Ansible node template for Torus installation as a Volume Plugin

k8s-node.j2

#cloud-config
write-files:
  - path: /opt/bin/wupiao
    permissions: '0755'
    content: |
      #!/bin/bash
      # [w]ait [u]ntil [p]ort [i]s [a]ctually [o]pen
      [ -n "$1" ] && [ -n "$2" ] && while ! curl --output /dev/null \
        --silent --head --fail \
        http://${1}:${2}; do sleep 1 && echo -n .; done;
      exit $?
  - path: /etc/modules-load.d/nbd.conf
    content: nbd
  - path: /opt/bin/gettorus
    permissions: '0755'
    content: |
      #!/bin/bash
      /usr/bin/mkdir -p /etc/kubernetes/volumeplugins/coreos.com~torus
      /usr/bin/curl -L https://github.com/coreos/torus/releases/download/v0.1.1/torus_v0.1.1_linux_amd64.tar.gz \
      | tar -xzO torus_v0.1.1_linux_amd64/torusblk --strip-components 1 \
      > /etc/kubernetes/volumeplugins/coreos.com~torus/torus
      /usr/bin/chmod +x /etc/kubernetes/volumeplugins/coreos.com~torus/torus
      exit $?
coreos:
  etcd2:
    listen-client-urls: http://0.0.0.0:2379,http://0.0.0.0:4001
    advertise-client-urls: http://0.0.0.0:2379,http://0.0.0.0:4001
    initial-cluster: master=http://{{ k8s_master.default_ip }}:2380
    proxy: on
  fleet:
    metadata: "role=node"
  units:
    - name: systemd-modules-load.service
      command: restart
    - name: etcd2.service
      command: start
    - name: fleet.service
      command: start
    - name: flanneld.service
      command: start
    - name: docker.service
      drop-ins:
        - name: 40-flannel.conf
          content: |
            [Unit]
            Requires=flanneld.service
            After=flanneld.service
      command: start
    - name: setup-network-environment.service
      command: start
      content: |
        [Unit]
        Description=Setup Network Environment
        Documentation=https://github.com/kelseyhightower/setup-network-environment
        Requires=network-online.target
        After=network-online.target
        [Service]
        ExecStartPre=-/usr/bin/mkdir -p /opt/bin
        ExecStartPre=/usr/bin/curl -L -o /opt/bin/setup-network-environment -z /opt/bin/setup-network-environment https://github.com/kelseyhightower/setup-network-environment/releases/download/v1.0.0/setup-network-environment
        ExecStartPre=/usr/bin/chmod +x /opt/bin/setup-network-environment
        ExecStart=/opt/bin/setup-network-environment
        RemainAfterExit=yes
        Type=oneshot
    - name: kube-proxy.service
      command: start
      content: |
        [Unit]
        Description=Kubernetes Proxy
        Documentation=https://github.com/GoogleCloudPlatform/kubernetes
        Requires=setup-network-environment.service
        After=setup-network-environment.service
        [Service]
        ExecStartPre=/usr/bin/curl -L -o /opt/bin/kube-proxy -z /opt/bin/kube-proxy https://storage.googleapis.com/kubernetes-release/release/{{k8s_version}}/bin/linux/amd64/kube-proxy
        ExecStartPre=/usr/bin/chmod +x /opt/bin/kube-proxy
        # wait for kubernetes master to be up and ready
        ExecStartPre=/opt/bin/wupiao {{ k8s_master.default_ip }} 8080
        ExecStart=/opt/bin/kube-proxy \
        --master={{ k8s_master.default_ip }}:8080 \
        --logtostderr=true
        Restart=always
        RestartSec=10
    - name: kube-kubelet.service
      command: start
      content: |
        [Unit]
        Description=Kubernetes Kubelet
        Documentation=https://github.com/GoogleCloudPlatform/kubernetes
        Requires=setup-network-environment.service
        After=setup-network-environment.service
        [Service]
        EnvironmentFile=/etc/network-environment
        ExecStartPre=/usr/bin/curl -L -o /opt/bin/kubelet -z /opt/bin/kubelet https://storage.googleapis.com/kubernetes-release/release/{{k8s_version}}/bin/linux/amd64/kubelet
        ExecStartPre=/usr/bin/chmod +x /opt/bin/kubelet
        # Install Torus
        ExecStartPre=/opt/bin/gettorus
        # wait for kubernetes master to be up and ready
        ExecStartPre=/opt/bin/wupiao {{ k8s_master.default_ip }} 8080
        ExecStart=/opt/bin/kubelet \
        --address=0.0.0.0 \
        --port=10250 \
        --cluster-dns=10.100.0.10 \
        --cluster-domain=cluster.local \
        --hostname-override=${DEFAULT_IPV4} \
        --api-servers={{ k8s_master.default_ip }}:8080 \
        --allow-privileged=true \
        --logtostderr=true \
        --cadvisor-port=4194 \
        --healthz-bind-address=0.0.0.0 \
        --healthz-port=10248 \
        --volume-plugin-dir=/etc/kubernetes/volumeplugins
        Restart=always
        RestartSec=10
  update:
    group: beta
    reboot-strategy: best-effort