kolla-ansible/ansible/roles/nova/tasks/upgrade.yml

---
# TODO(bbezak): Remove this task in the Dalmatian cycle.
- import_role:
    name: service-ks-register
  vars:
    service_ks_register_auth: "{{ openstack_nova_auth }}"
    service_ks_register_user_roles: "{{ nova_ks_user_roles }}"

- name: Run Nova upgrade checks
  become: true
  vars:
    nova_api: "{{ nova_services['nova-api'] }}"
  kolla_container:
    action: "start_container"
    common_options: "{{ docker_common_options }}"
    detach: False
    environment:
      KOLLA_UPGRADE_CHECK:
      KOLLA_CONFIG_STRATEGY: "{{ config_strategy }}"
    image: "{{ nova_api.image }}"
    labels:
      UPGRADE:
    name: "nova_upgrade_checks"
    restart_policy: oneshot
    volumes: "{{ nova_api_default_volumes + nova_api_extra_volumes }}"
  run_once: True
  register: nova_upgrade_check_stdout
  delegate_to: "{{ groups['nova-api'][0] }}"
  failed_when: false
  check_mode: false

- name: Upgrade status check result
  fail:
    msg:
      - "There was an upgrade status check failure!"
      - "See the detail at https://docs.openstack.org/nova/latest/cli/nova-status.html#nova-status-checks"
  vars:
    first_nova_api_host: "{{ groups['nova-api'][0] }}"
  when: hostvars[first_nova_api_host]['nova_upgrade_check_stdout']['rc'] not in [0, 1]

- name: Stopping top level nova services
  become: true
  kolla_container:
    action: "stop_container"
    common_options: "{{ docker_common_options }}"
    name: "{{ item.value.container_name }}"
  with_dict: "{{ nova_services | select_services_enabled_and_mapped_to_host }}"
  when:
    - nova_safety_upgrade | bool

- import_tasks: rolling_upgrade.yml