Description of problem: neutron-openvswitch-agent wont start and is hang in the reboot loop /etc/neutron/plugins/ml2/ml2_conf.ini firewall_driver = openvswitch /etc/neutron/plugins/ml2/openvswitch_agent.ini firewall_driver = neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver 2018-11-30 19:01:20.456 413650 WARNING stevedore.named [req-fce281e1-0c38-4cc4-bd7c-3082c2a246d9 - - - - -] Could not load neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver 2018-11-30 19:01:25.667 413650 INFO oslo_rootwrap.client [req-fce281e1-0c38-4cc4-bd7c-3082c2a246d9 - - - - -] Spawned new rootwrap daemon process with pid=413692 2018-11-30 19:01:27.639 413650 INFO neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent [req-eb5ddd06-2be6-48d0-a8bc-f5d5b05cb0c4 - - - - -] Agent initialized successfully, now running... 2018-11-30 19:01:32.647 413650 CRITICAL neutron [-] Timeout: 5 seconds 2018-11-30 19:01:32.647 413650 ERROR neutron Traceback (most recent call last): 2018-11-30 19:01:32.647 413650 ERROR neutron File "/usr/bin/neutron-openvswitch-agent", line 10, in <module> 2018-11-30 19:01:32.647 413650 ERROR neutron sys.exit(main()) 2018-11-30 19:01:32.647 413650 ERROR neutron File "/usr/lib/python2.7/site-packages/neutron/cmd/eventlet/plugins/ovs_neutron_agent.py", line 20, in main 2018-11-30 19:01:32.647 413650 ERROR neutron agent_main.main() 2018-11-30 19:01:32.647 413650 ERROR neutron File "/usr/lib/python2.7/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/main.py", line 51, in main 2018-11-30 19:01:32.647 413650 ERROR neutron mod.main() 2018-11-30 19:01:32.647 413650 ERROR neutron File "/usr/lib/python2.7/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/openflow/native/main.py", line 35, in main 2018-11-30 19:01:32.647 413650 ERROR neutron 'neutron.plugins.ml2.drivers.openvswitch.agent.' 2018-11-30 19:01:32.647 413650 ERROR neutron File "/usr/lib/python2.7/site-packages/ryu/base/app_manager.py", line 375, in run_apps 2018-11-30 19:01:32.647 413650 ERROR neutron hub.joinall(services) 2018-11-30 19:01:32.647 413650 ERROR neutron File "/usr/lib/python2.7/site-packages/ryu/lib/hub.py", line 97, in joinall 2018-11-30 19:01:32.647 413650 ERROR neutron t.wait() 2018-11-30 19:01:32.647 413650 ERROR neutron File "/usr/lib/python2.7/site-packages/eventlet/greenthread.py", line 175, in wait 2018-11-30 19:01:32.647 413650 ERROR neutron return self._exit_event.wait() 2018-11-30 19:01:32.647 413650 ERROR neutron File "/usr/lib/python2.7/site-packages/eventlet/event.py", line 125, in wait 2018-11-30 19:01:32.647 413650 ERROR neutron current.throw(*self._exc) 2018-11-30 19:01:32.647 413650 ERROR neutron File "/usr/lib/python2.7/site-packages/eventlet/greenthread.py", line 214, in main 2018-11-30 19:01:32.647 413650 ERROR neutron result = function(*args, **kwargs) 2018-11-30 19:01:32.647 413650 ERROR neutron File "/usr/lib/python2.7/site-packages/ryu/lib/hub.py", line 59, in _launch 2018-11-30 19:01:32.647 413650 ERROR neutron raise e 2018-11-30 19:01:32.647 413650 ERROR neutron Timeout: 5 seconds 2018-11-30 19:01:32.647 413650 ERROR neutron Version-Release number of selected component (if applicable): OSP 10 openstack-neutron-openvswitch-9.4.1-5.el7ost.noarch How reproducible: Steps to Reproduce: 1. systemctl start neutron-openvswitch-agent 2. 3. Actual results: Expected results: Additional info:
More detailed traceback attached by the customer: Added additional debugging to /usr/lib/python2.7/site-packages/ryu/lib/hub.py:57 except BaseException as e: LOG.error('hub: uncaught exception: %s', traceback.format_exc()) Additional traceback generated by properly logging exception: 2018-12-01 01:39:14.955 984341 ERROR ryu.lib.hub [req-fdf8e6c0-dab5-4c22-88af-59b0d651e4e2 - - - - -] hub: uncaught exception: Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/ryu/lib/hub.py", line 54, in _launch return func(*args, **kwargs) File "/usr/lib/python2.7/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/openflow/native/ovs_ryuapp.py", line 43, in agent_main_wrapper ovs_agent.main(bridge_classes) File "/usr/lib/python2.7/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py", line 2185, in main agent.daemon_loop() File "/usr/lib/python2.7/site-packages/osprofiler/profiler.py", line 154, in wrapper return f(*args, **kwargs) File "/usr/lib/python2.7/site-packages/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py", line 2101, in daemon_loop self.ovsdb_monitor_respawn_interval) as pm: File "/usr/lib64/python2.7/contextlib.py", line 17, in __enter__ return self.gen.next() File "/usr/lib/python2.7/site-packages/neutron/agent/linux/polling.py", line 35, in get_polling_manager pm.start() File "/usr/lib/python2.7/site-packages/neutron/agent/linux/polling.py", line 57, in start self._monitor.start(block=True) File "/usr/lib/python2.7/site-packages/neutron/agent/linux/ovsdb_monitor.py", line 117, in start while not self.is_active(): File "/usr/lib/python2.7/site-packages/neutron/agent/linux/async_process.py", line 100, in is_active self.pid, self.cmd_without_namespace) File "/usr/lib/python2.7/site-packages/neutron/agent/linux/async_process.py", line 159, in pid run_as_root=self.run_as_root) File "/usr/lib/python2.7/site-packages/neutron/agent/linux/utils.py", line 297, in get_root_helper_child_pid pid = find_child_pids(pid)[0] File "/usr/lib/python2.7/site-packages/neutron/agent/linux/utils.py", line 179, in find_child_pids log_fail_as_error=False) File "/usr/lib/python2.7/site-packages/neutron/agent/linux/utils.py", line 128, in execute _stdout, _stderr = obj.communicate(_process_input) File "/usr/lib64/python2.7/subprocess.py", line 800, in communicate return self._communicate(input) File "/usr/lib64/python2.7/subprocess.py", line 1403, in _communicate stdout, stderr = self._communicate_with_select(input) File "/usr/lib64/python2.7/subprocess.py", line 1504, in _communicate_with_select rlist, wlist, xlist = select.select(read_set, write_set, []) File "/usr/lib/python2.7/site-packages/eventlet/green/select.py", line 86, in select return hub.switch() File "/usr/lib/python2.7/site-packages/eventlet/hubs/hub.py", line 294, in switch return self.greenlet.switch() Timeout: 5 seconds 2018-12-01 01:39:14.956 984341 CRITICAL neutron [-] Timeout: 5 seconds