MAAS

[2.0a1] Enlistment fails if any rack controller is disconnected

Bug #1557732 reported by Blake Rouse on 2016-03-15

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	MAAS	Fix Released	Critical	Blake Rouse	MAAS 2.0.0

Bug Description

2016-03-15 20:12:51 [maasserver] ERROR: Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/maasserver/clusterrpc/utils.py", line 42, in call_clusters
    client = getClientFor(controller.system_id)
  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 144, in wrapper
    return func_in_reactor(*args, **kwargs).wait(LONGTIME)
  File "/usr/lib/python3/dist-packages/crochet/_eventloop.py", line 231, in wait
    result.raiseException()
  File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 368, in raiseException
    raise self.value.with_traceback(self.tb)
  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 588, in _runCallbacks
    current.result = callback(current.result, *args, **kw)
  File "/usr/lib/python3/dist-packages/maasserver/rpc/regionservice.py", line 843, in cancelled
    "available." % system_id, uuid=system_id)
provisioningserver.rpc.exceptions.NoConnectionsAvailable: Unable to connect to rack controller 4y3h7p; no connections available.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/django/core/handlers/base.py", line 132, in get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/usr/lib/python3/dist-packages/maasserver/utils/views.py", line 180, in view_atomic_with_post_commit_savepoint
    return view_atomic(*args, **kwargs)
  File "/usr/lib/python3.5/contextlib.py", line 30, in inner
    return func(*args, **kwds)
  File "/usr/lib/python3/dist-packages/maasserver/api/support.py", line 54, in __call__
    response = upcall(request, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/django/views/decorators/vary.py", line 21, in inner_func
    response = func(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/piston3/resource.py", line 190, in __call__
    result = self.error_handler(e, request, meth, em_format)
  File "/usr/lib/python3/dist-packages/piston3/resource.py", line 188, in __call__
    result = meth(request, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/maasserver/api/support.py", line 210, in dispatch
    return function(self, request, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/maasserver/api/machines.py", line 906, in create
    return create_machine(request)
  File "/usr/lib/python3/dist-packages/maasserver/api/machines.py", line 848, in create_machine
    store_node_power_parameters(machine, request)
  File "/usr/lib/python3/dist-packages/maasserver/api/nodes.py", line 59, in store_node_power_parameters
    power_types = get_power_types(None)
  File "/usr/lib/python3/dist-packages/maasserver/clusterrpc/power_parameters.py", line 171, in get_power_types
    power_types = get_all_power_types_from_clusters(controllers, ignore_errors)
  File "/usr/lib/python3/dist-packages/maasserver/clusterrpc/power_parameters.py", line 187, in get_all_power_types_from_clusters
    for response in responses:
  File "/usr/lib/python3/dist-packages/maasserver/clusterrpc/utils.py", line 51, in call_clusters
    controller.hostname, controller.system_id))
maasserver.exceptions.ClusterUnavailable: Unable to get RPC connection for rack controller 'maas-2' (4y3h7p)