Public bug reported:

Using the mitaka packages from trusty/proposed:

ii  ironic-api                       1:5.1.0-0ubuntu1~cloud0               all  
        Openstack bare metal provisioning service - API
ii  ironic-common                    1:5.1.0-0ubuntu1~cloud0               all  
        Openstack bare metal provisioning service - daemons
ii  ironic-conductor                 1:5.1.0-0ubuntu1~cloud0               all  
        Openstack bare metal provisioning service - conductor
ii  python-ironic                    1:5.1.0-0ubuntu1~cloud0               all  
        Openstack bare metal provisioning service - Python library
ii  python-ironic-lib                1.1.0-1~cloud0                        all  
        common library used by various Ironic projects - Python 2.7
ii  python-ironicclient              1.2.0-0ubuntu1~cloud0                 all  
        Client for OpenStack bare metal Service - Python 2.7

I'm not sure what's going on but conductor is throwing this when
stopping:

However it is actually no longer running:


2016-04-05 04:27:42.089 8920 ERROR ironic.common.service [-] Service error 
occurred when stopping the RPC server. Error: Cannot switch to MAINLOOP from 
MAINLOOP
2016-04-05 04:27:42.089 8920 ERROR ironic.common.service Traceback (most recent 
call last):
2016-04-05 04:27:42.089 8920 ERROR ironic.common.service   File 
"/usr/lib/python2.7/dist-packages/ironic/common/service.py", line 93, in stop
2016-04-05 04:27:42.089 8920 ERROR ironic.common.service     
self.rpcserver.wait()
2016-04-05 04:27:42.089 8920 ERROR ironic.common.service   File 
"/usr/lib/python2.7/dist-packages/oslo_messaging/server.py", line 267, in 
wrapper
2016-04-05 04:27:42.089 8920 ERROR ironic.common.service     log_after, 
timeout_timer)
2016-04-05 04:27:42.089 8920 ERROR ironic.common.service   File 
"/usr/lib/python2.7/dist-packages/oslo_messaging/server.py", line 187, in 
run_once
2016-04-05 04:27:42.089 8920 ERROR ironic.common.service     post_fn = fn()
2016-04-05 04:27:42.089 8920 ERROR ironic.common.service   File 
"/usr/lib/python2.7/dist-packages/oslo_messaging/server.py", line 266, in 
<lambda>
2016-04-05 04:27:42.089 8920 ERROR ironic.common.service     
states[state].run_once(lambda: fn(self, *args, **kwargs),
2016-04-05 04:27:42.089 8920 ERROR ironic.common.service   File 
"/usr/lib/python2.7/dist-packages/oslo_messaging/server.py", line 445, in wait
2016-04-05 04:27:42.089 8920 ERROR ironic.common.service     
self._poll_executor.shutdown(wait=True)
2016-04-05 04:27:42.089 8920 ERROR ironic.common.service   File 
"/usr/lib/python2.7/dist-packages/futurist/_futures.py", line 411, in shutdown
2016-04-05 04:27:42.089 8920 ERROR ironic.common.service     
self._pool.waitall()
2016-04-05 04:27:42.089 8920 ERROR ironic.common.service   File 
"/usr/lib/python2.7/dist-packages/eventlet/greenpool.py", line 120, in waitall
2016-04-05 04:27:42.089 8920 ERROR ironic.common.service     
self.no_coros_running.wait()
2016-04-05 04:27:42.089 8920 ERROR ironic.common.service   File 
"/usr/lib/python2.7/dist-packages/eventlet/event.py", line 121, in wait
2016-04-05 04:27:42.089 8920 ERROR ironic.common.service     return 
hubs.get_hub().switch()
2016-04-05 04:27:42.089 8920 ERROR ironic.common.service   File 
"/usr/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 280, in switch
2016-04-05 04:27:42.089 8920 ERROR ironic.common.service     assert cur is not 
self.greenlet, 'Cannot switch to MAINLOOP from MAINLOOP'
2016-04-05 04:27:42.089 8920 ERROR ironic.common.service AssertionError: Cannot 
switch to MAINLOOP from MAINLOOP
2016-04-05 04:27:42.089 8920 ERROR ironic.common.service

** Affects: ironic (Ubuntu)
     Importance: Undecided
         Status: New

** Summary changed:

- Mitaka ironic-conductor won't start: Cannot switch to MAINLOOP from MAINLOOP
+ Mitaka ironic-conductor error on stop: Cannot switch to MAINLOOP from MAINLOOP

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https://bugs.launchpad.net/bugs/1566136

Title:
  Mitaka ironic-conductor error on stop: Cannot switch to MAINLOOP from
  MAINLOOP

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