neutron linuxbridge fails to create interfaces

[Emilien Macchi]

Deploying OpenStack latest Newton on Ubuntu Xenial with Neutron Linuxbridge agent, Nova fails to create an instance.

nova-compute logs:
http://logs.openstack.org/51/367551/5/check/gate-puppet-openstack-integration-3-scenario003-tempest-ubuntu-xenial/d634f0b/logs/nova/nova-compute.txt.gz#_2016-09-08_21

neutron logs:
http://logs.openstack.org/51/367551/5/check/gate-puppet-openstack-integration-3-scenario003-tempest-ubuntu-xenial/d634f0b/logs/neutron/neutron-linuxbridge-agent.txt.gz#_2016-09-08_21_46_45_383

It sounds like br_netfilter kernel module is now required.

[Emilien Macchi (emilienm)]

It sounds like it was introduced by https://github.com/openstack/neutron/commit/359b7c971a88f6dff64e8e4d558210a880f3ee0f

[Emilien Macchi (emilienm)]

I confirm that when br_netfilter kernel module is added, I can create an instance and Neutron can create a port.
I would suggest to load it from Neutron packaging so it would work out of the box.

[Emilien Macchi (emilienm)]

Update, this is a transient issue and adding the module didn't help to fix it permanently.

[Emilien Macchi (emilienm)]

ok I finally got it, we're hitting https://bugs.launchpad.net/neutron/+bug/1617447
We need an update of os-vif to be 1.2.1 instead of 1.2.0.

[Launchpad Janitor (janitor)]

This bug was fixed in the package python-os-vif - 1.2.1-0ubuntu1

---------------
python-os-vif (1.2.1-0ubuntu1) yakkety; urgency=medium

  * New upstream release (LP: #1621651).

 -- James Page <email address hidden> Fri, 09 Sep 2016 08:10:28 +0100

[James Page (james-page)]

This bug was fixed in the package python-os-vif - 1.2.1-0ubuntu1~cloud0
---------------

 python-os-vif (1.2.1-0ubuntu1~cloud0) xenial-newton; urgency=medium
 .
   * New upstream release for the Ubuntu Cloud Archive.
 .
 python-os-vif (1.2.1-0ubuntu1) yakkety; urgency=medium
 .
   * New upstream release (LP: #1621651).

[James Page (james-page)]

The other issue is highlighted by:

2016-09-08 21:46:45.383 26458 ERROR neutron.plugins.ml2.drivers.agent._common_agent [req-7422fadb-d790-4825-aeeb-e6bed6eee188 - - - - -] Error in agent loop. Devices info: {'current': set(['tap7e4f7c40-86', 'tap9a4ed18e-82', 'tap34eb30e9-ef', 'tap3beb1db4-6d']), 'timestamps': {'tap7e4f7c40-86': 1473371191.1141872, 'tap9a4ed18e-82': 1473371191.1141872, 'tap34eb30e9-ef': 1473371191.1141872, 'tap3beb1db4-6d': None}, 'removed': set([]), 'added': set(['tap7e4f7c40-86', 'tap9a4ed18e-82', 'tap3beb1db4-6d']), 'updated': set([u'tap7e4f7c40-86', u'tap9a4ed18e-82'])}
2016-09-08 21:46:45.383 26458 ERROR neutron.plugins.ml2.drivers.agent._common_agent Traceback (most recent call last):
2016-09-08 21:46:45.383 26458 ERROR neutron.plugins.ml2.drivers.agent._common_agent File "/usr/lib/python2.7/dist-packages/neutron/plugins/ml2/drivers/agent/_common_agent.py", line 450, in daemon_loop
2016-09-08 21:46:45.383 26458 ERROR neutron.plugins.ml2.drivers.agent._common_agent sync = self.process_network_devices(device_info)
2016-09-08 21:46:45.383 26458 ERROR neutron.plugins.ml2.drivers.agent._common_agent File "/usr/lib/python2.7/dist-packages/osprofiler/profiler.py", line 154, in wrapper
2016-09-08 21:46:45.383 26458 ERROR neutron.plugins.ml2.drivers.agent._common_agent return f(*args, **kwargs)
2016-09-08 21:46:45.383 26458 ERROR neutron.plugins.ml2.drivers.agent._common_agent File "/usr/lib/python2.7/dist-packages/neutron/plugins/ml2/drivers/agent/_common_agent.py", line 200, in process_network_devices
2016-09-08 21:46:45.383 26458 ERROR neutron.plugins.ml2.drivers.agent._common_agent device_info.get('updated'))
2016-09-08 21:46:45.383 26458 ERROR neutron.plugins.ml2.drivers.agent._common_agent File "/usr/lib/python2.7/dist-packages/neutron/agent/securitygroups_rpc.py", line 265, in setup_port_filters
2016-09-08 21:46:45.383 26458 ERROR neutron.plugins.ml2.drivers.agent._common_agent self.prepare_devices_filter(new_devices)
2016-09-08 21:46:45.383 26458 ERROR neutron.plugins.ml2.drivers.agent._common_agent File "/usr/lib/python2.7/dist-packages/neutron/agent/securitygroups_rpc.py", line 130, in decorated_function
2016-09-08 21:46:45.383 26458 ERROR neutron.plugins.ml2.drivers.agent._common_agent *args, **kwargs)
2016-09-08 21:46:45.383 26458 ERROR neutron.plugins.ml2.drivers.agent._common_agent File "/usr/lib/python2.7/dist-packages/neutron/agent/securitygroups_rpc.py", line 138, in prepare_devices_filter
2016-09-08 21:46:45.383 26458 ERROR neutron.plugins.ml2.drivers.agent._common_agent self._apply_port_filter(device_ids)
2016-09-08 21:46:45.383 26458 ERROR neutron.plugins.ml2.drivers.agent._common_agent File "/usr/lib/python2.7/dist-packages/neutron/agent/securitygroups_rpc.py", line 163, in _apply_port_filter
2016-09-08 21:46:45.383 26458 ERROR neutron.plugins.ml2.drivers.agent._common_agent self.firewall.prepare_port_filter(device)
2016-09-08 21:46:45.383 26458 ERROR neutron.plugins.ml2.drivers.agent._common_agent File "/usr/lib/python2.7/dist-packages/neutron/agent/linux/iptables_firewall.py", line 170, in prepare_port_filter
2016-09-08 21:46:45.383 26458 ERROR neutron.plugins.m...

[James Page (james-page)]

raised bug 1621854 to cover the br_netfilter issue, separate to the os-vif version problem.