ironic.conductor.base_manager module

ironic.conductor.base_manager module

Base conductor manager functionality.

class ironic.conductor.base_manager.BaseConductorManager(host, topic)[source]

Bases: object

del_host(deregister=True)[source]
init_host(admin_context=None)[source]

Initialize the conductor host.

Parameters:admin_context – the admin context to pass to periodic tasks.
Raises:RuntimeError when conductor is already running.
Raises:NoDriversLoaded when no drivers are enabled on the conductor.
Raises:DriverNotFound if a driver is enabled that does not exist.
Raises:DriverLoadError if an enabled driver cannot be loaded.
Raises:DriverNameConflict if a classic driver and a dynamic driver are both enabled and have the same name.
iter_nodes(fields=None, **kwargs)[source]

Iterate over nodes mapped to this conductor.

Requests node set from and filters out nodes that are not mapped to this conductor.

Yields tuples (node_uuid, driver, conductor_group, …) where … is derived from fields argument, e.g.: fields=None means yielding (‘uuid’, ‘driver’, ‘conductor_group’), fields=[‘foo’] means yielding (‘uuid’, ‘driver’, ‘conductor_group’, ‘foo’).

Parameters:
  • fields – list of fields to fetch in addition to uuid, driver, and conductor_group
  • kwargs – additional arguments to pass to dbapi when looking for nodes
Returns:

generator yielding tuples of requested fields

prepare_host()[source]

Prepares host for initialization

Removes existing database entries involved with node locking for nodes in a transitory power state and nodes that are presently locked by the hostname of this conductor.

Under normal operation, this is also when the initial database connectivity is established for the conductor’s normal operation.

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