coreos-cluster/user-data.sample at master · PlanitarInc/coreos-cluster · GitHub

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#cloud-config

coreos:
  etcd:
      # generate a new token for each unique cluster from https://discovery.etcd.io/new
      # WARNING: replace each time you 'vagrant destroy'
      #discovery: https://discovery.etcd.io/<token>
      addr: $public_ipv4:4001
      peer-addr: $public_ipv4:7001
  units:
    - name: etcd.service
      command: start
    - name: fleet.service
      command: start
      runtime: no
      content: |
        [Unit]
        Description=fleet

        [Service]
        Environment=FLEET_PUBLIC_IP=$public_ipv4
        ExecStart=/usr/bin/fleet
    - name: docker-tcp.socket
      command: start
      enable: true
      content: |
        [Unit]
        Description=Docker Socket for the API

        [Socket]
        ListenStream=2375
        Service=docker.service
        BindIPv6Only=both

        [Install]
        WantedBy=sockets.target
    - name: skydns.service
      command: start
      content: |
        [Unit]
        Description=SkyDNS Service
        After=docker.service
        Requires=docker.service

        [Service]
        TimeoutStartSec=0
        ExecStartPre=/usr/bin/docker pull planitar/skydns
        ExecStartPre=-/usr/bin/docker rm -f skydns
        ExecStart=/bin/bash -c ' \
          DOCKER_IP=`ifconfig docker0 | sed -n "s/^ *inet \([0-9.]*\) .*$/\1/p"`; \
          /usr/bin/docker run --name skydns -p $DOCKER_IP:53:53/udp \
            planitar/skydns -addr 0.0.0.0:53 -nameservers 8.8.8.8:53,8.8.4.4:53 \
            -machines "http://$DOCKER_IP:4001" -domain dev.plntr. -verbose; \
        '
        ExecStartPost=/bin/bash -c ' \
          PUBLIC_IP=`ifconfig eth0 | sed -n "s/^ *inet \([0-9.]*\) .*$/\1/p"`; \
          DOCKER_IP=`ifconfig docker0 | sed -n "s/^ *inet \([0-9.]*\) .*$/\1/p"`; \
          etcdctl set /skydns/plntr/dev/dns/ns "{\\"host\\":\\"8.8.8.8\\"}"; \
          etcdctl set /skydns/plntr/dev/dns/ns2 "{\\"host\\":\\"8.8.4.4\\"}"; \
          etcdctl set /skydns/plntr/dev/host/%H "{\\"host\\":\\"$PUBLIC_IP\\"}"; \
          { \
            echo "search dev.plntr"; \
            echo "nameserver $DOCKER_IP"; \
          } >/tmp/skydns.resolv.conf; \
          sudo mv -b -S "~orig" /tmp/skydns.resolv.conf /etc/resolv.conf; \
        '
        ExecStop=/usr/bin/docker rm -f skydns
        ExecStopPost=/bin/bash -c 'sudo mv /etc/resolv.conf~orig /etc/resolv.conf'
        Restart=always
    - name: monitord.service
      command: start
      content: |
        [Unit]
        Description=Monitoring Service
        Requires=docker.service
        Requires=skydns.service
        After=skydns.service

        [Service]
        TimeoutStartSec=0
        ExecStartPre=/usr/bin/docker pull planitar/monitord
        ExecStartPre=-/usr/bin/docker rm -f monitord
        ExecStart=/bin/bash -c ' \
          /usr/bin/docker run --net host --name monitord planitar/monitord; \
        '
        ExecStartPost=/bin/bash -c ' \
          DOCKER_IP=`ifconfig docker0 | sed -n "s/^ *inet \([0-9.]*\) .*$/\1/p"`; \
          etcdctl set /skydns/plntr/dev/monitord/%H "{ \\"host\\": \\"$DOCKER_IP\\" }"; \
        '
        ExecStop=/usr/bin/docker rm -f monitord
        Restart=always