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[Ihar Hrachyshka <1611237@xxxxxxxxxxxxxxxxxx>]

I just hit the same bug with Xenial:
http://logs.openstack.org/58/396658/1/gate/gate-grenade-dsvm-neutron-
ubuntu-
xenial/0538719/logs/old/screen-q-agt.txt.gz?level=WARNING#_2016-11-15_20_18_58_453

Seems like it's not the old ps in the end. :-|

** Changed in: neutron
       Status: Invalid => Confirmed

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https://bugs.launchpad.net/bugs/1611237

Title:
  Restart neutron-openvswitch-agent get ERROR "Switch connection
  timeout"

Status in neutron:
  Confirmed

Bug description:
  Environment: devstack  master, ubuntu 14.04

  After ./stack.sh finished, kill the neutron-openvswitch-agent process
  and then start it by /usr/bin/python /usr/local/bin/neutron-
  openvswitch-agent --config-file /etc/neutron/neutron.conf --config-
  file /etc/neutron/plugins/ml2/ml2_conf.ini

  The log shows :
  2016-08-08 11:02:06.346 ERROR ryu.lib.hub [-] hub: uncaught exception: Traceback (most recent call last):
    File "/usr/local/lib/python2.7/dist-packages/ryu/lib/hub.py", line 54, in _launch
      return func(*args, **kwargs)
    File "/usr/local/lib/python2.7/dist-packages/ryu/controller/controller.py", line 97, in __call__
      self.ofp_ssl_listen_port)
    File "/usr/local/lib/python2.7/dist-packages/ryu/controller/controller.py", line 120, in server_loop
      datapath_connection_factory)
    File "/usr/local/lib/python2.7/dist-packages/ryu/lib/hub.py", line 117, in __init__
      self.server = eventlet.listen(listen_info)
    File "/usr/local/lib/python2.7/dist-packages/eventlet/convenience.py", line 43, in listen
      sock.bind(addr)
    File "/usr/lib/python2.7/socket.py", line 224, in meth
      return getattr(self._sock,name)(*args)
  error: [Errno 98] Address already in use

  and
  ERROR neutron.plugins.ml2.drivers.openvswitch.agent.openflow.native.ofswitch [-] Switch connection timeout

  In kilo I could start ovs-agent in this way correctly, I do not know
  it is right to start ovs-agent in master.

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