Core-os

• https://coreos.com/docs/running-coreos/platforms/libvirt/

docker cluster

• user-data

...
...
...
- name: httpd.service
      command: start
      enable: true
      content: |
        [Unit]
        Description=httpd
        Requires=docker.service
        After=docker.service

        [Service]
        ExecStart=/usr/bin/docker run -d -p 80:80 --name  own-httpd httpd

        [Install]
        WantedBy=multi-user.target

---

temp

cat user-data

#cloud-config

---
coreos:
  etcd:
    discovery: https://discovery.etcd.io/d90bc0dcab88d7b5e5e7504ed1df1890
    addr: $public_ipv4:4001
    peer-addr: $public_ipv4:7001
  etcd2:
    advertise-client-urls: http://$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/d90bc0dcab88d7b5e5e7504ed1df1890
  fleet:
    public-ip: $public_ipv4
  flannel:
    interface: $public_ipv4
  units:
  - name: etcd.service
    command: start
  - name: fleet.service
    command: start