Public bug reported: 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. ** Affects: neutron (Ubuntu) Importance: Undecided Status: Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1927868 Title: vRouter not working after update to 16.3.1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/neutron/+bug/1927868/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs