistent volume provisioner and use local disks. BookKeeper manages\nthe data replication. It maintains the best latency property. However, it uses ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and ",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," for communications between pods. In some k8s platform (such as DC/OS), ",(0,a.kt)("inlineCode",{parentName:"p"},"hostIP")," and\n",(0,a.kt)("inlineCode",{parentName:"p"},"hostPort")," are not well supported. A ",(0,a.kt)("em",{parentName:"p"},"StatefulSet")," is only practical when deploying in a cloud environment or any K8S installation that has persistent volumes available. Also be aware, latency\ncan be potentially higher when using persistent volumes, because there is usually built-in replication in the persistent volumes.")),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"# deploy bookies in a daemon set\n$ kubectl apply -f bookkeeper.yaml\n\n# deploy bookies in a stateful set\n$ kubectl apply -f bookkeeper.stateful.yaml\n")),(0,a.kt)("p",null,"You can check on the status of the Bookie pods for these components either in the Kubernetes Dashboard or using ",(0,a.kt)("inlineCode",{parentName:"p"},"kubectl"),":"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl get pods\n")),(0,a.kt)("p",null,"While all BookKeeper pods is Running, by zk-shell you could find all available bookies under /ledgers/"),(0,a.kt)("p",null,"You could also run a ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/ivankelly/bookkeeper-tutorial/"},"bookkeeper tutorial")," instance, which named as 'dice' here, in this bookkeeper cluster."),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},'$\ufeffkubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"\n')),(0,a.kt)("p",null,"An example output of Dice instance is like this:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-aidl"},'\u279c $ kubectl run -i --tty --attach dice --image=caiok/bookkeeper-tutorial --env ZOOKEEPER_SERVERS="zk-0.zookeeper"          \nIf you don\'t see a command prompt, try pressing enter.\nValue = 1, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 5, epoch = 5, leading\nValue = 3, epoch = 5, leading\nValue = 2, epoch = 5, leading\nValue = 1, epoch = 5, leading\nValue = 4, epoch = 5, leading\nValue = 2, epoch = 5, leading\n')),(0,a.kt)("h3",{id:"un-deploy"},"Un-Deploy"),(0,a.kt)("p",null,"Delete Demo dice instance"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$\ufeffkubectl delete deployment dice      \n")),(0,a.kt)("p",null,"Delete BookKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f bookkeeper.yaml    \n")),(0,a.kt)("p",null,"Delete ZooKeeper"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ kubectl delete -f zookeeper.yaml    \n")),(0,a.kt)("p",null,"Delete cluster"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-bash"},"$ gcloud container clusters delete bookkeeper-gke-cluster    \n")))}d.isMDXComponent=!0}}]);
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diff --git a/content/community/bookkeeper-proposals/index.html b/content/community/bookkeeper-proposals/index.html
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 <title data-rh="true">BookKeeper Proposals | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/community/bookkeeper-proposals"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docusaurus_tag" content="default"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docsearch:docusaurus_tag" content="default"><meta data-rh="true" property="og:title" content="BookKeeper Proposals | Apache BookKeeper"><meta data-rh="true" name="description" content="This page describes a proposed BookKeeper Proposal (BP) process for proposing a major change to BookKeeper."><meta data-rh="true" property="og:description" content="This page describes a proposed BookKeeper Proposal (BP) process for proposing a major change to BookKeeper."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/community/bookkeeper-proposals"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/community/bookkeeper-proposals" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/community/bookkeeper-proposals" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/community/coding-guide/index.html b/content/community/coding-guide/index.html
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diff --git a/content/community/contributing/index.html b/content/community/contributing/index.html
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diff --git a/content/community/issue-report/index.html b/content/community/issue-report/index.html
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diff --git a/content/community/licensing/index.html b/content/community/licensing/index.html
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@@ -22,7 +22,7 @@
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       </div></div></div></footer></div>
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diff --git a/content/community/mailing-lists/index.html b/content/community/mailing-lists/index.html
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         </div>
       </footer>
       </div></div></div></footer></div>
-<script src="/assets/js/runtime~main.26cc152e.js"></script>
+<script src="/assets/js/runtime~main.94f37568.js"></script>
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diff --git a/content/community/meeting/index.html b/content/community/meeting/index.html
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 <meta name="generator" content="Docusaurus v2.4.0">
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diff --git a/content/community/presentations/index.html b/content/community/presentations/index.html
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diff --git a/content/community/release-guide/index.html b/content/community/release-guide/index.html
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diff --git a/content/community/releases/index.html b/content/community/releases/index.html
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 <meta charset="UTF-8">
 <meta name="generator" content="Docusaurus v2.4.0">
 <title data-rh="true">Release Management | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/community/releases"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docusaurus_tag" content="default"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docsearch:docusaurus_tag" content="default"><meta data-rh="true" property="og:title" content="Release Management | Apache BookKeeper"><meta data-rh="true" name="description" content="Apache BookKeeper community adopts Time Based Release Plan starting from 4.6.0."><meta data-rh="true" property="og:description" content="Apache BookKeeper community adopts Time Based Release Plan starting from 4.6.0."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/community/releases"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/community/releases" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/community/releases" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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       </div></div></div></footer></div>
-<script src="/assets/js/runtime~main.26cc152e.js"></script>
+<script src="/assets/js/runtime~main.94f37568.js"></script>
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diff --git a/content/community/slack/index.html b/content/community/slack/index.html
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diff --git a/content/docs/4.10.0/api/ledger-adv-api/index.html b/content/docs/4.10.0/api/ledger-adv-api/index.html
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href="/docs/4.10.0/development/protocol">Development</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/4.10.0/reference/config">Reference</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><span class="theme-doc-version-badge badge badge--secondary">Version: 4.10.0</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Deploying Apache BookKeeper on Kubernetes</h1></header><p>Apache BookKeeper can be easily deployed in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/container-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
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href="/docs/4.10.0/development/protocol">Development</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/4.10.0/reference/config">Reference</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><span class="theme-doc-version-badge badge badge--secondary">Version: 4.10.0</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Deploying Apache BookKeeper on Kubernetes</h1></header><p>Apache BookKeeper can be easily deployed in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/kubernetes-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
 remote zookeeper server:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl port-forward zk-0 </span><span class="token number" style="color:#36acaa">2181</span><span class="token plain">:2181</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ zk-shell localhost </span><span class="token number" style="color:#36acaa">2181</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deploy-bookies">Deploy Bookies<a href="#deploy-bookies" class="hash-link" aria-label="Direct link to Deploy Bookies" title="Direct link to Deploy Bookies">​</a></h3><p>Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/" target="_blank" rel="noopener noreferrer">DaemonSet</a> or a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer">StatefulSet</a>.</p><blockquote><p>NOTE: <em>DaemonSet</em> vs <em>StatefulSet</em></p><p>A <em>DaemonSet</em> ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the
 cluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn&#x27;t require any external storage for Persistent
 Volumes.</p><p>A <em>StatefulSet</em> maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods
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 <title data-rh="true">The BookKeeper protocol | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.10.0/development/protocol"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.10.0"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.10.0"><meta data-rh="true" name="docsearch:version" content="4.10.0"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.10.0"><meta data-rh="true" property="og:title" content="The BookKeeper protocol | Apache BookKeeper"><meta data-rh="true" name="description" content="BookKeeper uses a special replication protocol for guaranteeing persistent storage of entries in an ensemble of bookies."><meta data-rh="true" property="og:description" content="BookKeeper uses a special replication protocol for guaranteeing persistent storage of entries in an ensemble of bookies."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.10.0/development/protocol"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.10.0/development/protocol" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.10.0/development/protocol" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.10.0/getting-started/concepts/index.html b/content/docs/4.10.0/getting-started/concepts/index.html
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 <title data-rh="true">BookKeeper concepts and architecture | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.10.0/getting-started/concepts"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.10.0"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.10.0"><meta data-rh="true" name="docsearch:version" content="4.10.0"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.10.0"><meta data-rh="true" property="og:title" content="BookKeeper concepts and architecture | Apache BookKeeper"><meta data-rh="true" name="description" content="BookKeeper is a service that provides persistent storage of streams of log entries---aka records---in sequences called ledgers. BookKeeper replicates stored entries across multiple servers."><meta data-rh="true" property="og:description" content="BookKeeper is a service that provides persistent storage of streams of log entries---aka records---in sequences called ledgers. BookKeeper replicates stored entries across multiple servers."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.10.0/getting-started/concepts"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.10.0/getting-started/concepts" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.10.0/getting-started/concepts" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.10.0/getting-started/installation/index.html b/content/docs/4.10.0/getting-started/installation/index.html
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 <title data-rh="true">BookKeeper installation | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.10.0/getting-started/installation"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.10.0"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.10.0"><meta data-rh="true" name="docsearch:version" content="4.10.0"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.10.0"><meta data-rh="true" property="og:title" content="BookKeeper installation | Apache BookKeeper"><meta data-rh="true" name="description" content="You can install BookKeeper either by downloading a GZipped tarball package or cloning the BookKeeper repository."><meta data-rh="true" property="og:description" content="You can install BookKeeper either by downloading a GZipped tarball package or cloning the BookKeeper repository."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.10.0/getting-started/installation"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.10.0/getting-started/installation" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.10.0/getting-started/installation" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.10.0/getting-started/run-locally/index.html b/content/docs/4.10.0/getting-started/run-locally/index.html
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diff --git a/content/docs/4.10.0/overview/index.html b/content/docs/4.10.0/overview/index.html
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diff --git a/content/docs/4.10.0/reference/cli/index.html b/content/docs/4.10.0/reference/cli/index.html
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diff --git a/content/docs/4.10.0/reference/config/index.html b/content/docs/4.10.0/reference/config/index.html
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 <title data-rh="true">BookKeeper configuration | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.10.0/reference/config"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.10.0"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.10.0"><meta data-rh="true" name="docsearch:version" content="4.10.0"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.10.0"><meta data-rh="true" property="og:title" content="BookKeeper configuration | Apache BookKeeper"><meta data-rh="true" name="description" content="The table below lists parameters that you can set to configure bookies. All configuration takes place in the bk_server.conf file in the bookkeeper-server/conf directory of your BookKeeper installation."><meta data-rh="true" property="og:description" content="The table below lists parameters that you can set to configure bookies. All configuration takes place in the bk_server.conf file in the bookkeeper-server/conf directory of your BookKeeper installation."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.10.0/reference/config"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.10.0/reference/config" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.10.0/reference/config" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.10.0/security/overview/index.html b/content/docs/4.10.0/security/overview/index.html
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 <title data-rh="true">BookKeeper Security | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.10.0/security/overview"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.10.0"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.10.0"><meta data-rh="true" name="docsearch:version" content="4.10.0"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.10.0"><meta data-rh="true" property="og:title" content="BookKeeper Security | Apache BookKeeper"><meta data-rh="true" name="description" content="In the 4.5.0 release, the BookKeeper community added a number of features that can be used, together or separately, to secure a BookKeeper cluster."><meta data-rh="true" property="og:description" content="In the 4.5.0 release, the BookKeeper community added a number of features that can be used, together or separately, to secure a BookKeeper cluster."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.10.0/security/overview"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.10.0/security/overview" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.10.0/security/overview" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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href="/docs/4.11.1/development/protocol">Development</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/4.11.1/reference/config">Reference</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><span class="theme-doc-version-badge badge badge--secondary">Version: 4.11.1</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Deploying Apache BookKeeper on Kubernetes</h1></header><p>Apache BookKeeper can be easily deployed in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/container-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
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href="/docs/4.11.1/development/protocol">Development</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/4.11.1/reference/config">Reference</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><span class="theme-doc-version-badge badge badge--secondary">Version: 4.11.1</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Deploying Apache BookKeeper on Kubernetes</h1></header><p>Apache BookKeeper can be easily deployed in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/kubernetes-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
 remote zookeeper server:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl port-forward zk-0 </span><span class="token number" style="color:#36acaa">2181</span><span class="token plain">:2181</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ zk-shell localhost </span><span class="token number" style="color:#36acaa">2181</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deploy-bookies">Deploy Bookies<a href="#deploy-bookies" class="hash-link" aria-label="Direct link to Deploy Bookies" title="Direct link to Deploy Bookies">​</a></h3><p>Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/" target="_blank" rel="noopener noreferrer">DaemonSet</a> or a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer">StatefulSet</a>.</p><blockquote><p>NOTE: <em>DaemonSet</em> vs <em>StatefulSet</em></p><p>A <em>DaemonSet</em> ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the
 cluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn&#x27;t require any external storage for Persistent
 Volumes.</p><p>A <em>StatefulSet</em> maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods
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 <title data-rh="true">The BookKeeper protocol | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.11.1/development/protocol"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.11.1"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.11.1"><meta data-rh="true" name="docsearch:version" content="4.11.1"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.11.1"><meta data-rh="true" property="og:title" content="The BookKeeper protocol | Apache BookKeeper"><meta data-rh="true" name="description" content="BookKeeper uses a special replication protocol for guaranteeing persistent storage of entries in an ensemble of bookies."><meta data-rh="true" property="og:description" content="BookKeeper uses a special replication protocol for guaranteeing persistent storage of entries in an ensemble of bookies."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.11.1/development/protocol"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.11.1/development/protocol" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.11.1/development/protocol" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.11.1/getting-started/concepts/index.html b/content/docs/4.11.1/getting-started/concepts/index.html
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diff --git a/content/docs/4.11.1/getting-started/run-locally/index.html b/content/docs/4.11.1/getting-started/run-locally/index.html
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 <title data-rh="true">Run bookies locally | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.11.1/getting-started/run-locally"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.11.1"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.11.1"><meta data-rh="true" name="docsearch:version" content="4.11.1"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.11.1"><meta data-rh="true" property="og:title" content="Run bookies locally | Apache BookKeeper"><meta data-rh="true" name="description" content="Bookies are individual BookKeeper servers. You can run an ensemble of bookies locally on a single machine using the localbookie command of the bookkeeper CLI tool and specifying the number of bookies you&#x27;d like to include in the ensemble."><meta data-rh="true" property="og:description" content="Bookies are individual BookKeeper servers. You can run an ensemble of bookies locally on a single machine using the localbookie command of the bookkeeper CLI tool and specifying the number of bookies you&#x27;d like to include in the ensemble."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.11.1/getting-started/run-locally"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.11.1/getting-started/run-locally" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.11.1/getting-started/run-locally" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.11.1/reference/cli/index.html b/content/docs/4.11.1/reference/cli/index.html
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diff --git a/content/docs/4.11.1/reference/config/index.html b/content/docs/4.11.1/reference/config/index.html
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 <title data-rh="true">BookKeeper configuration | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.11.1/reference/config"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.11.1"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.11.1"><meta data-rh="true" name="docsearch:version" content="4.11.1"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.11.1"><meta data-rh="true" property="og:title" content="BookKeeper configuration | Apache BookKeeper"><meta data-rh="true" name="description" content="The table below lists parameters that you can set to configure bookies. All configuration takes place in the bk_server.conf file in the bookkeeper-server/conf directory of your BookKeeper installation."><meta data-rh="true" property="og:description" content="The table below lists parameters that you can set to configure bookies. All configuration takes place in the bk_server.conf file in the bookkeeper-server/conf directory of your BookKeeper installation."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.11.1/reference/config"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.11.1/reference/config" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.11.1/reference/config" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.11.1/security/overview/index.html b/content/docs/4.11.1/security/overview/index.html
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href="/docs/4.12.1/development/protocol">Development</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/4.12.1/reference/config">Reference</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><span class="theme-doc-version-badge badge badge--secondary">Version: 4.12.1</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Deploying Apache BookKeeper on Kubernetes</h1></header><p>Apache BookKeeper can be easily deployed in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/container-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
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href="/docs/4.12.1/development/protocol">Development</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/4.12.1/reference/config">Reference</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><span class="theme-doc-version-badge badge badge--secondary">Version: 4.12.1</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Deploying Apache BookKeeper on Kubernetes</h1></header><p>Apache BookKeeper can be easily deployed in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/kubernetes-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
 remote zookeeper server:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl port-forward zk-0 </span><span class="token number" style="color:#36acaa">2181</span><span class="token plain">:2181</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ zk-shell localhost </span><span class="token number" style="color:#36acaa">2181</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deploy-bookies">Deploy Bookies<a href="#deploy-bookies" class="hash-link" aria-label="Direct link to Deploy Bookies" title="Direct link to Deploy Bookies">​</a></h3><p>Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/" target="_blank" rel="noopener noreferrer">DaemonSet</a> or a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer">StatefulSet</a>.</p><blockquote><p>NOTE: <em>DaemonSet</em> vs <em>StatefulSet</em></p><p>A <em>DaemonSet</em> ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the
 cluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn&#x27;t require any external storage for Persistent
 Volumes.</p><p>A <em>StatefulSet</em> maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods
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diff --git a/content/docs/4.12.1/getting-started/concepts/index.html b/content/docs/4.12.1/getting-started/concepts/index.html
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diff --git a/content/docs/4.12.1/getting-started/installation/index.html b/content/docs/4.12.1/getting-started/installation/index.html
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diff --git a/content/docs/4.12.1/getting-started/run-locally/index.html b/content/docs/4.12.1/getting-started/run-locally/index.html
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diff --git a/content/docs/4.12.1/overview/index.html b/content/docs/4.12.1/overview/index.html
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diff --git a/content/docs/4.12.1/reference/cli/index.html b/content/docs/4.12.1/reference/cli/index.html
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diff --git a/content/docs/4.12.1/reference/config/index.html b/content/docs/4.12.1/reference/config/index.html
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 <title data-rh="true">BookKeeper configuration | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.12.1/reference/config"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.12.1"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.12.1"><meta data-rh="true" name="docsearch:version" content="4.12.1"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.12.1"><meta data-rh="true" property="og:title" content="BookKeeper configuration | Apache BookKeeper"><meta data-rh="true" name="description" content="The table below lists parameters that you can set to configure bookies. All configuration takes place in the bk_server.conf file in the bookkeeper-server/conf directory of your BookKeeper installation."><meta data-rh="true" property="og:description" content="The table below lists parameters that you can set to configure bookies. All configuration takes place in the bk_server.conf file in the bookkeeper-server/conf directory of your BookKeeper installation."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.12.1/reference/config"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.12.1/reference/config" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.12.1/reference/config" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.12.1/security/overview/index.html b/content/docs/4.12.1/security/overview/index.html
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 <title data-rh="true">BookKeeper Security | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.12.1/security/overview"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.12.1"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.12.1"><meta data-rh="true" name="docsearch:version" content="4.12.1"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.12.1"><meta data-rh="true" property="og:title" content="BookKeeper Security | Apache BookKeeper"><meta data-rh="true" name="description" content="In the 4.5.0 release, the BookKeeper community added a number of features that can be used, together or separately, to secure a BookKeeper cluster."><meta data-rh="true" property="og:description" content="In the 4.5.0 release, the BookKeeper community added a number of features that can be used, together or separately, to secure a BookKeeper cluster."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.12.1/security/overview"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.12.1/security/overview" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.12.1/security/overview" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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href="/docs/4.13.0/development/protocol">Development</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/4.13.0/reference/config">Reference</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><span class="theme-doc-version-badge badge badge--secondary">Version: 4.13.0</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Deploying Apache BookKeeper on Kubernetes</h1></header><p>Apache BookKeeper can be easily deployed in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/container-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
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href="/docs/4.13.0/development/protocol">Development</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/4.13.0/reference/config">Reference</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><span class="theme-doc-version-badge badge badge--secondary">Version: 4.13.0</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Deploying Apache BookKeeper on Kubernetes</h1></header><p>Apache BookKeeper can be easily deployed in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/kubernetes-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
 remote zookeeper server:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl port-forward zk-0 </span><span class="token number" style="color:#36acaa">2181</span><span class="token plain">:2181</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ zk-shell localhost </span><span class="token number" style="color:#36acaa">2181</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deploy-bookies">Deploy Bookies<a href="#deploy-bookies" class="hash-link" aria-label="Direct link to Deploy Bookies" title="Direct link to Deploy Bookies">​</a></h3><p>Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/" target="_blank" rel="noopener noreferrer">DaemonSet</a> or a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer">StatefulSet</a>.</p><blockquote><p>NOTE: <em>DaemonSet</em> vs <em>StatefulSet</em></p><p>A <em>DaemonSet</em> ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the
 cluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn&#x27;t require any external storage for Persistent
 Volumes.</p><p>A <em>StatefulSet</em> maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods
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 <title data-rh="true">The BookKeeper protocol | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.13.0/development/protocol"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.13.0"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.13.0"><meta data-rh="true" name="docsearch:version" content="4.13.0"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.13.0"><meta data-rh="true" property="og:title" content="The BookKeeper protocol | Apache BookKeeper"><meta data-rh="true" name="description" content="BookKeeper uses a special replication protocol for guaranteeing persistent storage of entries in an ensemble of bookies."><meta data-rh="true" property="og:description" content="BookKeeper uses a special replication protocol for guaranteeing persistent storage of entries in an ensemble of bookies."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.13.0/development/protocol"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.13.0/development/protocol" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.13.0/development/protocol" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.13.0/getting-started/concepts/index.html b/content/docs/4.13.0/getting-started/concepts/index.html
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diff --git a/content/docs/4.13.0/getting-started/installation/index.html b/content/docs/4.13.0/getting-started/installation/index.html
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diff --git a/content/docs/4.13.0/getting-started/run-locally/index.html b/content/docs/4.13.0/getting-started/run-locally/index.html
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diff --git a/content/docs/4.13.0/overview/index.html b/content/docs/4.13.0/overview/index.html
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diff --git a/content/docs/4.13.0/reference/cli/index.html b/content/docs/4.13.0/reference/cli/index.html
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diff --git a/content/docs/4.13.0/reference/config/index.html b/content/docs/4.13.0/reference/config/index.html
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 <title data-rh="true">BookKeeper configuration | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.13.0/reference/config"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.13.0"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.13.0"><meta data-rh="true" name="docsearch:version" content="4.13.0"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.13.0"><meta data-rh="true" property="og:title" content="BookKeeper configuration | Apache BookKeeper"><meta data-rh="true" name="description" content="The table below lists parameters that you can set to configure bookies. All configuration takes place in the bk_server.conf file in the bookkeeper-server/conf directory of your BookKeeper installation."><meta data-rh="true" property="og:description" content="The table below lists parameters that you can set to configure bookies. All configuration takes place in the bk_server.conf file in the bookkeeper-server/conf directory of your BookKeeper installation."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.13.0/reference/config"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.13.0/reference/config" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.13.0/reference/config" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.13.0/security/overview/index.html b/content/docs/4.13.0/security/overview/index.html
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 <title data-rh="true">BookKeeper Security | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.13.0/security/overview"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.13.0"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.13.0"><meta data-rh="true" name="docsearch:version" content="4.13.0"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.13.0"><meta data-rh="true" property="og:title" content="BookKeeper Security | Apache BookKeeper"><meta data-rh="true" name="description" content="In the 4.5.0 release, the BookKeeper community added a number of features that can be used, together or separately, to secure a BookKeeper cluster."><meta data-rh="true" property="og:description" content="In the 4.5.0 release, the BookKeeper community added a number of features that can be used, together or separately, to secure a BookKeeper cluster."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.13.0/security/overview"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.13.0/security/overview" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.13.0/security/overview" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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href="/docs/4.14.8/development/protocol">Development</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/4.14.8/reference/config">Reference</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><span class="theme-doc-version-badge badge badge--secondary">Version: 4.14.8</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Deploying Apache BookKeeper on Kubernetes</h1></header><p>Apache BookKeeper can be easily deployed in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/container-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
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href="/docs/4.14.8/development/protocol">Development</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/4.14.8/reference/config">Reference</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><span class="theme-doc-version-badge badge badge--secondary">Version: 4.14.8</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Deploying Apache BookKeeper on Kubernetes</h1></header><p>Apache BookKeeper can be easily deployed in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/kubernetes-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
 remote zookeeper server:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl port-forward zk-0 </span><span class="token number" style="color:#36acaa">2181</span><span class="token plain">:2181</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ zk-shell localhost </span><span class="token number" style="color:#36acaa">2181</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deploy-bookies">Deploy Bookies<a href="#deploy-bookies" class="hash-link" aria-label="Direct link to Deploy Bookies" title="Direct link to Deploy Bookies">​</a></h3><p>Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/" target="_blank" rel="noopener noreferrer">DaemonSet</a> or a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer">StatefulSet</a>.</p><blockquote><p>NOTE: <em>DaemonSet</em> vs <em>StatefulSet</em></p><p>A <em>DaemonSet</em> ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the
 cluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn&#x27;t require any external storage for Persistent
 Volumes.</p><p>A <em>StatefulSet</em> maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods
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 <title data-rh="true">The BookKeeper protocol | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.14.8/development/protocol"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.14.8"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.14.8"><meta data-rh="true" name="docsearch:version" content="4.14.8"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.14.8"><meta data-rh="true" property="og:title" content="The BookKeeper protocol | Apache BookKeeper"><meta data-rh="true" name="description" content="BookKeeper uses a special replication protocol for guaranteeing persistent storage of entries in an ensemble of bookies."><meta data-rh="true" property="og:description" content="BookKeeper uses a special replication protocol for guaranteeing persistent storage of entries in an ensemble of bookies."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.14.8/development/protocol"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.14.8/development/protocol" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.14.8/development/protocol" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.14.8/getting-started/concepts/index.html b/content/docs/4.14.8/getting-started/concepts/index.html
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diff --git a/content/docs/4.14.8/getting-started/installation/index.html b/content/docs/4.14.8/getting-started/installation/index.html
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diff --git a/content/docs/4.14.8/getting-started/run-locally/index.html b/content/docs/4.14.8/getting-started/run-locally/index.html
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diff --git a/content/docs/4.14.8/overview/index.html b/content/docs/4.14.8/overview/index.html
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diff --git a/content/docs/4.14.8/reference/cli/index.html b/content/docs/4.14.8/reference/cli/index.html
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diff --git a/content/docs/4.14.8/reference/config/index.html b/content/docs/4.14.8/reference/config/index.html
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 <title data-rh="true">BookKeeper configuration | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.14.8/reference/config"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.14.8"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.14.8"><meta data-rh="true" name="docsearch:version" content="4.14.8"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.14.8"><meta data-rh="true" property="og:title" content="BookKeeper configuration | Apache BookKeeper"><meta data-rh="true" name="description" content="The table below lists parameters that you can set to configure bookies. All configuration takes place in the bk_server.conf file in the bookkeeper-server/conf directory of your BookKeeper installation."><meta data-rh="true" property="og:description" content="The table below lists parameters that you can set to configure bookies. All configuration takes place in the bk_server.conf file in the bookkeeper-server/conf directory of your BookKeeper installation."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.14.8/reference/config"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.14.8/reference/config" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.14.8/reference/config" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.14.8/security/overview/index.html b/content/docs/4.14.8/security/overview/index.html
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 <title data-rh="true">BookKeeper Security | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.14.8/security/overview"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.14.8"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.14.8"><meta data-rh="true" name="docsearch:version" content="4.14.8"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.14.8"><meta data-rh="true" property="og:title" content="BookKeeper Security | Apache BookKeeper"><meta data-rh="true" name="description" content="In the 4.5.0 release, the BookKeeper community added a number of features that can be used, together or separately, to secure a BookKeeper cluster."><meta data-rh="true" property="og:description" content="In the 4.5.0 release, the BookKeeper community added a number of features that can be used, together or separately, to secure a BookKeeper cluster."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.14.8/security/overview"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.14.8/security/overview" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.14.8/security/overview" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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href="/docs/4.15.5/development/protocol">Development</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/4.15.5/reference/config">Reference</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><span class="theme-doc-version-badge badge badge--secondary">Version: 4.15.5</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Deploying Apache BookKeeper on Kubernetes</h1></header><p>Apache BookKeeper can be easily deployed in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/container-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
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href="/docs/4.15.5/development/protocol">Development</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/4.15.5/reference/config">Reference</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><span class="theme-doc-version-badge badge badge--secondary">Version: 4.15.5</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Deploying Apache BookKeeper on Kubernetes</h1></header><p>Apache BookKeeper can be easily deployed in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/kubernetes-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
 remote zookeeper server:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl port-forward zk-0 </span><span class="token number" style="color:#36acaa">2181</span><span class="token plain">:2181</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ zk-shell localhost </span><span class="token number" style="color:#36acaa">2181</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deploy-bookies">Deploy Bookies<a href="#deploy-bookies" class="hash-link" aria-label="Direct link to Deploy Bookies" title="Direct link to Deploy Bookies">​</a></h3><p>Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/" target="_blank" rel="noopener noreferrer">DaemonSet</a> or a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer">StatefulSet</a>.</p><blockquote><p>NOTE: <em>DaemonSet</em> vs <em>StatefulSet</em></p><p>A <em>DaemonSet</em> ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the
 cluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn&#x27;t require any external storage for Persistent
 Volumes.</p><p>A <em>StatefulSet</em> maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods
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 <title data-rh="true">The BookKeeper protocol | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.15.5/development/protocol"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.15.5"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.15.5"><meta data-rh="true" name="docsearch:version" content="4.15.5"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.15.5"><meta data-rh="true" property="og:title" content="The BookKeeper protocol | Apache BookKeeper"><meta data-rh="true" name="description" content="BookKeeper uses a special replication protocol for guaranteeing persistent storage of entries in an ensemble of bookies."><meta data-rh="true" property="og:description" content="BookKeeper uses a special replication protocol for guaranteeing persistent storage of entries in an ensemble of bookies."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.15.5/development/protocol"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.15.5/development/protocol" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.15.5/development/protocol" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.15.5/getting-started/concepts/index.html b/content/docs/4.15.5/getting-started/concepts/index.html
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 <title data-rh="true">BookKeeper concepts and architecture | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.15.5/getting-started/concepts"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.15.5"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.15.5"><meta data-rh="true" name="docsearch:version" content="4.15.5"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.15.5"><meta data-rh="true" property="og:title" content="BookKeeper concepts and architecture | Apache BookKeeper"><meta data-rh="true" name="description" content="BookKeeper is a service that provides persistent storage of streams of log entries---aka records---in sequences called ledgers. BookKeeper replicates stored entries across multiple servers."><meta data-rh="true" property="og:description" content="BookKeeper is a service that provides persistent storage of streams of log entries---aka records---in sequences called ledgers. BookKeeper replicates stored entries across multiple servers."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.15.5/getting-started/concepts"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.15.5/getting-started/concepts" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.15.5/getting-started/concepts" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.15.5/getting-started/installation/index.html b/content/docs/4.15.5/getting-started/installation/index.html
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 <title data-rh="true">BookKeeper installation | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.15.5/getting-started/installation"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.15.5"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.15.5"><meta data-rh="true" name="docsearch:version" content="4.15.5"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.15.5"><meta data-rh="true" property="og:title" content="BookKeeper installation | Apache BookKeeper"><meta data-rh="true" name="description" content="You can install BookKeeper either by downloading a GZipped tarball package, using the Docker image or cloning the BookKeeper repository."><meta data-rh="true" property="og:description" content="You can install BookKeeper either by downloading a GZipped tarball package, using the Docker image or cloning the BookKeeper repository."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.15.5/getting-started/installation"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.15.5/getting-started/installation" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.15.5/getting-started/installation" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.15.5/getting-started/run-locally/index.html b/content/docs/4.15.5/getting-started/run-locally/index.html
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diff --git a/content/docs/4.15.5/overview/index.html b/content/docs/4.15.5/overview/index.html
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diff --git a/content/docs/4.15.5/reference/cli/index.html b/content/docs/4.15.5/reference/cli/index.html
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diff --git a/content/docs/4.15.5/reference/config/index.html b/content/docs/4.15.5/reference/config/index.html
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 <title data-rh="true">BookKeeper configuration | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.15.5/reference/config"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.15.5"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.15.5"><meta data-rh="true" name="docsearch:version" content="4.15.5"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.15.5"><meta data-rh="true" property="og:title" content="BookKeeper configuration | Apache BookKeeper"><meta data-rh="true" name="description" content="The table below lists parameters that you can set to configure bookies. All configuration takes place in the bk_server.conf file in the bookkeeper-server/conf directory of your BookKeeper installation."><meta data-rh="true" property="og:description" content="The table below lists parameters that you can set to configure bookies. All configuration takes place in the bk_server.conf file in the bookkeeper-server/conf directory of your BookKeeper installation."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.15.5/reference/config"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.15.5/reference/config" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.15.5/reference/config" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.15.5/security/overview/index.html b/content/docs/4.15.5/security/overview/index.html
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 <title data-rh="true">BookKeeper Security | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.15.5/security/overview"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.15.5"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.15.5"><meta data-rh="true" name="docsearch:version" content="4.15.5"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.15.5"><meta data-rh="true" property="og:title" content="BookKeeper Security | Apache BookKeeper"><meta data-rh="true" name="description" content="In the 4.5.0 release, the BookKeeper community added a number of features that can be used, together or separately, to secure a BookKeeper cluster."><meta data-rh="true" property="og:description" content="In the 4.5.0 release, the BookKeeper community added a number of features that can be used, together or separately, to secure a BookKeeper cluster."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.15.5/security/overview"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.15.5/security/overview" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.15.5/security/overview" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.15.5/security/sasl/index.html b/content/docs/4.15.5/security/sasl/index.html
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 <meta charset="UTF-8">
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 <title data-rh="true">Authentication using SASL | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.15.5/security/sasl"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.15.5"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.15.5"><meta data-rh="true" name="docsearch:version" content="4.15.5"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.15.5"><meta data-rh="true" property="og:title" content="Authentication using SASL | Apache BookKeeper"><meta data-rh="true" name="description" content="Bookies support client authentication via SASL. Currently we only support GSSAPI (Kerberos). We will start"><meta data-rh="true" property="og:description" content="Bookies support client authentication via SASL. Currently we only support GSSAPI (Kerberos). We will start"><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.15.5/security/sasl"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.15.5/security/sasl" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.15.5/security/sasl" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.16.5/api/ledger-adv-api/index.html b/content/docs/4.16.5/api/ledger-adv-api/index.html
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href="/docs/4.16.5/development/protocol">Development</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/4.16.5/reference/config">Reference</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><span class="theme-doc-version-badge badge badge--secondary">Version: 4.16.5</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Deploying Apache BookKeeper on Kubernetes</h1></header><p>Apache BookKeeper can be easily deployed in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/container-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
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href="/docs/4.16.5/development/protocol">Development</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/4.16.5/reference/config">Reference</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><span class="theme-doc-version-badge badge badge--secondary">Version: 4.16.5</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Deploying Apache BookKeeper on Kubernetes</h1></header><p>Apache BookKeeper can be easily deployed in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/kubernetes-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
 remote zookeeper server:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl port-forward zk-0 </span><span class="token number" style="color:#36acaa">2181</span><span class="token plain">:2181</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ zk-shell localhost </span><span class="token number" style="color:#36acaa">2181</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deploy-bookies">Deploy Bookies<a href="#deploy-bookies" class="hash-link" aria-label="Direct link to Deploy Bookies" title="Direct link to Deploy Bookies">​</a></h3><p>Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/" target="_blank" rel="noopener noreferrer">DaemonSet</a> or a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer">StatefulSet</a>.</p><blockquote><p>NOTE: <em>DaemonSet</em> vs <em>StatefulSet</em></p><p>A <em>DaemonSet</em> ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the
 cluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn&#x27;t require any external storage for Persistent
 Volumes.</p><p>A <em>StatefulSet</em> maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods
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 <title data-rh="true">The BookKeeper protocol | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.16.5/development/protocol"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.16.5"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.16.5"><meta data-rh="true" name="docsearch:version" content="4.16.5"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.16.5"><meta data-rh="true" property="og:title" content="The BookKeeper protocol | Apache BookKeeper"><meta data-rh="true" name="description" content="BookKeeper uses a special replication protocol for guaranteeing persistent storage of entries in an ensemble of bookies."><meta data-rh="true" property="og:description" content="BookKeeper uses a special replication protocol for guaranteeing persistent storage of entries in an ensemble of bookies."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.16.5/development/protocol"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.16.5/development/protocol" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.16.5/development/protocol" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.16.5/getting-started/concepts/index.html b/content/docs/4.16.5/getting-started/concepts/index.html
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 <title data-rh="true">BookKeeper concepts and architecture | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.16.5/getting-started/concepts"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.16.5"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.16.5"><meta data-rh="true" name="docsearch:version" content="4.16.5"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.16.5"><meta data-rh="true" property="og:title" content="BookKeeper concepts and architecture | Apache BookKeeper"><meta data-rh="true" name="description" content="BookKeeper is a service that provides persistent storage of streams of log entries---aka records---in sequences called ledgers. BookKeeper replicates stored entries across multiple servers."><meta data-rh="true" property="og:description" content="BookKeeper is a service that provides persistent storage of streams of log entries---aka records---in sequences called ledgers. BookKeeper replicates stored entries across multiple servers."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.16.5/getting-started/concepts"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.16.5/getting-started/concepts" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.16.5/getting-started/concepts" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.16.5/getting-started/installation/index.html b/content/docs/4.16.5/getting-started/installation/index.html
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 <title data-rh="true">BookKeeper installation | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.16.5/getting-started/installation"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.16.5"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.16.5"><meta data-rh="true" name="docsearch:version" content="4.16.5"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.16.5"><meta data-rh="true" property="og:title" content="BookKeeper installation | Apache BookKeeper"><meta data-rh="true" name="description" content="You can install BookKeeper either by downloading a GZipped tarball package, using the Docker image or cloning the BookKeeper repository."><meta data-rh="true" property="og:description" content="You can install BookKeeper either by downloading a GZipped tarball package, using the Docker image or cloning the BookKeeper repository."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.16.5/getting-started/installation"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.16.5/getting-started/installation" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.16.5/getting-started/installation" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.16.5/getting-started/run-locally/index.html b/content/docs/4.16.5/getting-started/run-locally/index.html
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diff --git a/content/docs/4.16.5/overview/index.html b/content/docs/4.16.5/overview/index.html
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diff --git a/content/docs/4.16.5/reference/cli/index.html b/content/docs/4.16.5/reference/cli/index.html
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diff --git a/content/docs/4.16.5/reference/config/index.html b/content/docs/4.16.5/reference/config/index.html
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 <title data-rh="true">BookKeeper configuration | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.16.5/reference/config"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.16.5"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.16.5"><meta data-rh="true" name="docsearch:version" content="4.16.5"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.16.5"><meta data-rh="true" property="og:title" content="BookKeeper configuration | Apache BookKeeper"><meta data-rh="true" name="description" content="The table below lists parameters that you can set to configure bookies. All configuration takes place in the bk_server.conf file in the bookkeeper-server/conf directory of your BookKeeper installation."><meta data-rh="true" property="og:description" content="The table below lists parameters that you can set to configure bookies. All configuration takes place in the bk_server.conf file in the bookkeeper-server/conf directory of your BookKeeper installation."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.16.5/reference/config"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.16.5/reference/config" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.16.5/reference/config" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.16.5/security/overview/index.html b/content/docs/4.16.5/security/overview/index.html
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 <title data-rh="true">BookKeeper Security | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.16.5/security/overview"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.16.5"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.16.5"><meta data-rh="true" name="docsearch:version" content="4.16.5"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.16.5"><meta data-rh="true" property="og:title" content="BookKeeper Security | Apache BookKeeper"><meta data-rh="true" name="description" content="In the 4.5.0 release, the BookKeeper community added a number of features that can be used, together or separately, to secure a BookKeeper cluster."><meta data-rh="true" property="og:description" content="In the 4.5.0 release, the BookKeeper community added a number of features that can be used, together or separately, to secure a BookKeeper cluster."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.16.5/security/overview"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.16.5/security/overview" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.16.5/security/overview" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.16.5/security/sasl/index.html b/content/docs/4.16.5/security/sasl/index.html
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 <meta charset="UTF-8">
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 <title data-rh="true">Authentication using SASL | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.16.5/security/sasl"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.16.5"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.16.5"><meta data-rh="true" name="docsearch:version" content="4.16.5"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.16.5"><meta data-rh="true" property="og:title" content="Authentication using SASL | Apache BookKeeper"><meta data-rh="true" name="description" content="Bookies support client authentication via SASL. Currently we only support GSSAPI (Kerberos). We will start"><meta data-rh="true" property="og:description" content="Bookies support client authentication via SASL. Currently we only support GSSAPI (Kerberos). We will start"><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.16.5/security/sasl"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.16.5/security/sasl" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.16.5/security/sasl" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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 <title data-rh="true">BookKeeper installation | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.5.1/getting-started/installation"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.5.1"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.5.1"><meta data-rh="true" name="docsearch:version" content="4.5.1"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.5.1"><meta data-rh="true" property="og:title" content="BookKeeper installation | Apache BookKeeper"><meta data-rh="true" name="description" content="You can install BookKeeper either by downloading a GZipped tarball package or cloning the BookKeeper repository."><meta data-rh="true" property="og:description" content="You can install BookKeeper either by downloading a GZipped tarball package or cloning the BookKeeper repository."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.5.1/getting-started/installation"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.5.1/getting-started/installation" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.5.1/getting-started/installation" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.5.1/getting-started/run-locally/index.html b/content/docs/4.5.1/getting-started/run-locally/index.html
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diff --git a/content/docs/4.5.1/reference/config/index.html b/content/docs/4.5.1/reference/config/index.html
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 <title data-rh="true">BookKeeper configuration | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.5.1/reference/config"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.5.1"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.5.1"><meta data-rh="true" name="docsearch:version" content="4.5.1"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.5.1"><meta data-rh="true" property="og:title" content="BookKeeper configuration | Apache BookKeeper"><meta data-rh="true" name="description" content="The table below lists parameters that you can set to configure bookies. All configuration takes place in the bk_server.conf file in the bookkeeper-server/conf directory of your BookKeeper installation."><meta data-rh="true" property="og:description" content="The table below lists parameters that you can set to configure bookies. All configuration takes place in the bk_server.conf file in the bookkeeper-server/conf directory of your BookKeeper installation."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.5.1/reference/config"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.5.1/reference/config" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.5.1/reference/config" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.5.1/reference/metrics/index.html b/content/docs/4.5.1/reference/metrics/index.html
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diff --git a/content/docs/4.5.1/security/overview/index.html b/content/docs/4.5.1/security/overview/index.html
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diff --git a/content/docs/4.5.1/security/sasl/index.html b/content/docs/4.5.1/security/sasl/index.html
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 <title data-rh="true">Authentication using SASL | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.5.1/security/sasl"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.5.1"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.5.1"><meta data-rh="true" name="docsearch:version" content="4.5.1"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.5.1"><meta data-rh="true" property="og:title" content="Authentication using SASL | Apache BookKeeper"><meta data-rh="true" name="description" content="Bookies support client authentication via SASL. Currently we only support GSSAPI (Kerberos). We will start"><meta data-rh="true" property="og:description" content="Bookies support client authentication via SASL. Currently we only support GSSAPI (Kerberos). We will start"><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.5.1/security/sasl"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.5.1/security/sasl" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.5.1/security/sasl" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.5.1/security/tls/index.html b/content/docs/4.5.1/security/tls/index.html
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 <title data-rh="true">Encryption and Authentication using TLS | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.5.1/security/tls"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.5.1"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.5.1"><meta data-rh="true" name="docsearch:version" content="4.5.1"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.5.1"><meta data-rh="true" property="og:title" content="Encryption and Authentication using TLS | Apache BookKeeper"><meta data-rh="true" name="description" content="Apache BookKeeper allows clients and autorecovery daemons to communicate over TLS, although this is not enabled by default."><meta data-rh="true" property="og:description" content="Apache BookKeeper allows clients and autorecovery daemons to communicate over TLS, although this is not enabled by default."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.5.1/security/tls"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.5.1/security/tls" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.5.1/security/tls" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.6.2/api/ledger-adv-api/index.html b/content/docs/4.6.2/api/ledger-adv-api/index.html
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href="/docs/4.6.2/development/protocol">Development</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/4.6.2/reference/config">Reference</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><span class="theme-doc-version-badge badge badge--secondary">Version: 4.6.2</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Deploying Apache BookKeeper on Kubernetes</h1></header><p>Apache BookKeeper can be easily deployed in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/container-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
+<div role="region" aria-label="Skip to main content"><a class="skipToContent_fXgn" href="#docusaurus_skipToContent_fallback">Skip to main content</a></div><nav aria-label="Main" class="navbar navbar--fixed-top"><div class="navbar__inner"><div class="navbar__items"><button aria-label="Toggle navigation bar" aria-expanded="false" class="navbar__toggle clean-btn" type="button"><svg width="30" height="30" viewBox="0 0 30 30" aria-hidden="true"><path stroke="currentColor" stroke-linecap="round" stroke-miterlimit="10" stroke-width="2" d="M4 7h22M4 15h22M4 23h22"></path></svg></button><a class="navbar__brand" href="/"><div class="navbar__logo"><img src="/img/bk-logo.svg" alt="Apache Bookkeeper" class="themedImage_ToTc themedImage--light_HNdA"><img src="/img/bk-logo.svg" alt="Apache Bookkeeper" class="themedImage_ToTc themedImage--dark_i4oU"></div><b class="navbar__title text--truncate">Apache BookKeeper</b></a><a aria-current="page" class="navbar__item navbar__link navbar__link--active" 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href="/docs/4.6.2/development/protocol">Development</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/4.6.2/reference/config">Reference</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><span class="theme-doc-version-badge badge badge--secondary">Version: 4.6.2</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Deploying Apache BookKeeper on Kubernetes</h1></header><p>Apache BookKeeper can be easily deployed in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/kubernetes-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
 remote zookeeper server:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl port-forward zk-0 </span><span class="token number" style="color:#36acaa">2181</span><span class="token plain">:2181</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ zk-shell localhost </span><span class="token number" style="color:#36acaa">2181</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deploy-bookies">Deploy Bookies<a href="#deploy-bookies" class="hash-link" aria-label="Direct link to Deploy Bookies" title="Direct link to Deploy Bookies">​</a></h3><p>Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/" target="_blank" rel="noopener noreferrer">DaemonSet</a> or a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer">StatefulSet</a>.</p><blockquote><p>NOTE: <em>DaemonSet</em> vs <em>StatefulSet</em></p><p>A <em>DaemonSet</em> ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the
 cluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn&#x27;t require any external storage for Persistent
 Volumes.</p><p>A <em>StatefulSet</em> maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods
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diff --git a/content/docs/4.6.2/security/overview/index.html b/content/docs/4.6.2/security/overview/index.html
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diff --git a/content/docs/4.6.2/security/sasl/index.html b/content/docs/4.6.2/security/sasl/index.html
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diff --git a/content/docs/4.6.2/security/tls/index.html b/content/docs/4.6.2/security/tls/index.html
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diff --git a/content/docs/4.6.2/security/zookeeper/index.html b/content/docs/4.6.2/security/zookeeper/index.html
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diff --git a/content/docs/4.7.3/admin/autorecovery/index.html b/content/docs/4.7.3/admin/autorecovery/index.html
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diff --git a/content/docs/4.7.3/api/ledger-api/index.html b/content/docs/4.7.3/api/ledger-api/index.html
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diff --git a/content/docs/4.7.3/api/overview/index.html b/content/docs/4.7.3/api/overview/index.html
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href="/docs/4.7.3/development/protocol">Development</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/4.7.3/reference/config">Reference</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><span class="theme-doc-version-badge badge badge--secondary">Version: 4.7.3</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Deploying Apache BookKeeper on Kubernetes</h1></header><p>Apache BookKeeper can be easily deployed in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/container-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
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href="/docs/4.7.3/development/protocol">Development</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/4.7.3/reference/config">Reference</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><span class="theme-doc-version-badge badge badge--secondary">Version: 4.7.3</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Deploying Apache BookKeeper on Kubernetes</h1></header><p>Apache BookKeeper can be easily deployed in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/kubernetes-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
 remote zookeeper server:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl port-forward zk-0 </span><span class="token number" style="color:#36acaa">2181</span><span class="token plain">:2181</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ zk-shell localhost </span><span class="token number" style="color:#36acaa">2181</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deploy-bookies">Deploy Bookies<a href="#deploy-bookies" class="hash-link" aria-label="Direct link to Deploy Bookies" title="Direct link to Deploy Bookies">​</a></h3><p>Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/" target="_blank" rel="noopener noreferrer">DaemonSet</a> or a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer">StatefulSet</a>.</p><blockquote><p>NOTE: <em>DaemonSet</em> vs <em>StatefulSet</em></p><p>A <em>DaemonSet</em> ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the
 cluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn&#x27;t require any external storage for Persistent
 Volumes.</p><p>A <em>StatefulSet</em> maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods
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diff --git a/content/docs/4.7.3/reference/cli/index.html b/content/docs/4.7.3/reference/cli/index.html
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diff --git a/content/docs/4.7.3/reference/config/index.html b/content/docs/4.7.3/reference/config/index.html
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 <title data-rh="true">BookKeeper configuration | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.7.3/reference/config"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.7.3"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.7.3"><meta data-rh="true" name="docsearch:version" content="4.7.3"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.7.3"><meta data-rh="true" property="og:title" content="BookKeeper configuration | Apache BookKeeper"><meta data-rh="true" name="description" content="The table below lists parameters that you can set to configure bookies. All configuration takes place in the bk_server.conf file in the bookkeeper-server/conf directory of your BookKeeper installation."><meta data-rh="true" property="og:description" content="The table below lists parameters that you can set to configure bookies. All configuration takes place in the bk_server.conf file in the bookkeeper-server/conf directory of your BookKeeper installation."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.7.3/reference/config"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.7.3/reference/config" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.7.3/reference/config" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.7.3/security/overview/index.html b/content/docs/4.7.3/security/overview/index.html
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diff --git a/content/docs/4.7.3/security/sasl/index.html b/content/docs/4.7.3/security/sasl/index.html
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         </div>
       </footer>
       </div></div></div></footer></div>
-<script src="/assets/js/runtime~main.26cc152e.js"></script>
+<script src="/assets/js/runtime~main.94f37568.js"></script>
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diff --git a/content/docs/4.7.3/security/tls/index.html b/content/docs/4.7.3/security/tls/index.html
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diff --git a/content/docs/4.7.3/security/zookeeper/index.html b/content/docs/4.7.3/security/zookeeper/index.html
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+<script src="/assets/js/runtime~main.94f37568.js"></script>
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index d54ce68..718850a 100644
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in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/container-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
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href="/docs/4.8.2/development/protocol">Development</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/4.8.2/reference/config">Reference</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><span class="theme-doc-version-badge badge badge--secondary">Version: 4.8.2</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Deploying Apache BookKeeper on Kubernetes</h1></header><p>Apache BookKeeper can be easily deployed in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/kubernetes-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
 remote zookeeper server:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl port-forward zk-0 </span><span class="token number" style="color:#36acaa">2181</span><span class="token plain">:2181</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ zk-shell localhost </span><span class="token number" style="color:#36acaa">2181</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deploy-bookies">Deploy Bookies<a href="#deploy-bookies" class="hash-link" aria-label="Direct link to Deploy Bookies" title="Direct link to Deploy Bookies">​</a></h3><p>Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/" target="_blank" rel="noopener noreferrer">DaemonSet</a> or a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer">StatefulSet</a>.</p><blockquote><p>NOTE: <em>DaemonSet</em> vs <em>StatefulSet</em></p><p>A <em>DaemonSet</em> ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the
 cluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn&#x27;t require any external storage for Persistent
 Volumes.</p><p>A <em>StatefulSet</em> maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods
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diff --git a/content/docs/4.8.2/reference/cli/index.html b/content/docs/4.8.2/reference/cli/index.html
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diff --git a/content/docs/4.8.2/reference/config/index.html b/content/docs/4.8.2/reference/config/index.html
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 <title data-rh="true">BookKeeper configuration | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.8.2/reference/config"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.8.2"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.8.2"><meta data-rh="true" name="docsearch:version" content="4.8.2"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.8.2"><meta data-rh="true" property="og:title" content="BookKeeper configuration | Apache BookKeeper"><meta data-rh="true" name="description" content="The table below lists parameters that you can set to configure bookies. All configuration takes place in the bk_server.conf file in the bookkeeper-server/conf directory of your BookKeeper installation."><meta data-rh="true" property="og:description" content="The table below lists parameters that you can set to configure bookies. All configuration takes place in the bk_server.conf file in the bookkeeper-server/conf directory of your BookKeeper installation."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.8.2/reference/config"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.8.2/reference/config" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.8.2/reference/config" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.8.2/security/overview/index.html b/content/docs/4.8.2/security/overview/index.html
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diff --git a/content/docs/4.8.2/security/sasl/index.html b/content/docs/4.8.2/security/sasl/index.html
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         </div>
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       </div></div></div></footer></div>
-<script src="/assets/js/runtime~main.26cc152e.js"></script>
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diff --git a/content/docs/4.8.2/security/tls/index.html b/content/docs/4.8.2/security/tls/index.html
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diff --git a/content/docs/4.8.2/security/zookeeper/index.html b/content/docs/4.8.2/security/zookeeper/index.html
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in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/container-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
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href="/docs/4.9.2/development/protocol">Development</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/4.9.2/reference/config">Reference</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><span class="theme-doc-version-badge badge badge--secondary">Version: 4.9.2</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Deploying Apache BookKeeper on Kubernetes</h1></header><p>Apache BookKeeper can be easily deployed in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/kubernetes-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
 remote zookeeper server:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl port-forward zk-0 </span><span class="token number" style="color:#36acaa">2181</span><span class="token plain">:2181</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ zk-shell localhost </span><span class="token number" style="color:#36acaa">2181</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deploy-bookies">Deploy Bookies<a href="#deploy-bookies" class="hash-link" aria-label="Direct link to Deploy Bookies" title="Direct link to Deploy Bookies">​</a></h3><p>Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/" target="_blank" rel="noopener noreferrer">DaemonSet</a> or a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer">StatefulSet</a>.</p><blockquote><p>NOTE: <em>DaemonSet</em> vs <em>StatefulSet</em></p><p>A <em>DaemonSet</em> ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the
 cluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn&#x27;t require any external storage for Persistent
 Volumes.</p><p>A <em>StatefulSet</em> maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods
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diff --git a/content/docs/4.9.2/reference/cli/index.html b/content/docs/4.9.2/reference/cli/index.html
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diff --git a/content/docs/4.9.2/reference/config/index.html b/content/docs/4.9.2/reference/config/index.html
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 <title data-rh="true">BookKeeper configuration | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.9.2/reference/config"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.9.2"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.9.2"><meta data-rh="true" name="docsearch:version" content="4.9.2"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.9.2"><meta data-rh="true" property="og:title" content="BookKeeper configuration | Apache BookKeeper"><meta data-rh="true" name="description" content="The table below lists parameters that you can set to configure bookies. All configuration takes place in the bk_server.conf file in the bookkeeper-server/conf directory of your BookKeeper installation."><meta data-rh="true" property="og:description" content="The table below lists parameters that you can set to configure bookies. All configuration takes place in the bk_server.conf file in the bookkeeper-server/conf directory of your BookKeeper installation."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.9.2/reference/config"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.9.2/reference/config" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.9.2/reference/config" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.9.2/security/overview/index.html b/content/docs/4.9.2/security/overview/index.html
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       </div></div></div></footer></div>
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diff --git a/content/docs/4.9.2/security/tls/index.html b/content/docs/4.9.2/security/tls/index.html
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 <title data-rh="true">Encryption and Authentication using TLS | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/4.9.2/security/tls"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="4.9.2"><meta data-rh="true" name="docusaurus_tag" content="docs-default-4.9.2"><meta data-rh="true" name="docsearch:version" content="4.9.2"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-4.9.2"><meta data-rh="true" property="og:title" content="Encryption and Authentication using TLS | Apache BookKeeper"><meta data-rh="true" name="description" content="Apache BookKeeper allows clients and autorecovery daemons to communicate over TLS, although this is not enabled by default."><meta data-rh="true" property="og:description" content="Apache BookKeeper allows clients and autorecovery daemons to communicate over TLS, although this is not enabled by default."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/4.9.2/security/tls"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.9.2/security/tls" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/4.9.2/security/tls" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/4.9.2/security/zookeeper/index.html b/content/docs/4.9.2/security/zookeeper/index.html
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+<script src="/assets/js/runtime~main.94f37568.js"></script>
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class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/reference/config">Reference</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><span class="theme-doc-version-badge badge badge--secondary">Version: 4.17.0</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Deploying Apache BookKeeper on Kubernetes</h1></header><p>Apache BookKeeper can be easily deployed in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/container-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
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class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/reference/config">Reference</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><span class="theme-doc-version-badge badge badge--secondary">Version: 4.17.0</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Deploying Apache BookKeeper on Kubernetes</h1></header><p>Apache BookKeeper can be easily deployed in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/kubernetes-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
 remote zookeeper server:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl port-forward zk-0 </span><span class="token number" style="color:#36acaa">2181</span><span class="token plain">:2181</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ zk-shell localhost </span><span class="token number" style="color:#36acaa">2181</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deploy-bookies">Deploy Bookies<a href="#deploy-bookies" class="hash-link" aria-label="Direct link to Deploy Bookies" title="Direct link to Deploy Bookies">​</a></h3><p>Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/" target="_blank" rel="noopener noreferrer">DaemonSet</a> or a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer">StatefulSet</a>.</p><blockquote><p>NOTE: <em>DaemonSet</em> vs <em>StatefulSet</em></p><p>A <em>DaemonSet</em> ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the
 cluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn&#x27;t require any external storage for Persistent
 Volumes.</p><p>A <em>StatefulSet</em> maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods
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diff --git a/content/docs/next/api/ledger-adv-api/index.html b/content/docs/next/api/ledger-adv-api/index.html
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diff --git a/content/docs/next/api/ledger-api/index.html b/content/docs/next/api/ledger-api/index.html
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href="/docs/next/development/protocol">Development</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/next/reference/config">Reference</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><span class="theme-doc-version-badge badge badge--secondary">Version: Next</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Deploying Apache BookKeeper on Kubernetes</h1></header><p>Apache BookKeeper can be easily deployed in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/container-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
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href="/docs/next/development/protocol">Development</a></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--sublist-caret" aria-expanded="false" href="/docs/next/reference/config">Reference</a></div></li></ul></nav></div></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><span class="theme-doc-version-badge badge badge--secondary">Version: Next</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Deploying Apache BookKeeper on Kubernetes</h1></header><p>Apache BookKeeper can be easily deployed in <a href="https://kubernetes.io/" target="_blank" rel="noopener noreferrer">Kubernetes</a> clusters. The managed clusters on <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Container Engine</a> is the most convenient way.</p><p>The deployment method shown in this guide relies on <a href="http://yaml.org/" target="_blank" rel="noopener noreferrer">YAML</a> definitions for Kubernetes <a href="https://kubernetes.io/docs/resources-reference/v1.6/" target="_blank" rel="noopener noreferrer">resources</a>. The <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> subdirectory holds resource definitions for:</p><ul><li>A three-node ZooKeeper cluster</li><li>A BookKeeper cluster with a bookie runs on each node.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="setup-on-google-container-engine">Setup on Google Container Engine<a href="#setup-on-google-container-engine" class="hash-link" aria-label="Direct link to Setup on Google Container Engine" title="Direct link to Setup on Google Container Engine">​</a></h2><p>To get started, get source code of <a href="https://github.com/apache/bookkeeper/tree/master/deploy/kubernetes" target="_blank" rel="noopener noreferrer"><code>kubernetes</code></a> from github by git clone.</p><p>If you&#x27;d like to change the number of bookies,  or ZooKeeper nodes in your BookKeeper cluster, modify the <code>replicas</code> parameter in the <code>spec</code> section of the appropriate <a href="https://kubernetes.io/docs/concepts/workloads/controllers/deployment/" target="_blank" rel="noopener noreferrer"><code>Deployment</code></a> or <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer"><code>StatefulSet</code></a> resource.</p><p><a href="https://cloud.google.com/kubernetes-engine" target="_blank" rel="noopener noreferrer">Google Container Engine</a> (GKE) automates the creation and management of Kubernetes clusters in <a href="https://cloud.google.com/compute/" target="_blank" rel="noopener noreferrer">Google Compute Engine</a> (GCE).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites">​</a></h3><p>To get started, you&#x27;ll need:</p><ul><li>A Google Cloud Platform account, which you can sign up for at <a href="https://cloud.google.com" target="_blank" rel="noopener noreferrer">cloud.google.com</a></li><li>An existing Cloud Platform project</li><li>The <a href="https://cloud.google.com/sdk/downloads" target="_blank" rel="noopener noreferrer">Google Cloud SDK</a> (in particular the <a href="https://cloud.google.com/sdk/gcloud/" target="_blank" rel="noopener noreferrer"><code>gcloud</code></a> and <a href="https://kubernetes.io/docs/tasks/tools/" target="_blank" rel="noopener noreferrer"><code>kubectl</code></a> tools).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-new-kubernetes-cluster">Create a new Kubernetes cluster<a href="#create-a-new-kubernetes-cluster" class="hash-link" aria-label="Direct link to Create a new Kubernetes cluster" title="Direct link to Create a new Kubernetes cluster">​</a></h3><p>You can create a new GKE cluster using the <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" target="_blank" rel="noopener noreferrer"><code>container clusters create</code></a> command for <code>gcloud</code>. This command enables you to specify the number of nodes in the cluster, the machine types of those nodes, and more.</p><p>As an example, we&#x27;ll create a new GKE cluster for Kubernetes version <a href="https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v164" target="_blank" rel="noopener noreferrer">1.6.4</a> in the <a href="https://cloud.google.com/compute/docs/regions-zones/regions-zones#available" target="_blank" rel="noopener noreferrer">us-central1-a</a> zone. The cluster will be named <code>bookkeeper-gke-cluster</code> and will consist of three VMs, each using two locally attached SSDs and running on <a href="https://cloud.google.com/compute/docs/machine-types" target="_blank" rel="noopener noreferrer">n1-standard-8</a> machines. These SSDs will be used by Bookie instances, one for the BookKeeper journal and the other for storing the actual data.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> compute/zone us-central1-a</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud config </span><span class="token builtin class-name">set</span><span class="token plain"> project your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters create bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --machine-type</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">n1-standard-8 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --num-nodes</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">3</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --local-ssd-count</span><span class="token operator" style="color:#393A34">=</span><span class="token number" style="color:#36acaa">2</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --enable-kubernetes-alpha</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, bookies will run on all the machines that have locally attached SSD disks. In this example, all of those machines will have two SSDs, but you can add different types of machines to the cluster later. You can control which machines host bookie servers using <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels" target="_blank" rel="noopener noreferrer">labels</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dashboard">Dashboard<a href="#dashboard" class="hash-link" aria-label="Direct link to Dashboard" title="Direct link to Dashboard">​</a></h3><p>You can observe your cluster in the <a href="https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/" target="_blank" rel="noopener noreferrer">Kubernetes Dashboard</a> by downloading the credentials for your Kubernetes cluster and opening up a proxy to the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ gcloud container clusters get-credentials bookkeeper-gke-cluster </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --zone</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">us-central1-a </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  --project</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">your-project-name</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl proxy</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>By default, the proxy will be opened on port 8001. Now you can navigate to <a href="http://localhost:8001/ui" target="_blank" rel="noopener noreferrer">localhost:8001/ui</a> in your browser to access the dashboard. At first your GKE cluster will be empty, but that will change as you begin deploying.</p><p>When you create a cluster, your <code>kubectl</code> config in <code>~/.kube/config</code> (on MacOS and Linux) will be updated for you, so you probably won&#x27;t need to change your configuration. Nonetheless, you can ensure that <code>kubectl</code> can interact with your cluster by listing the nodes in the cluster:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get nodes</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If <code>kubectl</code> is working with your cluster, you can proceed to deploy ZooKeeper and Bookies.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper">​</a></h3><p>You <em>must</em> deploy ZooKeeper as the first component, as it is a dependency for the others.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl apply -f zookeeper.yaml</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Wait until all three ZooKeeper server pods are up and have the status <code>Running</code>. You can check on the status of the ZooKeeper pods at any time:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl get pods -l </span><span class="token assign-left variable" style="color:#36acaa">component</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">zookeeper</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">NAME      READY     STATUS             RESTARTS   AGE</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-0      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          18m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-1      </span><span class="token number" style="color:#36acaa">1</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">          17m</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">zk-2      </span><span class="token number" style="color:#36acaa">0</span><span class="token plain">/1       Running            </span><span class="token number" style="color:#36acaa">6</span><span class="token plain">          15m</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This step may take several minutes, as Kubernetes needs to download the Docker image on the VMs.</p><p>If you want to connect to one of the remote zookeeper server, you can use<a href="https://github.com/rgs1/zk_shell" target="_blank" rel="noopener noreferrer">zk-shell</a>, you need to forward a local port to the
 remote zookeeper server:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ kubectl port-forward zk-0 </span><span class="token number" style="color:#36acaa">2181</span><span class="token plain">:2181</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ zk-shell localhost </span><span class="token number" style="color:#36acaa">2181</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deploy-bookies">Deploy Bookies<a href="#deploy-bookies" class="hash-link" aria-label="Direct link to Deploy Bookies" title="Direct link to Deploy Bookies">​</a></h3><p>Once ZooKeeper cluster is Running, you can then deploy the bookies. You can deploy the bookies either using a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/" target="_blank" rel="noopener noreferrer">DaemonSet</a> or a <a href="https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/" target="_blank" rel="noopener noreferrer">StatefulSet</a>.</p><blockquote><p>NOTE: <em>DaemonSet</em> vs <em>StatefulSet</em></p><p>A <em>DaemonSet</em> ensures that all (or some) nodes run a pod of bookie instance. As nodes are added to the cluster, bookie pods are added automatically to them. As nodes are removed from the
 cluster, those bookie pods are garbage collected. The bookies deployed in a DaemonSet stores data on the local disks on those nodes. So it doesn&#x27;t require any external storage for Persistent
 Volumes.</p><p>A <em>StatefulSet</em> maintains a sticky identity for the pods that it runs and manages. It provides stable and unique network identifiers, and stable and persistent storage for each pod. The pods
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diff --git a/content/docs/next/reference/config/index.html b/content/docs/next/reference/config/index.html
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@@ -4,7 +4,7 @@
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 <title data-rh="true">BookKeeper configuration | Apache BookKeeper</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/docs/next/reference/config"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="current"><meta data-rh="true" name="docusaurus_tag" content="docs-default-current"><meta data-rh="true" name="docsearch:version" content="current"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-current"><meta data-rh="true" property="og:title" content="BookKeeper configuration | Apache BookKeeper"><meta data-rh="true" name="description" content="The table below lists parameters that you can set to configure bookies. All configuration takes place in the bk_server.conf file in the bookkeeper-server/conf directory of your BookKeeper installation."><meta data-rh="true" property="og:description" content="The table below lists parameters that you can set to configure bookies. All configuration takes place in the bk_server.conf file in the bookkeeper-server/conf directory of your BookKeeper installation."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/docs/next/reference/config"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/next/reference/config" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/docs/next/reference/config" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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diff --git a/content/docs/next/security/sasl/index.html b/content/docs/next/security/sasl/index.html
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 <title data-rh="true">Apache BookKeeper</title><meta data-rh="true" property="og:title" content="Apache BookKeeper"><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://bookkeeper.apache.org/releases"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docusaurus_tag" content="default"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docsearch:docusaurus_tag" content="default"><meta data-rh="true" name="description" content="Version 4.17.0 is the latest release of BookKeeper. The current stable version is 4.16.5."><meta data-rh="true" property="og:description" content="Version 4.17.0 is the latest release of BookKeeper. The current stable version is 4.16.5."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://bookkeeper.apache.org/releases"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/releases" hreflang="en"><link data-rh="true" rel="alternate" href="https://bookkeeper.apache.org/releases" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.49914aab.css">
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