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features:
  - Adds support for setting a shard key on a node, and filtering node or port
    lists by shard. This shard key is not used for any purpose internally in
    Ironic, but instead is intended to allow API clients to filter for a
    subset of nodes or ports. Being able to fetch only a subset of nodes or
    ports is useful for parallelizing any operational task that needs to be
    performed across all nodes or ports.
  - Adds support for querying for nodes which are sharded or unsharded. This
    is useful for allowing operators to find nodes which have not been
    assigned a shard key.
  - Adds support for querying for a list of shards via ``/v1/shards``. This
    endpoint will return a list of currently assigned shard keys as well as
    the count of nodes which has those keys assigned. Using this API endpoint,
    operators can see a high level listing of how their nodes are sharded.