Public bug reported: In an attempt to minimize the number of connections to the OVSDBs the ML2/OVN driver no longer connects to the OVN dbs if the Neutron worker is a RpcWorker [0].
This introduced a regression where when ML2/OVN is deployed along with the Neutron DHCP server (e.g for baremetal provisioning) the DHCP agent is no longer able to create the DHCP port and fails with the following error message: 2021-07-13 13:36:18.116 17 ERROR neutron.plugins.ml2.managers Traceback (most recent call last): 2021-07-13 13:36:18.116 17 ERROR neutron.plugins.ml2.managers File "/usr/lib/python3.6/site-packages/neutron/plugins/ml2/managers.py", line 477, in _call_on_drivers 2021-07-13 13:36:18.116 17 ERROR neutron.plugins.ml2.managers getattr(driver.obj, method_name)(context) 2021-07-13 13:36:18.116 17 ERROR neutron.plugins.ml2.managers File "/usr/lib/python3.6/site-packages/networking_ovn/ml2/mech_driver.py", line 551, in create_port_precommit 2021-07-13 13:36:18.116 17 ERROR neutron.plugins.ml2.managers if self._is_port_provisioning_required(port, context.host): 2021-07-13 13:36:18.116 17 ERROR neutron.plugins.ml2.managers File "/usr/lib/python3.6/site-packages/networking_ovn/ml2/mech_driver.py", line 589, in _is_port_provisioning_required 2021-07-13 13:36:18.116 17 ERROR neutron.plugins.ml2.managers if not self._sb_ovn.chassis_exists(host): 2021-07-13 13:36:18.116 17 ERROR neutron.plugins.ml2.managers AttributeError: 'NoneType' object has no attribute 'chassis_exists' See full traceback at: http://paste.openstack.org/show/807435/ [0] https://opendev.org/openstack/neutron/commit/c4007b0833111a25d24f597161d39ee9ccd37189 ** Affects: neutron Importance: Critical Assignee: Lucas Alvares Gomes (lucasagomes) Status: Triaged ** Tags: ovn -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to neutron. https://bugs.launchpad.net/bugs/1935983 Title: [OVN] Regression when using ML2/OVN with Neutron DHCP agent Status in neutron: Triaged Bug description: In an attempt to minimize the number of connections to the OVSDBs the ML2/OVN driver no longer connects to the OVN dbs if the Neutron worker is a RpcWorker [0]. This introduced a regression where when ML2/OVN is deployed along with the Neutron DHCP server (e.g for baremetal provisioning) the DHCP agent is no longer able to create the DHCP port and fails with the following error message: 2021-07-13 13:36:18.116 17 ERROR neutron.plugins.ml2.managers Traceback (most recent call last): 2021-07-13 13:36:18.116 17 ERROR neutron.plugins.ml2.managers File "/usr/lib/python3.6/site-packages/neutron/plugins/ml2/managers.py", line 477, in _call_on_drivers 2021-07-13 13:36:18.116 17 ERROR neutron.plugins.ml2.managers getattr(driver.obj, method_name)(context) 2021-07-13 13:36:18.116 17 ERROR neutron.plugins.ml2.managers File "/usr/lib/python3.6/site-packages/networking_ovn/ml2/mech_driver.py", line 551, in create_port_precommit 2021-07-13 13:36:18.116 17 ERROR neutron.plugins.ml2.managers if self._is_port_provisioning_required(port, context.host): 2021-07-13 13:36:18.116 17 ERROR neutron.plugins.ml2.managers File "/usr/lib/python3.6/site-packages/networking_ovn/ml2/mech_driver.py", line 589, in _is_port_provisioning_required 2021-07-13 13:36:18.116 17 ERROR neutron.plugins.ml2.managers if not self._sb_ovn.chassis_exists(host): 2021-07-13 13:36:18.116 17 ERROR neutron.plugins.ml2.managers AttributeError: 'NoneType' object has no attribute 'chassis_exists' See full traceback at: http://paste.openstack.org/show/807435/ [0] https://opendev.org/openstack/neutron/commit/c4007b0833111a25d24f597161d39ee9ccd37189 To manage notifications about this bug go to: https://bugs.launchpad.net/neutron/+bug/1935983/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : [email protected] Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
