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[Bug 1572322] Re: Neutron failed to spawn rootwrap process.

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Launchpad Bug Tracker <1572322@xxxxxxxxxxxxxxxxxx>
Date: Sun, 17 Jul 2016 04:17:23 -0000
Reply-to: Bug 1572322 <1572322@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
[Expired for neutron because there has been no activity for 60 days.]

** Changed in: neutron
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1572322

Title:
  Neutron failed to spawn rootwrap process.

Status in neutron:
  Expired

Bug description:
  I installed Openstack Liberty for multi-node deployment, during the installation of the the neutron-openvswitch-agent on compute node,
  the neutron-oenvswitch-agent failed to start.

  Checking the log from /var/log/neutron/openvswitch-agent.log, it looks
  like neutron failed to spawn rootwrap process.

  The details log as followings,

  ------------------------------------------------------------------------
  2016-04-19 15:05:36.552 5562 DEBUG neutron.agent.linux.utils [-] Running command (rootwrap daemon): ['ovs-vsctl', '--timeout=10', '--oneline', '--format=json', '--', '--may-exist', 'add-br', 'br-int', '--', 'set', 'Bridge', 'br-int', 'datapath_type=system'] execute_rootwrap_daemon /usr/lib/python2.7/site-packages/neutron/agent/linux/utils.py:101
  2016-04-19 15:05:36.560 5562 DEBUG oslo_rootwrap.client [-] Popen for ['sudo', 'neutron-rootwrap-daemon', '/etc/neutron/rootwrap.conf'] command has been instantiated _initialize /usr/lib/python2.7/site-packages/oslo_rootwrap/client.py:76
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl [-] Unable to execute ['ovs-vsctl', '--timeout=10', '--oneline', '--format=json', '--', '--may-exist', 'add-br', 'br-int', '--', 'set', 'Bridge', 'br-int', 'datapath_type=system'].
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl Traceback (most recent call last):
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl   File "/usr/lib/python2.7/site-packages/neutron/agent/ovsdb/impl_vsctl.py", line 63, in run_vsctl
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl     log_fail_as_error=False).rstrip()
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl   File "/usr/lib/python2.7/site-packages/neutron/agent/linux/utils.py", line 117, in execute
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl     execute_rootwrap_daemon(cmd, process_input, addl_env))
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl   File "/usr/lib/python2.7/site-packages/neutron/agent/linux/utils.py", line 103, in execute_rootwrap_daemon
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl     return client.execute(cmd, process_input)
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl   File "/usr/lib/python2.7/site-packages/oslo_rootwrap/client.py", line 133, in execute
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl     self._ensure_initialized()
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl   File "/usr/lib/python2.7/site-packages/oslo_rootwrap/client.py", line 118, in _ensure_initialized
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl     self._initialize()
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl   File "/usr/lib/python2.7/site-packages/oslo_rootwrap/client.py", line 88, in _initialize
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl     (stderr,))
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl Exception: Failed to spawn rootwrap process.
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl stderr:
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl Traceback (most recent call last):
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl   File "/usr/bin/neutron-rootwrap-daemon", line 10, in <module>
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl     sys.exit(daemon())
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl   File "/usr/lib/python2.7/site-packages/oslo_rootwrap/cmd.py", line 57, in daemon
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl     return main(run_daemon=True)
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl   File "/usr/lib/python2.7/site-packages/oslo_rootwrap/cmd.py", line 98, in main
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl     daemon_mod.daemon_start(config, filters)
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl   File "/usr/lib/python2.7/site-packages/oslo_rootwrap/daemon.py", line 92, in daemon_start
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl     server = manager.get_server()
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl   File "/usr/lib64/python2.7/multiprocessing/managers.py", line 493, in get_server
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl     self._authkey, self._serializer)
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl   File "/usr/lib64/python2.7/multiprocessing/managers.py", line 162, in __init__
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl     self.listener = Listener(address=address, backlog=16)
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl   File "/usr/lib/python2.7/site-packages/oslo_rootwrap/jsonrpc.py", line 66, in __init__
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl     self._socket.bind(address)
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl   File "/usr/lib64/python2.7/socket.py", line 224, in meth
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl     return getattr(self._sock,name)(*args)
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl socket.error: [Errno 13] Permission denied
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl
  2016-04-19 15:05:36.624 5562 ERROR neutron.agent.ovsdb.impl_vsctl

  ------------------------------------------------------------------------

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References

[Bug 1572322] [NEW] Neutron failed to spawn rootwrap process.
From: Jason, 2016-04-19