Bug 1982766

Summary:	[on-prem] Make ingress keepalived check more tolerant to failures
Product:	OpenShift Container Platform	Reporter:	Martin André <m.andre>
Component:	Installer	Assignee:	Martin André <m.andre>
Installer sub component:	OpenShift on OpenStack	QA Contact:	Udi Shkalim <ushkalim>
Status:	CLOSED ERRATA	Docs Contact:
Severity:	high
Priority:	high	CC:	bperkins, itbrown, ushkalim
Version:	4.8	Keywords:	Triaged
Target Milestone:	---
Target Release:	4.9.0
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	Cause: Ingress check for keepalived didn't include fall and raise directives. Consequence: A single failed check would cause the ingress VIP failover, which can be an issue on busy platforms where the check can legitimately fails due to timeout. Fix: Use fall and raise directives to prevent VIP flapping between nodes, similar to the API VIP. Result: Single failed check no longer trigger Ingress VIP failover.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-18 17:39:54 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 Martin André 2021-07-15 16:16:24 UTC

Description of problem: We've noticed that the ingress VIP could be flapping in some environments where the keepalived check fails due to timeout. We should make the ingress check more resilient to errors and start using `fall` and `raise` to mitigate flapping as we did for the API checks.

We're seeing this issue regularly on OpenStack deployments in PSI.

Comment 4 Udi Shkalim 2021-08-10 14:38:43 UTC

Verified on: 4.9.0-0.nightly-2021-07-30-014522

Comment 7 errata-xmlrpc 2021-10-18 17:39:54 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 (Moderate: OpenShift Container Platform 4.9.0 bug fix and security update), 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/RHSA-2021:3759