--- deprecations: - | The ``AvailabilityZoneFilter`` scheduler filters is now deprecated for removal in a future release. The functionality of the ``AvailabilityZoneFilter`` has been replaced by the ``map_az_to_placement_aggregate`` pre-filter which was introduced in 18.0.0 (Rocky). This pre-filter is now enabled by default and will be mandatory in a future release. upgrades: - | The ``AvailabilityZoneFilter`` has been removed from the default ``[scheduler] enabled_filters`` list. The ``AvailabilityZoneFilter`` is replaced by an optional placement pre-filter which is enabled by ``[scheduler] query_placement_for_availability_zone``. The pre-filter is now enabled by default. If you choose to disable the AZ pre-filter, you will need to re-add ``AvailabilityZoneFilter`` to the ``[scheduler] enabled_filters`` config value.