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

---
- name: check if monitor initial keyring already exists
  command: >
    {{ _container_exec_cmd | default('') }} ceph --cluster {{ cluster }} --name mon. -k
    /var/lib/ceph/mon/{{ cluster }}-{{ hostvars[groups[mon_group_name][0] if running_mon is undefined else running_mon]['ansible_hostname'] }}/keyring
    auth get-key mon.    
  register: initial_mon_key
  run_once: True
  delegate_to: "{{ groups[mon_group_name][0] if running_mon is undefined else running_mon }}"
  when: ceph_current_status.fsid is defined

- name: generate monitor initial keyring
  command: >
    {{ hostvars[groups[mon_group_name][0] if running_mon is undefined else running_mon]['discovered_interpreter_python'] }} -c "import os ; import struct ;
    import time; import base64 ; key = os.urandom(16) ;
    header = struct.pack('<hiih',1,int(time.time()),0,len(key)) ;
    print(base64.b64encode(header + key).decode())"    
  register: monitor_keyring
  run_once: True
  delegate_to: "{{ groups[mon_group_name][0] if running_mon is undefined else running_mon }}"
  when:
    - initial_mon_key.skipped is defined
    - ceph_current_status.fsid is undefined

- name: get initial keyring when it already exists
  set_fact:
    monitor_keyring: "{{ initial_mon_key.stdout if monitor_keyring.skipped is defined else monitor_keyring.stdout if initial_mon_key.skipped is defined }}"
  when: initial_mon_key is not skipped or monitor_keyring is not skipped

- name: create monitor initial keyring
  ceph_key:
    name: mon.
    state: present
    dest: "/var/lib/ceph/tmp/"
    secret: "{{ monitor_keyring }}"
    cluster: "{{ cluster }}"
    caps:
      mon: allow *
    import_key: False
    owner: "{{ ceph_uid if containerized_deployment else 'ceph' }}"
    group: "{{ ceph_uid if containerized_deployment else 'ceph' }}"
    mode: "0400"
  environment:
    CEPH_CONTAINER_IMAGE: "{{ ceph_docker_registry + '/' + ceph_docker_image + ':' + ceph_docker_image_tag if containerized_deployment else None }}"
    CEPH_CONTAINER_BINARY: "{{ container_binary }}"

- name: copy the initial key in /etc/ceph (for containers)
  command: >
    cp /var/lib/ceph/tmp/{{ cluster }}.mon..keyring
       /etc/ceph/{{ cluster }}.mon.keyring    
  changed_when: false
  when: containerized_deployment | bool

- name: create monitor directory
  file:
    path: /var/lib/ceph/mon/{{ cluster }}-{{ monitor_name }}
    state: directory
    owner: "{{ ceph_uid if containerized_deployment | bool else 'ceph' }}"
    group: "{{ ceph_uid if containerized_deployment | bool else 'ceph' }}"
    mode: "{{ ceph_directories_mode | default('0755') }}"

# We don't do the recursion in the task above to avoid setting `mode` (which
# defaults to 0755) on files.
#
# This is only needed when upgrading from older versions of Ceph that used to
# run as `root` (https://github.com/ceph/ceph-ansible/issues/1635).
- name: recursively fix ownership of monitor directory
  file:
    path: /var/lib/ceph/mon/{{ cluster }}-{{ monitor_name }}
    state: directory
    owner: "{{ ceph_uid if containerized_deployment | bool else 'ceph' }}"
    group: "{{ ceph_uid if containerized_deployment | bool else 'ceph' }}"
    recurse: true

- name: create custom admin keyring
  ceph_key:
    name: client.admin
    state: present
    secret: "{{ admin_secret }}"
    caps: "{{ client_admin_ceph_authtool_cap }}"
    import_key: False
    cluster: "{{ cluster }}"
    owner: "{{ ceph_uid if containerized_deployment else 'ceph' }}"
    group: "{{ ceph_uid if containerized_deployment else 'ceph' }}"
    mode: "0400"
  environment:
    CEPH_CONTAINER_IMAGE: "{{ ceph_docker_registry + '/' + ceph_docker_image + ':' + ceph_docker_image_tag if containerized_deployment else None }}"
    CEPH_CONTAINER_BINARY: "{{ container_binary }}"
  register: create_custom_admin_secret
  when:
    - cephx | bool
    - admin_secret != 'admin_secret'

- name: set_fact ceph-authtool container command
  set_fact:
    ceph_authtool_cmd: "{{ container_binary + ' run --net=host --rm -v /var/lib/ceph:/var/lib/ceph:z -v /etc/ceph/:/etc/ceph/:z --entrypoint=ceph-authtool ' + ceph_client_docker_registry + '/' + ceph_client_docker_image + ':' + ceph_client_docker_image_tag if containerized_deployment else 'ceph-authtool' }}"

- name: import admin keyring into mon keyring
  command: >
    {{ ceph_authtool_cmd }}
     /var/lib/ceph/tmp/{{ cluster }}.mon..keyring --import-keyring /etc/ceph/{{ cluster }}.client.admin.keyring    
  when:
    - not create_custom_admin_secret.get('skipped')
    - cephx | bool
    - admin_secret != 'admin_secret'

- name: set_fact ceph-mon container command
  set_fact:
    ceph_mon_cmd: "{{ container_binary + ' run --rm --net=host -v /var/lib/ceph/:/var/lib/ceph:z -v /etc/ceph/:/etc/ceph/:z --entrypoint=ceph-mon ' + ceph_client_docker_registry + '/' + ceph_client_docker_image + ':' +ceph_client_docker_image_tag if containerized_deployment else 'ceph-mon' }}"

- name: ceph monitor mkfs with keyring
  command: >
    {{ ceph_mon_cmd }}
    --cluster {{ cluster }}
    --setuser "{{ ceph_uid if containerized_deployment else 'ceph' }}"
    --setgroup "{{ ceph_uid if containerized_deployment else 'ceph' }}"
    --mkfs
    -i {{ monitor_name }}
    --fsid {{ fsid }}
    --keyring /var/lib/ceph/tmp/{{ cluster }}.mon..keyring    
  args:
    creates: /var/lib/ceph/mon/{{ cluster }}-{{ monitor_name }}/keyring
  when: cephx | bool

- name: ceph monitor mkfs without keyring
  command: >
    {{ ceph_mon_cmd }}
    --cluster {{ cluster }}
    --setuser "{{ ceph_uid if containerized_deployment else 'ceph' }}"
    --setgroup "{{ ceph_uid if containerized_deployment else 'ceph' }}"
    --mkfs
    -i {{ monitor_name }}
    --fsid {{ fsid }}    
  args:
    creates: /var/lib/ceph/mon/{{ cluster }}-{{ monitor_name }}/store.db
  when: not cephx | bool