docker-only-with-persistent-storage.txt

#cloud-config

hostname: containerLand
coreos:
  units:
    - name: docker-tcp.socket
      command: start
      enable: true
      content: |
        [Unit]
        Description=Docker Socket for the API

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

        [Install]
        WantedBy=sockets.target

    - name: format-persistent-rkthdd.service
      command: start
      content: |
        [Unit]
        Description=Formats the persistent drive (if not formated yet).
        [Service]
        Type=oneshot
        RemainAfterExit=yes
        ExecStart=/bin/sh -c '/usr/sbin/blkid -pi /dev/disk/by-label/rkthdd | \
          grep TYPE= || /usr/sbin/mkfs.ext4 /dev/disk/by-label/rkthdd'
    - name: persistent-rkthdd.mount
      command: start
      content: |
        [Unit]
        Description=Mount persistent-rkthdd to /var/lib/docker
        Requires=format-persistent-rkthdd.service docker.service rkt-metadata.socket
        After=format-persistent-rkthdd.service
        Before=docker.service rkt-metadata.socket
        [Mount]
        What=/dev/disk/by-label/rkthdd
        Where=/persistent/rkthdd
        Type=ext4
    - name: persistent-rkthdd-checks.service
      command: start
      content: |
        [Unit]
        Description=prepare for /var/lib/{docker,rkt}
        Requires=persistent-rkthdd.mount
        After=persistent-rkthdd.mount
        [Service]
        Type=oneshot
        RemainAfterExit=yes
        ExecStart=/bin/sh -c '[[ -d /persistent/rkthdd/docker ]] || mkdir -p /persistent/rkthdd/docker'
        ExecStart=/bin/sh -c '[[ -d /persistent/rkthdd/rkt ]] || mkdir -p /persistent/rkthdd/rkt'
    - name: var-lib-docker.mount
      command: start
      content: |
        [Unit]
        Description=Binds /persistent/rkthdd/docker to /var/lib/docker
        After=persistent-rkthdd-checks.service
        Requires=persistent-rkthdd-checks.service docker.service
        Before=docker.service
        [Mount]
        Before=docker.service
        What=/persistent/rkthdd/docker
        Where=/var/lib/docker
        Type=none
        Options=bind
    - name: var-lib-rkt.mount
      command: start
      content: |
        [Unit]
        Description=Binds /persistent/rkthdd/rkt to /var/lib/rkt
        Requires=persistent-rkthdd-checks.service rkt-metadata.socket
        After=persistent-rkthdd-checks.service
        Before=rkt-metadata.socket
        [Mount]
        What=/persistent/rkthdd/rkt
        Where=/var/lib/rkt
        Type=none
        Options=bind