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Bug 1982873

Summary:	4.8 ManagementCPUsOverride admission plugin blocks 4.7 deployments on empty topology
Product:	OpenShift Container Platform	Reporter:	W. Trevor King <wking>
Component:	Node	Assignee:	Joel Smith <joelsmith>
Node sub component:	Autoscaler (HPA, VPA)	QA Contact:	Sunil Choudhary <schoudha>
Status:	CLOSED NOTABUG	Docs Contact:
Severity:	low
Priority:	low	CC:	aos-bugs, schoudha
Version:	4.8	Keywords:	Reopened
Target Milestone:	---
Target Release:	4.9.0
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:	1982868	Environment:
Last Closed:	2021-07-16 18:54:31 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1982868

Description W. Trevor King 2021-07-15 21:28:44 UTC

+++ This bug was initially created as a clone of Bug #1982868 +++

...
So to support rollbacks to 4.7, the 4.8 admission plugin probably needs to locally hard-code the CRD's 'HighlyAvailable' default.  There are no 4.9-direct-to-4.7 rollbacks, so we don't need to touch master/4.9.

Checking a 4.8->4.9->4.8 rollback job [1,2], that rollback actually completed, and the job failed because of some less-critical noise.  So the topology thing is not an issue on master/4.9.

[1]: https://testgrid.k8s.io/redhat-openshift-ocp-release-4.9-informing#periodic-ci-openshift-release-master-ci-4.9-upgrade-from-stable-4.8-e2e-aws-upgrade-rollback
[1]: https://prow.ci.openshift.org/view/gs/origin-ci-test/logs/periodic-ci-openshift-release-master-ci-4.9-upgrade-from-stable-4.8-e2e-aws-upgrade-rollback/1415354016509988864

Comment 1 W. Trevor King 2021-07-16 18:54:31 UTC

We can go back to NOTABUG now that bug 1982868 has been closed as a dup of 1977351; sorry for the noise.