kolla-ansible/ansible/roles/mariadb/tasks/bootstrap.yml

---
- name: Cleaning up temp file on localhost
  local_action: file path=/tmp/kolla_mariadb_cluster state=absent
  changed_when: False
  always_run: True
  run_once: True

- name: Creating temp file on localhost
  local_action: copy content=None dest=/tmp/kolla_mariadb_cluster mode=0600
  changed_when: False
  always_run: True
  run_once: True

# TODO(SamYaple): Improve failed_when check
- name: Checking if a previous cluster exists
  command: docker exec mariadb stat /var/lib/mysql/grastate.dat
  register: exists
  changed_when: False
  failed_when: False
  always_run: True
  run_once: True

- name: Writing hostname of host with existing cluster files to temp file
  local_action: copy content={{ ansible_hostname }} dest=/tmp/kolla_mariadb_cluster mode=0600
  changed_when: False
  always_run: True
  when: exists.rc == 0

- name: Registering host from temp file
  set_fact:
    delegate_host: "{{ lookup('file', '/tmp/kolla_mariadb_cluster') }}"

- name: Cleaning up temp file on localhost
  local_action: file path=/tmp/kolla_mariadb_cluster state=absent
  changed_when: False
  always_run: True
  run_once: True

- name: Starting MariaDB data container
  docker:
    tty: True
    net: host
    pull: "{{ docker_pull_policy }}"
    restart_policy: "{{ docker_restart_policy }}"
    restart_policy_retry: "{{ docker_restart_policy_retry }}"
    state: reloaded
    registry: "{{ docker_registry }}"
    username: "{{ docker_registry_username }}"
    password: "{{ docker_registry_password }}"
    insecure_registry: "{{ docker_insecure_registry }}"
    name: mariadb_data
    image: "{{ mariadb_data_image_full }}"
    volumes: "/var/lib/mysql/"

- name: Starting MariaDB bootstrap container
  docker:
    tty: True
    net: host
    pull: "{{ docker_pull_policy }}"
    restart_policy: "no"
    restart_policy_retry: "{{ docker_restart_policy_retry }}"
    state: reloaded
    registry: "{{ docker_registry }}"
    username: "{{ docker_registry_username }}"
    password: "{{ docker_registry_password }}"
    insecure_registry: "{{ docker_insecure_registry }}"
    name: mariadb
    image: "{{ mariadb_image_full }}"
    volumes: "{{ node_config_directory }}/mariadb/:{{ container_config_directory }}/:ro"
    volumes_from:
      - "mariadb_data"
    env:
      KOLLA_BOOTSTRAP:
      KOLLA_CONFIG_STRATEGY: "{{ config_strategy }}"
      DB_ROOT_PASSWORD: "{{ database_password }}"
  when: delegate_host == 'None' and inventory_hostname == groups['mariadb'][0]

- name: Sleeping for 15 seconds while the cluster starts
  command: sleep 15
  changed_when: False
  when: delegate_host == 'None' and inventory_hostname == groups['mariadb'][0]