user-data

#cloud-config

---
coreos:
  etcd2:
    advertise-client-urls: http://$public_ipv4:2379
    initial-advertise-peer-urls: http://$private_ipv4:2380
    listen-client-urls: http://0.0.0.0:2379,http://0.0.0.0:4001
    listen-peer-urls: http://$private_ipv4:2380,http://$private_ipv4:7001
    discovery: https://discovery.etcd.io/d56dee41252931050fbbfca20208c913
  fleet:
    public-ip: "$public_ipv4"
  flannel:
    interface: "$public_ipv4"
  units:
  - name: etcd2.service
    command: start
  - name: fleet.service
    command: start
  - 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: docker.service
    drop-ins:
    - name: 10-experimental.conf
      content: |-
        [Service]
        Environment="DOCKER_OPTS='--experimental'"
  - name: swap.service
    command: start
    content: |
      [Unit]
      Description=Turn on swap

      [Service]
      Type=oneshot
      Environment="SWAP_PATH=/var/vm" "SWAP_FILE=swapfile1"
      ExecStartPre=-/usr/bin/rm -rf ${SWAP_PATH}
      ExecStartPre=/usr/bin/mkdir -p ${SWAP_PATH}
      ExecStartPre=/usr/bin/touch ${SWAP_PATH}/${SWAP_FILE}
      ExecStartPre=/bin/bash -c "fallocate -l 4096m ${SWAP_PATH}/${SWAP_FILE}"
      ExecStartPre=/usr/bin/chmod 600 ${SWAP_PATH}/${SWAP_FILE}
      ExecStartPre=/usr/sbin/mkswap ${SWAP_PATH}/${SWAP_FILE}
      ExecStartPre=/usr/sbin/sysctl vm.swappiness=10
      ExecStart=/sbin/swapon ${SWAP_PATH}/${SWAP_FILE}
      ExecStop=/sbin/swapoff ${SWAP_PATH}/${SWAP_FILE}
      ExecStopPost=-/usr/bin/rm -rf ${SWAP_PATH}
      RemainAfterExit=true

      [Install]
      WantedBy=multi-user.target
write_files:
- path: "/etc/sysctl.d/vm.conf"
  permissions: 420
  content: |
    vm.max_map_count = 262144