---
upgrade:
  - |
    The online part of the service upgrades (online data migrations)
    is now run using::

        openstack overcloud external-upgrade run --tags online_upgrade

    or per-service like::

        openstack overcloud external-upgrade run --tags online_upgrade_nova
        openstack overcloud external-upgrade run --tags online_upgrade_cinder
        openstack overcloud external-upgrade run --tags online_upgrade_ironic

    Consult the upgrade documentation regarding the full upgrade
    workflow.