k3s/cluster/gce/coreos/node.yaml

#cloud-config

write_files:
  - path: /run/configure-hostname.sh
    permissions: "0755"
    content: |
      #!/bin/bash -e
      set -x
      source /etc/kube-env

      hostnamectl set-hostname $(hostname | cut -f1 -d.)      
  - path: /run/setup-auth.sh
    permissions: "0755"
    content: |
      #!/bin/bash -e
      set -x
      source /etc/kube-env

      /usr/bin/mkdir -p /var/lib/kubelet
      cat > /var/lib/kubelet/kubeconfig << EOF
      apiVersion: v1
      kind: Config
      users:
      - name: kubelet
        user:
          token: ${KUBELET_TOKEN}
      clusters:
      - name: local
        cluster:
          insecure-skip-tls-verify: true
      contexts:
      - context:
          cluster: local
          user: kubelet
        name: service-account-context
      current-context: service-account-context
      EOF      

  - path: /run/config-kube-proxy.sh
    permissions: "0755"
    content: |
      #!/bin/bash -e
      set -x
      source /etc/kube-env

      /usr/bin/mkdir -p /var/lib/kube-proxy
      cat > /var/lib/kube-proxy/kubeconfig << EOF
      apiVersion: v1
      kind: Config
      users:
      - name: kube-proxy
        user:
          token: ${KUBE_PROXY_TOKEN}
      clusters:
      - name: local
        cluster:
          insecure-skip-tls-verify: true
      contexts:
      - context:
          cluster: local
          user: kube-proxy
        name: service-account-context
      current-context: service-account-context
      EOF      

coreos:
  units:
    - name: kube-env.service
      command: start
      content: |
        [Unit]
        Description=Fetch kubernetes-node-environment
        Requires=network-online.target
        After=network-online.target
        [Service]
        Type=oneshot
        RemainAfterExit=yes
        ExecStart=/usr/bin/curl --fail --silent --show-error \
        -H "X-Google-Metadata-Request: True" \
        -o /etc/kube-env \
        http://metadata.google.internal/computeMetadata/v1/instance/attributes/kube-env        

    - name: kubernetes-install-rkt.service
      command: start
      content: |
        [Unit]
        Description=Fetch Rocket
        Documentation=http://github.com/coreos/rkt
        Requires=network-online.target
        After=network-online.target
        [Service]
        Type=oneshot
        EnvironmentFile=/etc/kube-env
        ExecStartPre=/usr/bin/rm -rf /opt/rkt
        ExecStartPre=/usr/bin/mkdir -p /opt/rkt
        ExecStartPre=/usr/bin/mkdir -p /etc/rkt
        ExecStartPre=/usr/bin/wget \
        -O /opt/rkt/rkt-v${RKT_VERSION}.tar.gz \
        https://github.com/coreos/rkt/releases/download/v${RKT_VERSION}/rkt-v${RKT_VERSION}.tar.gz
        ExecStartPre=/usr/bin/tar xzvf /opt/rkt/rkt-v${RKT_VERSION}.tar.gz -C /opt --overwrite
        ExecStart=/usr/bin/mv /opt/rkt-v${RKT_VERSION} /opt/rkt/rkt        

    - name: kubernetes-install-minion.service
      command: start
      content: |
        [Unit]
        Description=Install Kubernetes Server
        Requires=network-online.target
        After=network-online.target
        Requires=kube-env.service
        After=kube-env.service
        [Service]
        Type=oneshot
        RemainAfterExit=yes
        EnvironmentFile=/etc/kube-env
        ExecStartPre=/usr/bin/mkdir -p /opt/kubernetes/pkg
        ExecStartPre=/usr/bin/curl --location --create-dirs --output /opt/kubernetes/pkg/kubernetes-server-linux-amd64.tar.gz ${SERVER_BINARY_TAR_URL}
        ExecStart=/usr/bin/tar xf /opt/kubernetes/pkg/kubernetes-server-linux-amd64.tar.gz -C /opt --overwrite        

    - name: kubernetes-preparation.service
      command: start
      content: |
        [Unit]
        Description=Configure Node For Kubernetes service
        Requires=kubernetes-install-minion.service
        After=kubernetes-install-minion.service
        Requires=kubernetes-install-rkt.service
        After=kubernetes-install-rkt.service
        [Service]
        Type=oneshot
        RemainAfterExit=yes
        EnvironmentFile=/etc/kube-env
        # TODO(dawnchen): Push this to separate write-files
        ExecStart=/run/configure-hostname.sh        

    - name: kubelet.service
      command: start
      content: |
        [Unit]
        Description=Run Kubelet service
        Requires=kubernetes-preparation.service
        After=kubernetes-preparation.service
        [Service]
        EnvironmentFile=/etc/kube-env
        ExecStartPre=/usr/bin/mkdir -p /etc/kubernetes/manifests
        ExecStartPre=/run/setup-auth.sh
        ExecStart=/opt/kubernetes/server/bin/kubelet \
        --api-servers=https://${KUBERNETES_MASTER_NAME}.c.${PROJECT_ID}.internal \
        --config=/etc/kubernetes/manifests \
        --allow-privileged=False \
        --v=2 \
        --cluster-dns=10.0.0.10 \
        --cluster-domain=cluster.local \
        --logtostderr=true \
        --container-runtime=${KUBERNETES_CONTAINER_RUNTIME} \
        --rkt-path=/opt/rkt/rkt/rkt
        Restart=always
        RestartSec=10        

    - name: kube-proxy.service
      command: start
      content: |
        [Unit]
        Description=Start Kube-proxy service as Daemon
        Requires=kubernetes-install-minion.service
        After=kubernetes-install-minion.service
        Requires=kubernetes-install-rkt.service
        After=kubernetes-install-rkt.service
        [Service]
        EnvironmentFile=/etc/kube-env
        ExecStartPre=/run/config-kube-proxy.sh
        ExecStart=/opt/kubernetes/server/bin/kube-proxy \
        --master=https://${KUBERNETES_MASTER_NAME}.c.${PROJECT_ID}.internal \
        --kubeconfig=/var/lib/kube-proxy/kubeconfig \
        --v=2 \
        --logtostderr=true
        Restart=always
        RestartSec=10        

    - name: rkt-metadata.socket
      command: start
      content: |
        [Unit]
        Description=rkt metadata service socket
        PartOf=rkt-metadata.service
        Requires=kubernetes-install-rkt.service
        After=kubernetes-install-rkt.service
        [Socket]
        ListenStream=/run/rkt/metadata-svc.sock
        SocketMode=0660
        SocketUser=root
        SocketGroup=root
        RemoveOnStop=true        

    - name: rkt-metadata.service
      command: start
      content: |
        [Unit]
        Description=rkt metadata service
        Documentation=http://github.com/coreos/rkt
        Requires=rkt-metadata.socket
        After=network.target rkt-metadata.socket
        Requires=kubernetes-install-rkt.service
        After=kubernetes-install-rkt.service
        [Service]
        EnvironmentFile=/etc/kube-env
        ExecStart=/opt/rkt/rkt/rkt metadata-service