| #!/usr/bin/env bash |
| |
| # Copyright 2014 The Kubernetes Authors. |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| MASTER_ADDRESS=${1:-"8.8.8.18"} |
| NODE_ADDRESS=${2:-"8.8.8.20"} |
| DNS_SERVER_IP=${3:-"192.168.3.100"} |
| DNS_DOMAIN=${4:-"cluster.local"} |
| KUBECONFIG_DIR=${KUBECONFIG_DIR:-/opt/kubernetes/cfg} |
| |
| # Generate a kubeconfig file |
| cat <<EOF > "${KUBECONFIG_DIR}/kubelet.kubeconfig" |
| apiVersion: v1 |
| kind: Config |
| clusters: |
| - cluster: |
| server: http://${MASTER_ADDRESS}:8080/ |
| name: local |
| contexts: |
| - context: |
| cluster: local |
| name: local |
| current-context: local |
| EOF |
| |
| cat <<EOF >/opt/kubernetes/cfg/kubelet |
| # --logtostderr=true: log to standard error instead of files |
| KUBE_LOGTOSTDERR="--logtostderr=true" |
| |
| # --v=0: log level for V logs |
| KUBE_LOG_LEVEL="--v=4" |
| |
| # --address=0.0.0.0: The IP address for the Kubelet to serve on (set to 0.0.0.0 for all interfaces) |
| NODE_ADDRESS="--address=${NODE_ADDRESS}" |
| |
| # --port=10250: The port for the Kubelet to serve on. Note that "kubectl logs" will not work if you set this flag. |
| NODE_PORT="--port=10250" |
| |
| # --hostname-override="": If non-empty, will use this string as identification instead of the actual hostname. |
| NODE_HOSTNAME="--hostname-override=${NODE_ADDRESS}" |
| |
| # Path to a kubeconfig file, specifying how to connect to the API server. |
| KUBELET_KUBECONFIG="--kubeconfig=${KUBECONFIG_DIR}/kubelet.kubeconfig" |
| |
| # --allow-privileged=false: If true, allow containers to request privileged mode. [default=false] |
| KUBE_ALLOW_PRIV="--allow-privileged=false" |
| |
| # DNS info |
| KUBELET__DNS_IP="--cluster-dns=${DNS_SERVER_IP}" |
| KUBELET_DNS_DOMAIN="--cluster-domain=${DNS_DOMAIN}" |
| |
| # Add your own! |
| KUBELET_ARGS="" |
| EOF |
| |
| KUBELET_OPTS=" \${KUBE_LOGTOSTDERR} \\ |
| \${KUBE_LOG_LEVEL} \\ |
| \${NODE_ADDRESS} \\ |
| \${NODE_PORT} \\ |
| \${NODE_HOSTNAME} \\ |
| \${KUBELET_KUBECONFIG} \\ |
| \${KUBE_ALLOW_PRIV} \\ |
| \${KUBELET__DNS_IP} \\ |
| \${KUBELET_DNS_DOMAIN} \\ |
| \$KUBELET_ARGS" |
| |
| cat <<EOF >/usr/lib/systemd/system/kubelet.service |
| [Unit] |
| Description=Kubernetes Kubelet |
| After=docker.service |
| Requires=docker.service |
| |
| [Service] |
| EnvironmentFile=-/opt/kubernetes/cfg/kubelet |
| ExecStart=/opt/kubernetes/bin/kubelet ${KUBELET_OPTS} |
| Restart=on-failure |
| KillMode=process |
| RestartSec=15s |
| |
| [Install] |
| WantedBy=multi-user.target |
| EOF |
| |
| systemctl daemon-reload |
| systemctl enable kubelet |
| systemctl restart kubelet |