Public bug reported: This issue started after [1]. The L3 agent process monitor [2] is in charge of monitoring and restarting (if needed) those child processes spawned by the agent (keepalived or keepalived-state-change, for example).
Similar to the issue found in [3], the instance of ``ProcessMonitor`` created in the ``__init__`` method is forked once the agent executes ``launch_process`` (using oslo.service "threading" backend). The instance attending the register events is not the same as the one processing them. We need to move the instantiation of this member to the ``init_host`` phase. [1]https://review.opendev.org/c/openstack/neutron/+/938404 [2]https://github.com/openstack/neutron/blob/7c478bad672ecf4897d0d201942b4526cf4b6202/neutron/agent/l3/agent.py#L274-L276 [3]https://review.opendev.org/c/openstack/neutron/+/949135 ** Affects: neutron Importance: Medium Assignee: Rodolfo Alonso (rodolfo-alonso-hernandez) Status: In Progress ** Changed in: neutron Assignee: (unassigned) => Rodolfo Alonso (rodolfo-alonso-hernandez) ** Changed in: neutron Importance: Undecided => Medium -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to neutron. https://bugs.launchpad.net/bugs/2114176 Title: [L3] L3 agent ``ProcessMonitor`` is not correctly registering the new processes Status in neutron: In Progress Bug description: This issue started after [1]. The L3 agent process monitor [2] is in charge of monitoring and restarting (if needed) those child processes spawned by the agent (keepalived or keepalived-state-change, for example). Similar to the issue found in [3], the instance of ``ProcessMonitor`` created in the ``__init__`` method is forked once the agent executes ``launch_process`` (using oslo.service "threading" backend). The instance attending the register events is not the same as the one processing them. We need to move the instantiation of this member to the ``init_host`` phase. [1]https://review.opendev.org/c/openstack/neutron/+/938404 [2]https://github.com/openstack/neutron/blob/7c478bad672ecf4897d0d201942b4526cf4b6202/neutron/agent/l3/agent.py#L274-L276 [3]https://review.opendev.org/c/openstack/neutron/+/949135 To manage notifications about this bug go to: https://bugs.launchpad.net/neutron/+bug/2114176/+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
