ceph-ansible/roles/ceph-mon/tasks/docker.yml

---
- name: set config and keys paths
  set_fact:
    ceph_config_keys:
      - /etc/ceph/ceph.client.admin.keyring
      - /etc/ceph/ceph.conf
      - /etc/ceph/monmap
      - /etc/ceph/ceph.mon.keyring

- name: install docker-py
  pip: >
    name=docker-py
    version=1.1.0 # https://github.com/ansible/ansible-modules-core/issues/1227

- name: stat for Ceph config and keys
  stat: >
    path={{ item }}
  with_items: ceph_config_keys
  ignore_errors: true
  register: statconfig

- name: try to fetch Ceph config and keys
  copy: >
    src=fetch/docker_mon_files/"{{ item }}"
    dest=/etc/ceph/
    owner=root
    group=root
    mode=600
  with_together:
    - ceph_config_keys
    - statconfig.results
  when: item.1.stat.exists == False

- name: run the Ceph Monitor docker image
  docker: >
    image="{{ ceph_mon_docker_username }}/{{ ceph_mon_docker_imagename }}"
    name=ceph-{{ ansible_hostname }}
    net=host
    state=running
    env="MON_NAME=ceph-{{ ansible_hostname }},MON_IP={{ hostvars[inventory_hostname]['ansible_' + ceph_mon_docker_interface]['ipv4']['address'] }},CEPH_DAEMON=MON, CEPH_PUBLIC_NETWORK={{ ceph_mon_docker_subnet }}"
    volumes="/var/lib/ceph:/var/lib/ceph,/etc/ceph:/etc/ceph"

- name: ensure ceph_mon service is running
  docker: >
    image="{{ ceph_mon_docker_username }}/{{ ceph_mon_docker_imagename }}"
    name="ceph-{{ ansible_hostname }}"
    ports=6789:6789
    detach=yes
    state=running

- name: collect Ceph files to the Ansible server
  fetch: >
    src={{ item }}
    dest=fetch/docker_mon_files/{{ item }}
    flat=yes
  with_items:
    - /etc/ceph/ceph.client.admin.keyring
    - /etc/ceph/ceph.conf
    - /etc/ceph/monmap
    - /etc/ceph/ceph.mon.keyring
    - /var/lib/ceph/bootstrap-osd/ceph.keyring
    - /var/lib/ceph/bootstrap-rgw/ceph.keyring
    - /var/lib/ceph/bootstrap-mds/ceph.keyring