roles/ceph_mon/tasks/main.yml

# Copyright (c) 2022 VEXXHOST, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.

- name: Install packages
  ansible.builtin.apt:
    name: ["ceph-mon"]
    install_recommends: false

- name: Set ceph monitor ip address
  ansible.builtin.set_fact:
    ceph_mon_ip_address: "{{ ansible_all_ipv4_addresses | ansible.netcommon.ipaddr(ceph_mon_public_network) | first }}"

- name: Generate basic configuration file
  community.general.ini_file:
    path: /etc/ceph/ceph.conf
    section: global
    option: "{{ item.option }}"
    value: "{{ item.value }}"
    owner: ceph
    group: ceph
    mode: "0640"
  loop:
    - option: fsid
      value: "{{ ceph_mon_fsid }}"
    - option: mon host
      value: "{{ groups[ceph_mon_group] | map('extract', hostvars, ['ceph_mon_ip_address']) | join(',') }}"
    - option: public network
      value: "{{ ceph_mon_public_network }}"
    - option: cluster network
      value: "{{ ceph_mon_cluster_network }}"

- name: Check if any node is bootstrapped
  ansible.builtin.stat:
    path: "/var/lib/ceph/mon/ceph-{{ hostvars[item]['inventory_hostname_short'] }}/store.db"
  register: _ceph_mon_stat
  loop: "{{ groups[ceph_mon_group] }}"
  delegate_to: "{{ item }}"

- name: Select pre-existing bootstrap node if exists
  ansible.builtin.set_fact:
    _ceph_mon_bootstrap_node: "{{ _ceph_mon_stat.results | selectattr('stat.exists', 'equalto', true) | map(attribute='item') | first }}"
  when:
    - _ceph_mon_stat.results | selectattr('stat.exists', 'equalto', true) | length > 0

- name: Bootstrap cluster
  ansible.builtin.include_tasks: bootstrap-ceph.yml
  when:
    - _ceph_mon_stat.results | selectattr('stat.exists', 'equalto', true) | length == 0

- name: Grab admin keyring
  delegate_to: "{{ _ceph_mon_bootstrap_node }}"
  ansible.builtin.slurp:
    src: /etc/ceph/ceph.client.admin.keyring
  register: _ceph_mon_admin_keyring
  when: inventory_hostname != _ceph_mon_bootstrap_node

- name: Upload client.admin keyring
  ansible.builtin.copy:
    content: "{{ _ceph_mon_admin_keyring['content'] | b64decode }}"
    dest: /etc/ceph/ceph.client.admin.keyring
    mode: "0600"
  when: inventory_hostname != _ceph_mon_bootstrap_node

- name: Get monitor keyring
  ansible.builtin.command: ceph auth get mon. -o /tmp/ceph.mon.keyring
  changed_when: false
  when: inventory_hostname != _ceph_mon_bootstrap_node

- name: Get monmap keyring
  ansible.builtin.command: ceph mon getmap -o /tmp/monmap
  changed_when: false
  when: inventory_hostname != _ceph_mon_bootstrap_node

- name: Start monitor
  ansible.builtin.include_tasks: start-monitor.yml
  when: inventory_hostname != _ceph_mon_bootstrap_node

- name: Enable "msgr2"
  ansible.builtin.command: ceph mon enable-msgr2
  changed_when: false
  when: inventory_hostname == _ceph_mon_bootstrap_node