[Bug 1927868] Re: vRouter not working after update to 16.3.1
Corey Bryant
1927868 at bugs.launchpad.net
Wed Jul 28 21:43:32 UTC 2021
We believe we've narrowed this down to a regression in the commit
"[L3][HA] Retry when setting HA router GW status". Reverting that patch
appears to have fixed this issue in our test environment so we are going
to move forward with an SRU for further testing. Full debug details can
be found in the attached document.
Thanks to Edward Hope-Morley who put a lot of time into
recreating/debugging this and also to Dmitrii Shcherbakov for helping
debug.
** Attachment added: "bug-1927868-debugging.txt"
https://bugs.launchpad.net/ubuntu/+source/neutron/+bug/1927868/+attachment/5514384/+files/bug-1927868-debugging.txt
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https://bugs.launchpad.net/bugs/1927868
Title:
vRouter not working after update to 16.3.1
Status in neutron:
New
Status in neutron package in Ubuntu:
Triaged
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.
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