user_data.yml

#cloud-config

hostname: ${name}

ssh_authorized_keys:
${ssh_keys}

write_files:
  - path: /etc/systemd/journald.conf
    permissions: 0644
    content: |
      [Journal]
      SystemMaxUse=50M
      RuntimeMaxUse=50M

coreos:
  etcd2:
    advertise-client-urls: http://${public_ip}:2379
    initial-advertise-peer-urls: http://${public_ip}:2380
    listen-client-urls: http://0.0.0.0:2379
    listen-peer-urls: http://${public_ip}:2380
    initial-cluster-state: new
    initial-cluster: ${etcd2_initial_cluster}
  units:
    - name: static.network
      command: start
      content: |
        [Match]
        # Name=eth0
        MACAddress=52:54:00:00:00:${i}

        [Network]
        Address=${public_ip}/24
        DNS=192.168.10.254
        Gateway=192.168.10.254
    - name: cbr0.netdev
      command: start
      content: |
        [NetDev]
        Kind=bridge
        Name=cbr0
    - name: cbr0.network
      command: start
      content: |
        [Match]
        Name=cbr0

        [Network]
        Address=${NODE_CONTAINER_SUBNETS[$i]}

        [Route]
        Destination=${CONTAINER_SUBNET}
    - name: cbr0-interface.network
      command: start
      content: |
        [Match]
        # Name=eth1
        MACAddress=52:54:00:00:01:${i}

        [Network]
        Bridge=cbr0
    - name: nat.service
      command: start
      content: |
        [Unit]
        Description=NAT non container traffic

        [Service]
        ExecStart=/usr/sbin/iptables -w -t nat -A POSTROUTING -o eth0 -j MASQUERADE ! -d ${CONTAINER_SUBNET}
        RemainAfterExit=yes
        Type=oneshot
    - name: etcd2.service
      command: start
      drop-ins:
        - name: 10-override-name.conf
          content: |
            [Service]
            Environment=ETCD_NAME=%H
    - name: docker.service
      command: start
      drop-ins:
        - name: 50-opts.conf
          content: |
            [Service]
            Environment='DOCKER_OPTS=--bridge=cbr0 --iptables=false'
    - name: docker-tcp.socket
      command: start
      enable: yes
      content: |
        [Unit]
        Description=Docker Socket for the API

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

        [Install]
        WantedBy=sockets.target
    - name: opt-kubernetes.mount
      command: start
      content: |
        [Unit]
        ConditionVirtualization=|vm

        [Mount]
        What=kubernetes
        Where=/opt/kubernetes
        Options=ro,trans=virtio,version=9p2000.L
        Type=9p
  update:
    group: ${COREOS_CHANNEL:-alpha}
    reboot-strategy: off

$( [[ ${type} =~ "master" ]] && render-template "$ROOT/user_data_master.yml" )
$( [[ ${type} =~ "node" ]] && render-template "$ROOT/user_data_minion.yml" )