rackd fails setup because maasserver.models.node.DoesNotExist: RegionController matching query does not exist.

[Greg Lutostanski]

version: maas_2.2.3-6114-g672ff26-0ubuntu1~16.04.1

From rackd.log:
2017-10-04 13:10:17 provisioningserver.rpc.clusterservice: [info] Rack controller 'artkwb' registered (via infra1:pid=16947).
2017-10-04 13:10:26 provisioningserver.rackdservices.dhcp_probe_service: [info] External DHCP probe complete.
2017-10-04 13:10:41 provisioningserver.utils.services: [critical] Failed to update and/or record network interface configuration: (b'UNHANDLED', 'Unknown Error [infra1:pid=16944:cmd=RequestRackRefresh:ask=5]')

Traceback (most recent call last):
Failure: twisted.protocols.amp.UnhandledCommand: (b'UNHANDLED', 'Unknown Error [infra1:pid=16944:cmd=RequestRackRefresh:ask=5]')

From syslog:
Oct 4 13:10:08 infra1 sh[16936]: 2017-10-04 13:10:08 maasserver.regiondservices.active_discovery: [info] Active network discovery: Discovery interval set to 10800 seconds.
Oct 4 13:10:08 infra1 sh[16936]: 2017-10-04 13:10:08 maasserver.regiondservices.active_discovery: [info] Active network discovery: Active scanning is not enabled on any subnet. Skipping periodic scan.
Oct 4 13:10:08 infra1 sh[16936]: 2017-10-04 13:10:08 twisted.internet.defer: [critical] Unhandled error in Deferred:
Oct 4 13:10:08 infra1 sh[16936]: 2017-10-04 13:10:08 twisted.internet.defer: [critical]
Oct 4 13:10:08 infra1 sh[16936]: Traceback (most recent call last):
Oct 4 13:10:08 infra1 sh[16936]: File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 434, in errback
Oct 4 13:10:08 infra1 sh[16936]: self._startRunCallbacks(fail)
Oct 4 13:10:08 infra1 sh[16936]: File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 501, in _startRunCallbacks
Oct 4 13:10:08 infra1 sh[16936]: self._runCallbacks()
Oct 4 13:10:08 infra1 sh[16936]: File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 588, in _runCallbacks
Oct 4 13:10:08 infra1 sh[16936]: current.result = callback(current.result, *args, **kw)
Oct 4 13:10:08 infra1 sh[16936]: File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1184, in gotResult
Oct 4 13:10:08 infra1 sh[16936]: _inlineCallbacks(r, g, deferred)
Oct 4 13:10:08 infra1 sh[16936]: --- <exception caught here> ---
Oct 4 13:10:08 infra1 sh[16936]: File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1126, in _inlineCallbacks
Oct 4 13:10:08 infra1 sh[16936]: result = result.throwExceptionIntoGenerator(g)
Oct 4 13:10:08 infra1 sh[16936]: File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 389, in throwExceptionIntoGenerator
Oct 4 13:10:08 infra1 sh[16936]: return g.throw(self.type, self.value, self.tb)
Oct 4 13:10:08 infra1 sh[16936]: File "/usr/lib/python3/dist-packages/maasserver/regiondservices/reverse_dns.py", line 42, in startService
Oct 4 13:10:08 infra1 sh[16936]: RegionController.objects.get_running_controller)
Oct 4 13:10:08 infra1 sh[16936]: File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 246, in inContext
Oct 4 13:10:08 infra1 sh[16936]: result = inContext.theWork()
Oct 4 13:10:08 infra1 sh[16936]: File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 262, in <lambda>
Oct 4 13:10:08 infra1 sh[16936]: inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
Oct 4 13:10:08 infra1 sh[16936]: File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 118, in callWithContext
Oct 4 13:10:08 infra1 sh[16936]: return self.currentContext().callWithContext(ctx, func, *args, **kw)
Oct 4 13:10:08 infra1 sh[16936]: File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 81, in callWithContext
Oct 4 13:10:08 infra1 sh[16936]: return func(*args,**kw)
Oct 4 13:10:08 infra1 sh[16936]: File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 875, in callInContext
Oct 4 13:10:08 infra1 sh[16936]: return func(*args, **kwargs)
Oct 4 13:10:08 infra1 sh[16936]: File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 232, in wrapper
Oct 4 13:10:08 infra1 sh[16936]: result = func(*args, **kwargs)
Oct 4 13:10:08 infra1 sh[16936]: File "/usr/lib/python3/dist-packages/maasserver/models/node.py", line 648, in get_running_controller
Oct 4 13:10:08 infra1 sh[16936]: return self.get(system_id=get_maas_id())
Oct 4 13:10:08 infra1 sh[16936]: File "/usr/lib/python3/dist-packages/django/db/models/manager.py", line 127, in manager_method
Oct 4 13:10:08 infra1 sh[16936]: return getattr(self.get_queryset(), name)(*args, **kwargs)
Oct 4 13:10:08 infra1 sh[16936]: File "/usr/lib/python3/dist-packages/django/db/models/query.py", line 334, in get
Oct 4 13:10:08 infra1 sh[16936]: self.model._meta.object_name
Oct 4 13:10:08 infra1 sh[16936]: maasserver.models.node.DoesNotExist: RegionController matching query does not exist.
Oct 4 13:10:08 infra1 sh[16936]: 2017-10-04 13:10:08 maasserver.listener: [info] Listening for database notifications.
Oct 4 13:10:08 infra1 named[16888]: network unreachable resolving 'E.ROOT-SERVERS.NET/AAAA/IN': 2001:7fe::53#53

logs attached (check 10.245.208.30 subdir).