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["Davanum Srinivas \(DIMS\)" <davanum@xxxxxxxxx>]

** Also affects: oslo
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1334651

Title:
  Nova api service outputs error messages when SIGHUP signal is sent

Status in OpenStack Compute (Nova):
  New
Status in Oslo - a Library of Common OpenStack Code:
  New

Bug description:
  When SIGHUP signal is send to nova-api service, it stops all the nova-
  api processes and while restarting the nova-api processes, it throws
  AttributeError: 'WSGIService' object has no attribute 'reset'.

  
  2014-06-24 15:52:55.185 CRITICAL nova [-] AttributeError: 'WSGIService' object has no attribute 'reset'

  2014-06-24 15:52:55.185 TRACE nova Traceback (most recent call last):
  2014-06-24 15:52:55.185 TRACE nova   File "/usr/local/bin/nova-api", line 10, in <module>
  2014-06-24 15:52:55.185 TRACE nova     sys.exit(main())
  2014-06-24 15:52:55.185 TRACE nova   File "/opt/stack/nova/nova/cmd/api.py", line 56, in main
  2014-06-24 15:52:55.185 TRACE nova     launcher.launch_service(server, workers=server.workers or 1)
  2014-06-24 15:52:55.185 TRACE nova   File "/opt/stack/nova/nova/openstack/common/service.py", line 340, in launch_service
  2014-06-24 15:52:55.185 TRACE nova     self._start_child(wrap)
  2014-06-24 15:52:55.185 TRACE nova   File "/opt/stack/nova/nova/openstack/common/service.py", line 324, in _start_child
  2014-06-24 15:52:55.185 TRACE nova     launcher.restart()
  2014-06-24 15:52:55.185 TRACE nova   File "/opt/stack/nova/nova/openstack/common/service.py", line 145, in restart
  2014-06-24 15:52:55.185 TRACE nova     self.services.restart()
  2014-06-24 15:52:55.185 TRACE nova   File "/opt/stack/nova/nova/openstack/common/service.py", line 478, in restart
  2014-06-24 15:52:55.185 TRACE nova     restart_service.reset()
  2014-06-24 15:52:55.185 TRACE nova AttributeError: 'WSGIService' object has no attribute 'reset'
  2014-06-24 15:52:55.185 TRACE nova 

  Steps to reproduce:
  1. Run nova-api service as daemon.
  2. Send SIGHUP signal to nova-api service
     kill -1 <parent_process_id_of_nova_api>

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