pause:
  description: |
    Pause keystone services.
    If the keystone deployment is clustered using the hacluster charm, the
    corresponding hacluster unit on the node must first be paused as well.
    Not doing so may lead to an interruption of service.
resume:
  description: |
    Resume keystone services.
    If the keystone deployment is clustered using the hacluster charm, the
    corresponding hacluster unit on the node must be resumed as well.
openstack-upgrade:
  description: |
    Perform openstack upgrades. Config option action-managed-upgrade must be
    set to True.