Comment 1 for bug 1544757

Additional Crashes from maas clusterd.log

==> /var/log/maas/maas.log <==
Feb 12 12:48:10 maas-devel maas.power: [ERROR] Power state could not be queried:
Feb 12 12:48:10 maas-devel maas.power: [ERROR] ms10-03-avaton.1ss: Failed to refresh power state:

==> /var/log/maas/clusterd.log <==
2016-02-12 12:48:10-0500 [ClusterClient,client] Failed to refresh power state.
 Traceback (most recent call last):
   File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 423, in errback
     self._startRunCallbacks(fail)
   File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 490, in _startRunCallbacks
     self._runCallbacks()
   File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 577, in _runCallbacks
     current.result = callback(current.result, *args, **kw)
   File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1155, in gotResult
     _inlineCallbacks(r, g, deferred)
 --- <exception caught here> ---
   File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1097, in _inlineCallbacks
     result = result.throwExceptionIntoGenerator(g)
   File "/usr/lib/python2.7/dist-packages/twisted/python/failure.py", line 389, in throwExceptionIntoGenerator
     return g.throw(self.type, self.value, self.tb)
   File "/usr/lib/python2.7/dist-packages/provisioningserver/power/query.py", line 126, in get_power_state
     system_id, hostname, power_type, context)
   File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1097, in _inlineCallbacks
     result = result.throwExceptionIntoGenerator(g)
   File "/usr/lib/python2.7/dist-packages/twisted/python/failure.py", line 389, in throwExceptionIntoGenerator
     return g.throw(self.type, self.value, self.tb)
   File "/usr/lib/python2.7/dist-packages/provisioningserver/drivers/power/__init__.py", line 246, in query
     self.power_query, system_id, context)
   File "/usr/lib/python2.7/dist-packages/twisted/python/threadpool.py", line 191, in _worker
     result = context.call(ctx, function, *args, **kwargs)
   File "/usr/lib/python2.7/dist-packages/twisted/python/context.py", line 118, in callWithContext
     return self.currentContext().callWithContext(ctx, func, *args, **kw)
   File "/usr/lib/python2.7/dist-packages/twisted/python/context.py", line 81, in callWithContext
     return func(*args,**kw)
   File "/usr/lib/python2.7/dist-packages/provisioningserver/drivers/power/mscm.py", line 57, in power_query
     return power_state_mscm(host, username, password, node_id)
   File "/usr/lib/python2.7/dist-packages/provisioningserver/drivers/hardware/mscm.py", line 184, in power_state_mscm
     power_state = mscm.get_node_power_state(node_id)
   File "/usr/lib/python2.7/dist-packages/provisioningserver/drivers/hardware/mscm.py", line 143, in get_node_power_state
     power_state = self._run_cli_command("show node power %s" % node_id)
   File "/usr/lib/python2.7/dist-packages/provisioningserver/drivers/hardware/mscm.py", line 74, in _run_cli_command
     self.host, username=self.username, password=self.password)
   File "/usr/lib/python2.7/dist-packages/paramiko/client.py", line 306, in connect
     t.start_client()
   File "/usr/lib/python2.7/dist-packages/paramiko/transport.py", line 465, in start_client
     raise e
 exceptions.EOFError: