heat-engine fails to terminate worker processes

[James Page]

We've seen this a few times in testing - specifically impacts upstart managed heat-engine; systemd does a better job of cleaning up the failure.

2016-05-10 09:20:02.923 19107 ERROR heat.engine.service [-] Failed to stop engine service, 'NoneType' object has no attribute 'stop'
2016-05-10 09:20:02.924 19106 ERROR heat.engine.service [-] Failed to stop engine service, 'NoneType' object has no attribute 'stop'
2016-05-10 09:20:02.925 19104 ERROR heat.engine.service [-] Failed to stop engine service, 'NoneType' object has no attribute 'stop'
2016-05-10 09:20:02.925 19105 ERROR heat.engine.service [-] Failed to stop engine service, 'NoneType' object has no attribute 'stop'
2016-05-10 09:20:02.978 18804 INFO oslo_service.service [-] Caught SIGTERM, stopping children
2016-05-10 09:20:02.979 18804 ERROR heat.engine.service [-] Failed to stop engine service, 'NoneType' object has no attribute 'stop'
2016-05-10 09:20:02.980 18804 CRITICAL heat-engine [-] AttributeError: 'NoneType' object has no attribute 'groups'
2016-05-10 09:20:02.980 18804 ERROR heat-engine Traceback (most recent call last):
2016-05-10 09:20:02.980 18804 ERROR heat-engine File "/usr/bin/heat-engine", line 10, in <module>
2016-05-10 09:20:02.980 18804 ERROR heat-engine sys.exit(main())
2016-05-10 09:20:02.980 18804 ERROR heat-engine File "/usr/lib/python2.7/dist-packages/heat/cmd/engine.py", line 79, in main
2016-05-10 09:20:02.980 18804 ERROR heat-engine launcher.wait()
2016-05-10 09:20:02.980 18804 ERROR heat-engine File "/usr/lib/python2.7/dist-packages/oslo_service/service.py", line 577, in wait
2016-05-10 09:20:02.980 18804 ERROR heat-engine self.stop()
2016-05-10 09:20:02.980 18804 ERROR heat-engine File "/usr/lib/python2.7/dist-packages/oslo_service/service.py", line 586, in stop
2016-05-10 09:20:02.980 18804 ERROR heat-engine service.stop()
2016-05-10 09:20:02.980 18804 ERROR heat-engine File "/usr/lib/python2.7/dist-packages/osprofiler/profiler.py", line 117, in wrapper
2016-05-10 09:20:02.980 18804 ERROR heat-engine return f(*args, **kwargs)
2016-05-10 09:20:02.980 18804 ERROR heat-engine File "/usr/lib/python2.7/dist-packages/heat/engine/service.py", line 426, in stop
2016-05-10 09:20:02.980 18804 ERROR heat-engine for stack_id in list(self.thread_group_mgr.groups.keys()):
2016-05-10 09:20:02.980 18804 ERROR heat-engine AttributeError: 'NoneType' object has no attribute 'groups'
2016-05-10 09:20:02.980 18804 ERROR heat-engine
2016-05-10 09:20:03.106 19104 INFO oslo_service.service [-] Parent process has died unexpectedly, exiting
2016-05-10 09:20:03.108 19106 INFO oslo_service.service [-] Parent process has died unexpectedly, exiting
2016-05-10 09:20:03.108 19107 INFO oslo_service.service [-] Parent process has died unexpectedly, exiting
2016-05-10 09:20:03.109 19105 INFO oslo_service.service [-] Parent process has died unexpectedly, exiting
2016-05-10 09:20:03.110 19104 ERROR heat.engine.service [-] Failed to stop engine service, 'NoneType' object has no attribute 'stop'
2016-05-10 09:20:03.111 19107 ERROR heat.engine.service [-] Failed to stop engine service, 'NoneType' object has no attribute 'stop'
2016-05-10 09:20:03.112 19105 ERROR heat.engine.service [-] Failed to stop engine service, 'NoneType' object has no attribute 'stop'
2016-05-10 09:20:03.115 19106 ERROR heat.engine.service [-] Failed to stop engine service, 'NoneType' object has no attribute 'stop'

[James Page (james-page)]

Might be a dupe of bug 1562042