openstack-ansible-os_nova/tasks/nova_db_setup.yml

---
# Copyright 2014, Rackspace US, 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: Create DB for service
  mysql_db:
    login_user: "{{ galera_root_user }}"
    login_password: "{{ galera_root_password }}"
    login_host: "{{ nova_galera_address }}"
    name: "{{ item }}"
    state: "present"
  delegate_to: "{{ nova_db_setup_host }}"
  no_log: True
  with_items:
    - "{{ nova_galera_database }}"
    - "{{ nova_api_galera_database }}"
    - "{{ nova_cell0_database }}"

- name: Grant access to DBs for the services
  mysql_user:
    login_user: "{{ galera_root_user }}"
    login_password: "{{ galera_root_password }}"
    login_host: "{{ nova_galera_address }}"
    name: "{{ item['name'] }}"
    password: "{{ item['password'] }}"
    host: "{{ item['host'] }}"
    state: "present"
    priv: "{{ item['database'] }}.*:ALL"
    append_privs: "{{ item['db_append_privs'] | default(omit) }}"
  delegate_to: "{{ nova_db_setup_host }}"
  with_items:
    - name: "{{ nova_galera_user }}"
      password: "{{ nova_container_mysql_password }}"
      host: "localhost"
      database: "{{ nova_galera_database }}"
      db_append_privs: "yes"
    - name: "{{ nova_galera_user }}"
      password: "{{ nova_container_mysql_password }}"
      host: "%"
      database: "{{ nova_galera_database }}"
      db_append_privs: "yes"
    - name: "{{ nova_api_galera_user }}"
      password: "{{ nova_api_container_mysql_password }}"
      host: "localhost"
      database: "{{ nova_api_galera_database }}"
      db_append_privs: "yes"
    - name: "{{ nova_api_galera_user }}"
      password: "{{ nova_api_container_mysql_password }}"
      host: "%"
      database: "{{ nova_api_galera_database }}"
      db_append_privs: "yes"
    - name: "{{ nova_api_galera_user }}"
      password: "{{ nova_api_container_mysql_password }}"
      host: "localhost"
      database: "{{ nova_cell0_database }}"
      db_append_privs: "yes"
    - name: "{{ nova_api_galera_user }}"
      password: "{{ nova_api_container_mysql_password }}"
      host: "%"
      database: "{{ nova_cell0_database }}"
      db_append_privs: "yes"
  no_log: True

- name: Synchronize the nova API DB schema
  command: "{{ nova_bin }}/nova-manage api_db sync"
  become: yes
  become_user: "{{ nova_system_user_name }}"
  changed_when: false

# This is idempotent and therefore safe for greenfield
# and brownfield installations.
- name: Create the cell0 mapping entry in the nova API DB
  command: >-
    {{ nova_bin }}/nova-manage cell_v2 map_cell0
      --database_connection mysql+pymysql://{{ nova_api_galera_user }}:{{ nova_api_container_mysql_password }}@{{ nova_api_galera_address }}/{{ nova_cell0_database }}?charset=utf8    
  become: yes
  become_user: "{{ nova_system_user_name }}"
  changed_when: false

- name: Synchronize the nova DB schema
  command: "{{ nova_bin }}/nova-manage db sync"
  become: yes
  become_user: "{{ nova_system_user_name }}"
  changed_when: false

- name: Perform online data migrations
  command: "{{ nova_bin }}/nova-manage db online_data_migrations"
  become: yes
  become_user: "{{ nova_system_user_name }}"
  when:
    - "(nova_all_software_updated | default('no')) | bool"
    - "ansible_local['openstack_ansible']['nova']['need_online_data_migrations'] | bool"
  changed_when: false
  register: data_migrations

- name: Disable the online migrations requirement
  ini_file:
    dest: "/etc/ansible/facts.d/openstack_ansible.fact"
    section: nova
    option: need_online_data_migrations
    value: False
  when:
    - not data_migrations | skipped
    - data_migrations  is succeeded

- name: Create the cell1 mapping entry in the nova API DB
  command: >-
    {{ nova_bin }}/nova-manage cell_v2 create_cell
      --name {{ nova_cell1_name }}
      --database_connection mysql+pymysql://{{ nova_galera_user }}:{{ nova_container_mysql_password }}@{{ nova_galera_address }}/{{ nova_galera_database }}?charset=utf8    
  become: yes
  become_user: "{{ nova_system_user_name }}"
  register: nova_cell1_create
  # When upgrading, cell1 will already exist and nova-manage will
  # give a return code of 2, so we therefore know that if the
  # return code is:
  # 0: the cell mapping record in the nova API database was
  #    successfully implemented (greenfield install)
  # 2: the cell mapping record in the nova API database already
  #    exists (brownfield install)
  failed_when: "nova_cell1_create.rc not in [0, 2]"
  changed_when: "nova_cell1_create.rc == 0"

# When upgrading we need to map existing instances to the new cell1
# To do this we need the cell UUID.
- name: Get UUID of new Nova Cell
  shell: "{{ nova_bin }}/nova-manage cell_v2 list_cells | grep ' {{ nova_cell1_name }} '"
  become: yes
  become_user: "{{ nova_system_user_name }}"
  register: cell1_uuid
  changed_when: false
  when: "nova_cell1_create.rc == 0"

- name: Map instances to new Cell1
  command: "{{ nova_bin }}/nova-manage cell_v2 map_instances --cell_uuid {{ cell1_uuid['stdout'].split()[3] }}"
  become: yes
  become_user: "{{ nova_system_user_name }}"
  changed_when: false
  when: "nova_cell1_create.rc == 0"