This bug was fixed in the package neutron - 2:16.4.0-0ubuntu3~cloud0 ---------------
neutron (2:16.4.0-0ubuntu3~cloud0) bionic-ussuri; urgency=medium . * New update for the Ubuntu Cloud Archive. . neutron (2:16.4.0-0ubuntu3) focal; urgency=medium . * d/p/revert-l3-ha-retry-when-setting-ha-router-gw-status.patch: Revert upstream patch that introduced regression that prevented full restore of HA routers on restart of L3 agent (LP: #1927868). ** Changed in: cloud-archive/ussuri Status: Fix Committed => Fix Released -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to neutron. https://bugs.launchpad.net/bugs/1927868 Title: vRouter not working after update to 16.3.1 Status in Ubuntu Cloud Archive: Fix Released Status in Ubuntu Cloud Archive train series: Fix Committed Status in Ubuntu Cloud Archive ussuri series: Fix Released Status in Ubuntu Cloud Archive victoria series: Fix Committed Status in Ubuntu Cloud Archive wallaby series: Fix Committed Status in Ubuntu Cloud Archive xena series: Fix Released Status in neutron: New Status in oslo.privsep: New Status in neutron package in Ubuntu: Fix Released Status in neutron source package in Focal: Fix Committed Status in neutron source package in Hirsute: Fix Committed Status in neutron source package in Impish: Fix Released Bug description: We run a juju managed Openstack Ussuri on Bionic. After updating neutron packages from 16.3.0 to 16.3.1 all virtual routers stopped working. It seems that most (not all) namespaces are created but have only the lo interface and sometime the ha-XYZ interface in DOWN state. The underlying tap interfaces are also in down. neutron-l3-agent has many logs similar to the following: 2021-05-08 15:01:45.286 39411 ERROR neutron.agent.l3.ha_router [-] Gateway interface for router 02945b59-639b-41be-8237-3b7933b4e32d was not set up; router will not work properly and journal logs report at around the same time May 08 15:01:40 lar1615.srv-louros.grnet.gr neutron-keepalived-state-change[18596]: 2021-05-08 15:01:40.765 18596 INFO neutron.agent.linux.ip_lib [-] Failed sending gratuitous ARP to 62.62.62.62 on qg-5a6efe8c-6b in namespace qrouter-02945b59-639b-41be-8237-3b7933b4e32d: Exit code: 2; Stdin: ; Stdout: Interface "qg-5a6efe8c-6b" is down May 08 15:01:40 lar1615.srv-louros.grnet.gr neutron-keepalived-state-change[18596]: 2021-05-08 15:01:40.767 18596 INFO neutron.agent.linux.ip_lib [-] Interface qg-5a6efe8c-6b or address 62.62.62.62 in namespace qrouter-02945b59-639b-41be-8237-3b7933b4e32d was deleted concurrently The neutron packages installed are: ii neutron-common 2:16.3.1-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - common ii neutron-dhcp-agent 2:16.3.1-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - DHCP agent ii neutron-l3-agent 2:16.3.1-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - l3 agent ii neutron-metadata-agent 2:16.3.1-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - metadata agent ii neutron-metering-agent 2:16.3.1-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - metering agent ii neutron-openvswitch-agent 2:16.3.1-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - Open vSwitch plugin agent ii python3-neutron 2:16.3.1-0ubuntu1~cloud0 all Neutron is a virtual network service for Openstack - Python library ii python3-neutron-lib 2.3.0-0ubuntu1~cloud0 all Neutron shared routines and utilities - Python 3.x ii python3-neutronclient 1:7.1.1-0ubuntu1~cloud0 all client API library for Neutron - Python 3.x Downgrading to 16.3.0 resolves the issues. ================================= Ubuntu SRU details: [Impact] See above. [Test Case] Deploy openstack with l3ha and create several HA routers, the number required varies per environment. It is probably best to deploy a known bad version of the package, ensure it is failing, upgrade to the version in proposed, and re-test several times to confirm it is fixed. Restarting neutron-l3-agent should expect all HA Routers are restored. [Regression Potential] This change is fixing a regression by reverting a patch that was introduced in a stable point release of neutron. To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-archive/+bug/1927868/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp