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[Pavel <pshvetsov@xxxxxxxxxxxx>]

** Project changed: nova => mos

** Changed in: mos
   Importance: Undecided => Medium

** Changed in: mos
    Milestone: None => 9.0

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https://bugs.launchpad.net/bugs/1602274

Title:
  Connection timed out

Status in Mirantis OpenStack:
  New

Bug description:
  Detailed bug description:
  Problem discovered on MOS 9.0 ISO #495 RC2

  Problem was discovered during execution of NovaServers.resize_server
  rally test: AMQP server is unreachable 6 times from 97.

  Nova log file atached to this bug.
  Nova api log of this issue:

  2016-07-07 13:09:44.688 19298 DEBUG keystoneauth.session [-] REQ: curl -g -i -X GET http://192.168.0.2:35357/v3/auth/tokens -H "X-Subject-Token: {SHA1}b4af682fec7d7d1d9eae361e225206444e9248c2" -H "User-Agent: python-keystoneclient" -H "Accept: application/json" -H "X-Auth-Token: {SHA1}63adf02cc36a824b4c6f0ee6ba6003f06ea88ae9" _http_log_request /usr/lib/python2.7/dist-packages/keystoneauth1/session.py:248
  2016-07-07 13:09:48.363 19400 DEBUG nova.metadata.wsgi.server [req-17a7f302-f66c-432d-8ebf-ec180b6da5cc - - - - -] (19400) accepted ('240.0.0.2', 42160) server /usr/lib/python2.7/dist-packages/eventlet/wsgi.py:867
  2016-07-07 13:09:48.366 19400 INFO nova.metadata.wsgi.server [-] 240.0.0.2 "OPTIONS / HTTP/1.0" status: 200 len: 234 time: 0.0007420
  2016-07-07 13:09:48.811 19311 DEBUG nova.osapi_compute.wsgi.server [req-ea429186-3ca0-4e49-bd6b-fd333b1ba765 - - - - -] (19311) accepted ('240.0.0.2', 45402) server /usr/lib/python2.7/dist-packages/eventlet/wsgi.py:867
  2016-07-07 13:09:48.813 19311 DEBUG nova.api.openstack.wsgi [-] Calling method '<bound method Versions.index of <nova.api.openstack.compute.versions.Versions object at 0x7f8517191690>>' _process_stack /usr/lib/python2.7/dist-packages/nova/api/openstack/wsgi.py:699
  2016-07-07 13:09:48.814 19311 INFO nova.osapi_compute.wsgi.server [-] 240.0.0.2 "OPTIONS / HTTP/1.0" status: 200 len: 501 time: 0.0018778
  2016-07-07 13:09:56.098 19271 DEBUG oslo.messaging._drivers.impl_rabbit [-] Received recoverable error from kombu: on_error /usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/impl_rabbit.py:683
  2016-07-07 13:09:56.098 19271 ERROR oslo.messaging._drivers.impl_rabbit Traceback (most recent call last):
  2016-07-07 13:09:56.098 19271 ERROR oslo.messaging._drivers.impl_rabbit   File "/usr/lib/python2.7/dist-packages/kombu/connection.py", line 436, in _ensured
  2016-07-07 13:09:56.098 19271 ERROR oslo.messaging._drivers.impl_rabbit     return fun(*args, **kwargs)
  2016-07-07 13:09:56.098 19271 ERROR oslo.messaging._drivers.impl_rabbit   File "/usr/lib/python2.7/dist-packages/kombu/connection.py", line 508, in __call__
  2016-07-07 13:09:56.098 19271 ERROR oslo.messaging._drivers.impl_rabbit     return fun(*args, channel=channels[0], **kwargs), channels[0]
  2016-07-07 13:09:56.098 19271 ERROR oslo.messaging._drivers.impl_rabbit   File "/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/impl_rabbit.py", line 734, in execute_method
  2016-07-07 13:09:56.098 19271 ERROR oslo.messaging._drivers.impl_rabbit     method()
  2016-07-07 13:09:56.098 19271 ERROR oslo.messaging._drivers.impl_rabbit   File "/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/impl_rabbit.py", line 1028, in _consume
  2016-07-07 13:09:56.098 19271 ERROR oslo.messaging._drivers.impl_rabbit     self.connection.drain_events(timeout=poll_timeout)
  2016-07-07 13:09:56.098 19271 ERROR oslo.messaging._drivers.impl_rabbit   File "/usr/lib/python2.7/dist-packages/kombu/connection.py", line 275, in drain_events
  2016-07-07 13:09:56.098 19271 ERROR oslo.messaging._drivers.impl_rabbit     return self.transport.drain_events(self.connection, **kwargs)
  2016-07-07 13:09:56.098 19271 ERROR oslo.messaging._drivers.impl_rabbit   File "/usr/lib/python2.7/dist-packages/kombu/transport/pyamqp.py", line 95, in drain_events
  2016-07-07 13:09:56.098 19271 ERROR oslo.messaging._drivers.impl_rabbit     return connection.drain_events(**kwargs)
  2016-07-07 13:09:56.098 19271 ERROR oslo.messaging._drivers.impl_rabbit   File "/usr/lib/python2.7/dist-packages/amqp/connection.py", line 303, in drain_events
  2016-07-07 13:09:56.098 19271 ERROR oslo.messaging._drivers.impl_rabbit     chanmap, None, timeout=timeout,
  2016-07-07 13:09:56.098 19271 ERROR oslo.messaging._drivers.impl_rabbit   File "/usr/lib/python2.7/dist-packages/amqp/connection.py", line 366, in _wait_multiple
  2016-07-07 13:09:56.098 19271 ERROR oslo.messaging._drivers.impl_rabbit     channel, method_sig, args, content = read_timeout(timeout)
  2016-07-07 13:09:56.098 19271 ERROR oslo.messaging._drivers.impl_rabbit   File "/usr/lib/python2.7/dist-packages/amqp/connection.py", line 337, in read_timeout
  2016-07-07 13:09:56.098 19271 ERROR oslo.messaging._drivers.impl_rabbit     return self.method_reader.read_method()
  2016-07-07 13:09:56.098 19271 ERROR oslo.messaging._drivers.impl_rabbit   File "/usr/lib/python2.7/dist-packages/amqp/method_framing.py", line 189, in read_method
  2016-07-07 13:09:56.098 19271 ERROR oslo.messaging._drivers.impl_rabbit     raise m
  2016-07-07 13:09:56.098 19271 ERROR oslo.messaging._drivers.impl_rabbit error: [Errno 110] Connection timed out
  2016-07-07 13:09:56.098 19271 ERROR oslo.messaging._drivers.impl_rabbit 
  2016-07-07 13:09:56.100 19271 ERROR oslo.messaging._drivers.impl_rabbit [-] AMQP server on 192.168.0.7:5673 is unreachable: [Errno 110] Connection timed out. Trying again in 1 seconds.

  
  Steps to reproduce:
   Start rally test NovaServers.resize_server during the load. 
  Expected results:
   Test passed. Server flavor was chenged.
  Actual result:
   Test failed. 
  Reproducibility:
   Iterations: 97, Failures: 6
  Workaround:
   n/a
  Impact:
   unknown
  Description of the environment:
  	* 10 baremetal nodes:
  	   - CPU: 12 x 2.10 GHz
  	   - Disks: 2 drives (SSD - 80 GB, HDD - 931.5 GB), 1006.0 GB total
  	   - Memory: 2 x 16.0 GB, 32.0 GB total
  	   - NUMA topology: 1 NUMA node
  	* Node roles:
  	  - 3 controllers (1 was is offline because of disk problems)
  	  - 7 computes
  	* Details:
  	  - OS on controllers: Mitaka on Ubuntu 14.04
  	  - OS on computes: RHEL 
  	  - Compute: KVM
  	  - Neutron with VLAN segmentation

  Additional information:
   Diagnostic snapshot download link: http://mos-scale-share.mirantis.com/fuel-snapshot-2016-07-11_08-57-28.tar.gz

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