ceph-ansible/roles/ceph-config/tasks/main.yml

---
# ceph-common
- block:
  - name: create ceph conf directory
    file:
      path: "/etc/ceph"
      state: directory
      owner: "ceph"
      group: "ceph"
      mode: "0755"

  - block:
    - name: count number of osds for ceph-disk scenarios
      set_fact:
        num_osds: "{{ devices | length | int }}"
      when:
        - devices | default([]) | length > 0
        - osd_scenario in ['collocated', 'non-collocated']

    - name: count number of osds for lvm scenario
      set_fact:
        num_osds: "{{ lvm_volumes | length | int }}"
      when:
        - lvm_volumes | default([]) | length > 0
        - osd_scenario == 'lvm'

    # This is a best guess. Ideally we'd like to use `ceph-volume lvm batch --report` to get
    # a more accurate number but the ceph.conf needs to be in place before that is possible.
    # There is a tracker to add functionality to ceph-volume which would allow doing this
    # without the need for a ceph.conf: http://tracker.ceph.com/issues/36088
    - name: count number of osds for lvm batch scenario
      set_fact:
        num_osds: "{{ devices | length | int * osds_per_device | default(1) }}"
      when:
        - devices | default([]) | length > 0
        - osd_scenario == 'lvm'
    when:
      - inventory_hostname in groups.get(osd_group_name, [])

  - name: "generate ceph configuration file: {{ cluster }}.conf"
    action: config_template
    args:
      src: ceph.conf.j2
      dest: /etc/ceph/{{ cluster }}.conf
      owner: "ceph"
      group: "ceph"
      mode: "0644"
      config_overrides: "{{ ceph_conf_overrides }}"
      config_type: ini
    notify:
      - restart ceph mons
      - restart ceph osds
      - restart ceph mdss
      - restart ceph rgws
      - restart ceph mgrs
      - restart ceph rbdmirrors

  - name: "ensure fetch directory exists"
    run_once: true
    become: false
    local_action:
      module: file
      path: "{{ fetch_directory }}/{{ fsid }}/etc/ceph"
      state: directory
      mode: "0755"
    when:
      - ceph_conf_local

  - name: "generate {{ cluster }}.conf configuration file locally"
    local_action: config_template
    become: false
    run_once: true
    args:
      src: "ceph.conf.j2"
      dest: "{{ fetch_directory }}/{{ fsid }}/etc/ceph/{{ cluster }}.conf"
      config_overrides: "{{ ceph_conf_overrides }}"
      config_type: ini
    when:
      - inventory_hostname in groups[mon_group_name]
      - ceph_conf_local
  when:
    - not containerized_deployment|bool

# ceph-docker-common
# only create fetch directory when:
# we are not populating kv_store with default ceph.conf AND host is a mon
# OR
# we are not population kv_store with default ceph.conf AND there at least 1 nfs in nfs group AND host is the first nfs
- block:
  - name: create a local fetch directory if it does not exist
    local_action:
      module: file
      path: "{{ fetch_directory }}"
      state: directory
    changed_when: false
    become: false
    run_once: true
    when:
      - (cephx or generate_fsid)
      - (not mon_containerized_default_ceph_conf_with_kv and
          (inventory_hostname in groups.get(mon_group_name, []))) or
        (not mon_containerized_default_ceph_conf_with_kv and
          ((groups.get(nfs_group_name, []) | length > 0)
            and (inventory_hostname == groups.get(nfs_group_name, [])[0])))

  - name: generate cluster uuid
    local_action:
      module: shell
        python -c 'import uuid; print(str(uuid.uuid4()))' | tee {{ fetch_directory }}/ceph_cluster_uuid.conf
      creates: "{{ fetch_directory }}/ceph_cluster_uuid.conf"
    register: cluster_uuid
    become: false
    when:
      - generate_fsid

  - name: read cluster uuid if it already exists
    local_action:
      module: command
        cat {{ fetch_directory }}/ceph_cluster_uuid.conf
      removes: "{{ fetch_directory }}/ceph_cluster_uuid.conf"
    changed_when: false
    register: cluster_uuid
    check_mode: no
    become: false
    when:
      - generate_fsid

  - name: ensure /etc/ceph exists
    file:
      path: /etc/ceph
      state: directory
      owner: "{{ ceph_uid }}"
      group: "{{ ceph_uid }}"
      mode: 0755

  - name: "generate {{ cluster }}.conf configuration file"
    action: config_template
    args:
      src: "ceph.conf.j2"
      dest: "{{ ceph_conf_key_directory }}/{{ cluster }}.conf"
      owner: "root"
      group: "root"
      mode: "0644"
      config_overrides: "{{ ceph_conf_overrides }}"
      config_type: ini
    notify:
      - restart ceph mons
      - restart ceph osds
      - restart ceph mdss
      - restart ceph rgws
      - restart ceph mgrs
      - restart ceph rbdmirrors

  - name: set fsid fact when generate_fsid = true
    set_fact:
      fsid: "{{ cluster_uuid.stdout }}"
    when:
      - generate_fsid
  when:
    - containerized_deployment|bool