add hugegraph-computer quick start
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+## HugeGraph-Computer Quick Start
+
+### 1 Overviews
+
+HugeGraph-Computer is a large-scale graph computing system, basic on disk/memory & integrate with graph database HugeGraph.
+
+### 2 Install hugegraph-computer CRD
+
+```bash
+# Kubernetes version >= v1.16
+kubectl apply -f https://raw.githubusercontent.com/apapche/hugegraph-computer/master/computer-k8s-operator/manifest/hugegraph-computer-crd.v1.yaml
+
+# Kubernetes version < v1.16
+kubectl apply -f https://raw.githubusercontent.com/apapche/hugegraph-computer/master/computer-k8s-operator/manifest/hugegraph-computer-crd.v1beta1.yaml
+```
+
+### 3 Show CRD
+
+```bash
+kubectl get crd
+
+NAME CREATED AT
+hugegraphcomputerjobs.hugegraph.baidu.com 2021-09-16T08:01:08Z
+```
+
+### 4 Install hugegraph-computer-operator&etcd-server
+
+```bash
+kubectl apply -f https://raw.githubusercontent.com/apapche/hugegraph-computer/master/computer-k8s-operator/manifest/hugegraph-computer-operator.yaml
+```
+
+### 5 Wait for hugegraph-computer-operator&etcd-server deployment to complete
+
+```bash
+kubectl get pod -n hugegraph-computer-operator-system
+
+NAME READY STATUS RESTARTS AGE
+hugegraph-computer-operator-controller-manager-58c5545949-jqvzl 1/1 Running 0 15h
+hugegraph-computer-operator-etcd-28lm67jxk5 1/1 Running 0 15h
+```
+
+### 6 Submit job
+
+```yaml
+cat <<EOF | kubectl apply --filename -
+apiVersion: hugegraph.baidu.com/v1
+kind: HugeGraphComputerJob
+metadata:
+ namespace: hugegraph-computer-system
+ name: &jobName pagerank-sample
+spec:
+ jobId: *jobName
+ algorithmName: page_rank
+ image: hugegraph/hugegraph-builtin-algorithms:latest # algorithm image url
+ jarFile: /opt/jars/hugegraph-builtin-algorithms.jar
+ pullPolicy: Always
+ workerCpu: "4"
+ workerMemory: "4Gi"
+ workerInstances: 5
+ computerConf:
+ job.partitions_count: "20"
+ algorithm.params_class: com.baidu.hugegraph.computer.algorithm.centrality.pagerank.PageRankParams
+ hugegraph.url: http://${hugegraph-server-host}:${hugegraph-server-port} # hugegraph server url
+ hugegraph.name: hugegraph
+EOF
+```
+
+### 7 Show job
+
+```bash
+kubectl get hcjob/pagerank-sample -n hugegraph-computer-system
+
+NAME JOBID JOBSTATUS
+pagerank-sample pagerank-sample RUNNING
+```
+
+### 8 Show log of running nodes
+
+```bash
+# Show the master log
+kubectl logs -l component=pagerank-sample-master -n hugegraph-computer-system
+
+# Show the worker log
+kubectl logs -l component=pagerank-sample-worker -n hugegraph-computer-system
+```
+
+### 9 Show diagnostic log of a job
+
+> NOTE: diagnostic log exist only when the job fails, and it will only be saved for one hour.
+
+```bash
+kubectl get event --field-selector reason=ComputerJobFailed --field-selector involvedObject.name=pagerank-sample -n hugegraph-computer-system
+```
+
+### 10 Show success event of a job
+
+> NOTE: it will only be saved for one hour
+
+```bash
+kubectl get event --field-selector reason=ComputerJobSucceed --field-selector involvedObject.name=pagerank-sample -n hugegraph-computer-system
+```
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