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---
upgrade:
- |
The *cells v1* feature has been deprecated since the 16.0.0 Pike release
and has now been removed. The ``nova-cells`` service and ``nova-manage
cells`` commands have been removed, while the ``nova-manage cell_v2
simple_cell_setup`` command will no longer check if cells v1 is enabled and
therefore can no longer exit with ``2``.
The *cells v1* specific REST APIs have been removed along with their
related policy rules. Calling these APIs will now result in a ``410
(Gone)`` error response.
* ``GET /os-cells``
* ``POST /os-cells``
* ``GET /os-cells/capacities``
* ``GET /os-cells/detail``
* ``GET /os-cells/info``
* ``POST /os-cells/sync_instances``
* ``GET /os-cells/{cell_id}``
* ``PUT /os-cells/{cell_id}``
* ``DELETE /os-cells/{cell_id}``
* ``GET /os-cells/{cell_id}/capacities``
The *cells v1* specific policies have been removed.
* ``cells_scheduler_filter:DifferentCellFilter``
* ``cells_scheduler_filter:TargetCellFilter``
The *cells v1* specific configuration options, previously found in
``cells``, have been removed.
* ``enabled``
* ``name``
* ``capabilities``
* ``call_timeout``
* ``reserve_percent``
* ``cell_type``
* ``mute_child_interval``
* ``bandwidth_update_interval``
* ``instance_update_sync_database_limit``
* ``mute_weight_multiplier``
* ``ram_weight_multiplier``
* ``offset_weight_multiplier``
* ``instance_updated_at_threshold``
* ``instance_update_num_instances``
* ``max_hop_count``
* ``scheduler``
* ``rpc_driver_queue_base``
* ``scheduler_filter_classes``
* ``scheduler_weight_classes``
* ``scheduler_retries``
* ``scheduler_retry_delay``
* ``db_check_interval``
* ``cells_config``
In addition, the following *cells v1* related RPC configuration options,
previously found in ``upgrade_levels``, have been removed.
* ``cells``
* ``intercell``
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