Bug 1921652

Summary:	Data plane disruption during FFU from non-DVR OSP 13 with OVN
Product:	Red Hat OpenStack	Reporter:	Jakub Libosvar <jlibosva>
Component:	openstack-tripleo-heat-templates	Assignee:	Lukas Bezdicka <lbezdick>
Status:	CLOSED ERRATA	QA Contact:	Jesse Pretorius <jpretori>
Severity:	high	Docs Contact:
Priority:	high
Version:	16.1 (Train)	CC:	aschultz, jpretori, lbezdick, mburns, omcgonag, spower
Target Milestone:	z6	Keywords:	Triaged
Target Release:	16.1 (Train on RHEL 8.2)
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	openstack-tripleo-heat-templates-11.3.2-1.20210310113344.29a02c1.el8ost	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-05-26 13:50:38 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Jakub Libosvar 2021-01-28 11:50:48 UTC

Description of problem:
When performing FFU and doing leapp on network node, docker stop doesn't deleted network node chassis from OVN databases. Given that ovn BFD interfaces persist on the node node can still host gateways after the reboot even though there is no ovn-controller running. This causes problems for gateways that are bound to this node and leads to FIP outage until network node is installed with OSP 16 bits.

Version-Release number of selected component (if applicable):
OSP13 -> OSP16 FFU

How reproducible:
Always with non-DVR environment and 2 network nodes


Actual results:
The network node stays in the chassis table even when ovn-controller is uninstalled.

Expected results:
The network node should be removed from the chassis table if it's not capable of operating.

Additional info:

Comment 11 Jesse Pretorius 2021-05-13 09:46:55 UTC

Verified with openstack-tripleo-heat-templates-11.3.2-1.20210408163453.el8ost.noarch using CI job in the staging environment. Ping results remain consistent throughout the FFU process.

Comment 18 errata-xmlrpc 2021-05-26 13:50:38 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Red Hat OpenStack Platform 16.1.6 bug fix and enhancement advisory), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2021:2097