gistfile1.txt

#cloud-config

hostname: core0
ssh_authorized _keys:
    - ssh-rsa AAAAB3NzaC1yc2...
coreos:
  etcd:
    # generate a new token for each unique cluster from https://discovery.etcd.io/new
    name: core0
    discovery: https://discovery.etcd.io/dead0b52c8704ad95ac9681b4550247e
    addr: 192.168.12.10:4001
    peer-addr: 192.168.12.10:7001
    bind-addr: 0.0.0.0:4001
  units:
    - name: etcd.service
      command: start
    - name: fleet.service
      command: start
    - name: docker-tcp.socket
      command: start
      content: |
        [Unit]
        Description=Docker Socket for the API

        [Socket]
        ListenStream=4243
        Service=docker.service
        BindIPv6Only=both

        [Install]
        WantedBy=sockets.target
    - name: enable-docker-tcp.service
      command: start
      content: |
        [Unit]
        Description=Enable the Docker Socket for the API

        [Service]
        Type=oneshot
        ExecStart=/usr/bin/systemctl enable docker-tcp.socket