Unable to use 'cni' driver with Linux bridge network

[Andrew Bonney]

On a system which isn't running OVS, Zun appears to have a missing piece when configured to use the 'cni' driver for containers or the 'cri' driver for capsules.

I receive the following traceback when attempting to start a container:

Dec 01 08:48:51 aio1 zun-compute[11226]: Traceback (most recent call last):
Dec 01 08:48:51 aio1 zun-compute[11226]: File "/openstack/venvs/zun-22.0.0.0b2.dev20/lib/python3.6/site-packages/zun/network/os_vif_util.py", line 236, in neutron_to_osvif_vif
Dec 01 08:48:51 aio1 zun-compute[11226]: mgr = _VIF_MANAGERS[vif_translator]
Dec 01 08:48:51 aio1 zun-compute[11226]: KeyError: 'bridge'
Dec 01 08:48:51 aio1 zun-compute[11226]: During handling of the above exception, another exception occurred:
Dec 01 08:48:51 aio1 zun-compute[11226]: Traceback (most recent call last):
Dec 01 08:48:51 aio1 zun-compute[11226]: File "/openstack/venvs/zun-22.0.0.0b2.dev20/lib/python3.6/site-packages/eventlet/hubs/hub.py", line 461, in fire_timers
Dec 01 08:48:51 aio1 zun-compute[11226]: timer()
Dec 01 08:48:51 aio1 zun-compute[11226]: File "/openstack/venvs/zun-22.0.0.0b2.dev20/lib/python3.6/site-packages/eventlet/hubs/timer.py", line 59, in __call__
Dec 01 08:48:51 aio1 zun-compute[11226]: cb(*args, **kw)
Dec 01 08:48:51 aio1 zun-compute[11226]: File "/openstack/venvs/zun-22.0.0.0b2.dev20/lib/python3.6/site-packages/zun/common/utils.py", line 211, in context_wrapper
Dec 01 08:48:51 aio1 zun-compute[11226]: func(*args, **kwargs)
Dec 01 08:48:51 aio1 zun-compute[11226]: File "/openstack/venvs/zun-22.0.0.0b2.dev20/lib/python3.6/site-packages/oslo_concurrency/lockutils.py", line 360, in inner
Dec 01 08:48:51 aio1 zun-compute[11226]: return f(*args, **kwargs)
Dec 01 08:48:51 aio1 zun-compute[11226]: File "/openstack/venvs/zun-22.0.0.0b2.dev20/lib/python3.6/site-packages/zun/compute/manager.py", line 302, in do_container_create
Dec 01 08:48:51 aio1 zun-compute[11226]: pci_requests, limits)
Dec 01 08:48:51 aio1 zun-compute[11226]: File "/openstack/venvs/zun-22.0.0.0b2.dev20/lib/python3.6/site-packages/zun/common/utils.py", line 657, in decorated_function
Dec 01 08:48:51 aio1 zun-compute[11226]: return function(self, context, *args, **kwargs)
Dec 01 08:48:51 aio1 zun-compute[11226]: File "/openstack/venvs/zun-22.0.0.0b2.dev20/lib/python3.6/site-packages/zun/compute/manager.py", line 402, in _do_container_create
Dec 01 08:48:51 aio1 zun-compute[11226]: limits)
Dec 01 08:48:51 aio1 zun-compute[11226]: File "/openstack/venvs/zun-22.0.0.0b2.dev20/lib/python3.6/site-packages/zun/compute/manager.py", line 389, in _do_container_create_base
Dec 01 08:48:51 aio1 zun-compute[11226]: unset_host=True)
Dec 01 08:48:51 aio1 zun-compute[11226]: File "/openstack/venvs/zun-22.0.0.0b2.dev20/lib/python3.6/site-packages/oslo_utils/excutils.py", line 220, in __exit__
Dec 01 08:48:51 aio1 zun-compute[11226]: self.force_reraise()
Dec 01 08:48:51 aio1 zun-compute[11226]: File "/openstack/venvs/zun-22.0.0.0b2.dev20/lib/python3.6/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
Dec 01 08:48:51 aio1 zun-compute[11226]: six.reraise(self.type_, self.value, self.tb)
Dec 01 08:48:51 aio1 zun-compute[11226]: File "/openstack/venvs/zun-22.0.0.0b2.dev20/lib/python3.6/site-packages/six.py", line 703, in reraise
Dec 01 08:48:51 aio1 zun-compute[11226]: raise value
Dec 01 08:48:51 aio1 zun-compute[11226]: File "/openstack/venvs/zun-22.0.0.0b2.dev20/lib/python3.6/site-packages/zun/compute/manager.py", line 376, in _do_container_create_base
Dec 01 08:48:51 aio1 zun-compute[11226]: requested_volumes)
Dec 01 08:48:51 aio1 zun-compute[11226]: File "/openstack/venvs/zun-22.0.0.0b2.dev20/lib/python3.6/site-packages/zun/container/docker/driver.py", line 306, in create
Dec 01 08:48:51 aio1 zun-compute[11226]: security_group_ids=security_group_ids)
Dec 01 08:48:51 aio1 zun-compute[11226]: File "/openstack/venvs/zun-22.0.0.0b2.dev20/lib/python3.6/site-packages/zun/network/cni_network.py", line 106, in process_networking_config
Dec 01 08:48:51 aio1 zun-compute[11226]: subnets)
Dec 01 08:48:51 aio1 zun-compute[11226]: File "/openstack/venvs/zun-22.0.0.0b2.dev20/lib/python3.6/site-packages/zun/network/os_vif_util.py", line 240, in neutron_to_osvif_vif
Dec 01 08:48:51 aio1 zun-compute[11226]: name=vif_translator, invoke_on_load=False)
Dec 01 08:48:51 aio1 zun-compute[11226]: File "/openstack/venvs/zun-22.0.0.0b2.dev20/lib/python3.6/site-packages/stevedore/driver.py", line 61, in __init__
Dec 01 08:48:51 aio1 zun-compute[11226]: warn_on_missing_entrypoint=warn_on_missing_entrypoint
Dec 01 08:48:51 aio1 zun-compute[11226]: File "/openstack/venvs/zun-22.0.0.0b2.dev20/lib/python3.6/site-packages/stevedore/named.py", line 90, in __init__
Dec 01 08:48:51 aio1 zun-compute[11226]: self._init_plugins(extensions)
Dec 01 08:48:51 aio1 zun-compute[11226]: File "/openstack/venvs/zun-22.0.0.0b2.dev20/lib/python3.6/site-packages/stevedore/driver.py", line 113, in _init_plugins
Dec 01 08:48:51 aio1 zun-compute[11226]: (self.namespace, name))
Dec 01 08:48:51 aio1 zun-compute[11226]: stevedore.exception.NoMatches: No 'zun.vif_translators' driver found, looking for 'bridge'

As far as I can see from https://github.com/openstack/zun/blob/master/setup.cfg#L83 there is currently no 'vif_translator' available for the 'bridge' type.

Is there a way around this which I am missing, or has this not been implemented? At present my workaround is to use 'kuryr' for containers and 'docker' for capsules.

[hongbin (hongbin034)]

CNI linux bridge driver is not implemented yet. Will do it as soon as possible.

[Benoit (flamesterz)]

I wrongly click... this bug should be set to confirmed.

Thank you,