Am struggling to delete machines in the gmaas. One of my rack controllers is busted, but that shouldn't affect this operation. I see this in the regiond.log:
2018-06-10 16:40:38 RegionServer,2,::ffff:192.168.9.7: [info] RegionServer connection lost (HOST:IPv6Address(TCP, '::ffff:192.168.9.10', 5251) PEER:IPv6Address(TCP, '::ffff:192.168.9.7', 37158))
2018-06-10 16:40:38 maasserver.ipc: [info] Worker pid:3060 lost RPC connection to ('8tsb7m', '192.168.9.10', 5251).
2018-06-10 16:40:38 maasserver.ipc: [info] Worker pid:3060 lost RPC connection to ('4y3h7n', '192.168.9.10', 5251).
2018-06-10 16:40:38 maasserver.ipc: [info] Worker pid:3060 lost RPC connection to ('fbgtn8', '192.168.9.10', 5251).
2018-06-10 16:40:54 maasserver: [error] Error while calling DescribePowerTypes: Unable to get RPC connection for rack controller 'lapsi' (4nqs36).
2018-06-10 16:40:58 maasserver: [error] Error while calling DescribePowerTypes: Unable to get RPC connection for rack controller 'lapsi' (4nqs36).
2018-06-10 16:42:03 maasserver.websockets.protocol: [critical] Error on request (37) machine.action: hkttxq
Traceback (most recent call last):
File "/usr/lib/python3.6/threading.py", line 864, in run
self._target(*self._args, **self._kwargs)
File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 850, in worker
return target()
File "/usr/lib/python3/dist-packages/twisted/_threads/_threadworker.py", line 46, in work
task()
File "/usr/lib/python3/dist-packages/twisted/_threads/_team.py", line 190, in doWork
task()
--- <exception caught here> ---
File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 250, in inContext
result = inContext.theWork()
File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 266, in <lambda>
inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 122, in callWithContext
return self.currentContext().callWithContext(ctx, func, *args, **kw)
File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 85, in callWithContext
return func(*args,**kw)
File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 883, in callInContext
return func(*args, **kwargs)
File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 232, in wrapper
result = func(*args, **kwargs)
File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 756, in call_within_transaction
return func_outside_txn(*args, **kwargs)
File "/usr/lib/python3/dist-packages/maasserver/utils/orm.py", line 563, in retrier
return func(*args, **kwargs)
File "/usr/lib/python3.6/contextlib.py", line 52, in inner
return func(*args, **kwds)
File "/usr/lib/python3/dist-packages/maasserver/websockets/handlers/machine.py", line 732, in action
obj = self.get_object(params)
File "/usr/lib/python3/dist-packages/maasserver/websockets/handlers/node.py", line 692, in get_object
obj = super(NodeHandler, self).get_object(params)
File "/usr/lib/python3/dist-packages/maasserver/websockets/base.py", line 289, in get_object
raise HandlerDoesNotExistError(pk)
maasserver.websockets.base.HandlerDoesNotExistError: hkttxq
2018-06-10 16:42:07 maasserver.region_controller: [info] Reloaded DNS configuration; removed node amused-guinea
This looks like the machine already had been deleted. Maybe the UI was stale and didn't indicate this.
Either way, MAAS should handle this, and shouldn't error out if you try to delete a node that doesn't exist anymore.