---
features:
  - |
    The ``aodh_api_cron`` container has been added to run aodh-expirer command
    periodically, to remove expired alarms from Aodh database.
    Use AodhExpire* parameters to override cron parameters.

  - |
    The new ``AodhAlarmHistoryTTL`` parameter has been added, which defines
    TTL of alarm histories in aodh. This parameter is set as 86400 by default.