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---
features:
  - |
    Adds support for rescuing and unrescuing nodes:

    - Adds version 1.38 of the Bare Metal API, which includes:

      *  A node in the ``active`` provision state can be rescued via the
         ``GET /v1/nodes/{node_ident}/states/provision`` API, by specifying
         ``rescue`` as the ``target`` value, and a ``rescue_password``
         value. When the node has been rescued, it will be in the ``rescue``
         provision state. A rescue ramdisk will be running, configured with
         the specified ``rescue_password``, and listening with ssh on the
         tenant network.

      *  A node in the ``rescue`` provision state can be unrescued (to the
         ``active`` state) via the
         ``GET /v1/nodes/{node_ident}/states/provision`` API, by specifying
         ``unrescue`` as the ``target`` value.

      * The ``rescue_interface`` field of the node resource. A rescue
        interface can be set when creating or updating a node.

      * The ``default_rescue_interface`` and ``enabled_rescue_interfaces``
        fields of the driver resource.

    - Adds new configuration options for the rescue feature:

      * Rescue interfaces are enabled via
        ``[DEFAULT]/enabled_rescue_interfaces``. A default rescue interface
        to use when creating or updating nodes can be specified with
        ``[DEFAULT]/enabled_rescue_interfaces``.

      * Adds ``[conductor]/check_rescue_state_interval`` and
        ``[conductor]/rescue_callback_timeout`` to fail the rescue operation
        upon timeout, for the nodes that are stuck in the rescue wait state.

      * Adds support for providing ``rescuing`` network (UUIR or name) with its
        security groups using new options ``[neutron]/rescuing_network`` and
        ``[neutron]/rescuing_network_security_groups`` respectively. It is
        required to provide ``[neutron]/rescuing_network``. Alternatively,
        the rescuing network can be provided per node via the node's
        ``driver_info['rescuing_network']`` field.

    - Adds ``rescue_interface`` field to the following node-related
      notifications:

      * ``baremetal.node.create.*``, new payload version 1.3
      * ``baremetal.node.update.*``, new payload version 1.3
      * ``baremetal.node.delete.*``, new payload version 1.3
      * ``baremetal.node.maintenance.*``, new payload version 1.5
      * ``baremetal.node.console.*``, new payload version 1.5
      * ``baremetal.node.power_set.*``, new payload version 1.5
      * ``baremetal.node.power_state_corrected.*``, new payload version 1.5
      * ``baremetal.node.provision_set.*``, new payload version 1.5