[Bug 1622715] [NEW] neutron-openvswitch-agent - error on startup

[James Page]

Public bug reported:

I've seen this a few times during setup of the n-ovs-agent process on
network nodes (n-gateway) in juju deployments on OpenStack Newton B3+ on
Xenial:

2016-09-12 14:41:45.565 20629 WARNING stevedore.named [req-3762dc49-86d7-406b-81fb-5b068416abf9 - - - - -] Could not load neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver
2016-09-12 14:41:56.447 20629 ERROR ryu.lib.hub [req-5c9cbccf-7bcb-4c1f-a954-69202bfbcd56 - - - - -] hub: uncaught exception: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/ryu/lib/hub.py", line 52, in _launch
    func(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/neutron/plugins/ml2/drivers/openvswitch/agent/openflow/native/ovs_ryuapp.py", line 35, in agent_main_wrapper
    ovs_agent.main(bridge_classes)
  File "/usr/lib/python2.7/dist-packages/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py", line 2175, in main
    agent.daemon_loop()
  File "/usr/lib/python2.7/dist-packages/osprofiler/profiler.py", line 154, in wrapper
    return f(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py", line 2094, in daemon_loop
    self.ovsdb_monitor_respawn_interval) as pm:
  File "/usr/lib/python2.7/contextlib.py", line 17, in __enter__
    return self.gen.next()
  File "/usr/lib/python2.7/dist-packages/neutron/agent/linux/polling.py", line 35, in get_polling_manager
    pm.start()
  File "/usr/lib/python2.7/dist-packages/neutron/agent/linux/polling.py", line 57, in start
    self._monitor.start(block=True)
  File "/usr/lib/python2.7/dist-packages/neutron/agent/linux/ovsdb_monitor.py", line 117, in start
    while not self.is_active():
  File "/usr/lib/python2.7/dist-packages/neutron/agent/linux/async_process.py", line 100, in is_active
    self.pid, self.cmd_without_namespace)
  File "/usr/lib/python2.7/dist-packages/neutron/agent/linux/async_process.py", line 159, in pid
    run_as_root=self.run_as_root)
  File "/usr/lib/python2.7/dist-packages/neutron/agent/linux/utils.py", line 234, in get_root_helper_child_pid
    pid = find_child_pids(pid)[0]
  File "/usr/lib/python2.7/dist-packages/neutron/agent/linux/utils.py", line 167, in find_child_pids
    log_fail_as_error=False)
  File "/usr/lib/python2.7/dist-packages/neutron/agent/linux/utils.py", line 118, in execute
    _stdout, _stderr = obj.communicate(_process_input)
  File "/usr/lib/python2.7/subprocess.py", line 800, in communicate
    return self._communicate(input)
  File "/usr/lib/python2.7/subprocess.py", line 1437, in _communicate
    self.wait()
  File "/usr/lib/python2.7/dist-packages/eventlet/green/subprocess.py", line 87, in wait
    eventlet.sleep(check_interval)
  File "/usr/lib/python2.7/dist-packages/eventlet/greenthread.py", line 34, in sleep
    hub.switch()
  File "/usr/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 294, in switch
    return self.greenlet.switch()
Timeout: 5 seconds

Something is spinning - not sure what; the agent is non-responsive and
needs a restart to get things working.

** Affects: neutron (Ubuntu)
     Importance: Undecided
         Status: New

-- 
You received this bug notification because you are a member of Ubuntu
OpenStack, which is subscribed to neutron in Ubuntu.
https://bugs.launchpad.net/bugs/1622715

Title:
  neutron-openvswitch-agent - error on startup

Status in neutron package in Ubuntu:
  New

Bug description:
  I've seen this a few times during setup of the n-ovs-agent process on
  network nodes (n-gateway) in juju deployments on OpenStack Newton B3+
  on Xenial:

  2016-09-12 14:41:45.565 20629 WARNING stevedore.named [req-3762dc49-86d7-406b-81fb-5b068416abf9 - - - - -] Could not load neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver
  2016-09-12 14:41:56.447 20629 ERROR ryu.lib.hub [req-5c9cbccf-7bcb-4c1f-a954-69202bfbcd56 - - - - -] hub: uncaught exception: Traceback (most recent call last):
    File "/usr/lib/python2.7/dist-packages/ryu/lib/hub.py", line 52, in _launch
      func(*args, **kwargs)
    File "/usr/lib/python2.7/dist-packages/neutron/plugins/ml2/drivers/openvswitch/agent/openflow/native/ovs_ryuapp.py", line 35, in agent_main_wrapper
      ovs_agent.main(bridge_classes)
    File "/usr/lib/python2.7/dist-packages/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py", line 2175, in main
      agent.daemon_loop()
    File "/usr/lib/python2.7/dist-packages/osprofiler/profiler.py", line 154, in wrapper
      return f(*args, **kwargs)
    File "/usr/lib/python2.7/dist-packages/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py", line 2094, in daemon_loop
      self.ovsdb_monitor_respawn_interval) as pm:
    File "/usr/lib/python2.7/contextlib.py", line 17, in __enter__
      return self.gen.next()
    File "/usr/lib/python2.7/dist-packages/neutron/agent/linux/polling.py", line 35, in get_polling_manager
      pm.start()
    File "/usr/lib/python2.7/dist-packages/neutron/agent/linux/polling.py", line 57, in start
      self._monitor.start(block=True)
    File "/usr/lib/python2.7/dist-packages/neutron/agent/linux/ovsdb_monitor.py", line 117, in start
      while not self.is_active():
    File "/usr/lib/python2.7/dist-packages/neutron/agent/linux/async_process.py", line 100, in is_active
      self.pid, self.cmd_without_namespace)
    File "/usr/lib/python2.7/dist-packages/neutron/agent/linux/async_process.py", line 159, in pid
      run_as_root=self.run_as_root)
    File "/usr/lib/python2.7/dist-packages/neutron/agent/linux/utils.py", line 234, in get_root_helper_child_pid
      pid = find_child_pids(pid)[0]
    File "/usr/lib/python2.7/dist-packages/neutron/agent/linux/utils.py", line 167, in find_child_pids
      log_fail_as_error=False)
    File "/usr/lib/python2.7/dist-packages/neutron/agent/linux/utils.py", line 118, in execute
      _stdout, _stderr = obj.communicate(_process_input)
    File "/usr/lib/python2.7/subprocess.py", line 800, in communicate
      return self._communicate(input)
    File "/usr/lib/python2.7/subprocess.py", line 1437, in _communicate
      self.wait()
    File "/usr/lib/python2.7/dist-packages/eventlet/green/subprocess.py", line 87, in wait
      eventlet.sleep(check_interval)
    File "/usr/lib/python2.7/dist-packages/eventlet/greenthread.py", line 34, in sleep
      hub.switch()
    File "/usr/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 294, in switch
      return self.greenlet.switch()
  Timeout: 5 seconds

  Something is spinning - not sure what; the agent is non-responsive and
  needs a restart to get things working.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/neutron/+bug/1622715/+subscriptions