Bug 1950934

Summary:	Unnecessary rollouts can happen due to unsorted endpoints
Product:	OpenShift Container Platform	Reporter:	Lili Cosic <lcosic>
Component:	Etcd	Assignee:	Lili Cosic <lcosic>
Status:	CLOSED ERRATA	QA Contact:	ge liu <geliu>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	4.8
Target Milestone:	---
Target Release:	4.8.0
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	No Doc Update
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-07-27 23:01:42 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:
Bug Depends On:
Bug Blocks:	1951447

Description Lili Cosic 2021-04-19 08:42:46 UTC

Description of problem:

Because we do not sort the etcd gRPC endpoints every time we get the endpoints we can do multiple not-needed rollouts as the endpoints could being the same they are just returned in a different order. 

See comment https://bugzilla.redhat.com/show_bug.cgi?id=1948533#c16 for a demo of how this looks like in practice.


Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
https://bugzilla.redhat.com/show_bug.cgi?id=1948533#c16

Actual results:


Expected results:

If no endpoints change, no rollout should be triggered.


Additional info:

Comment 2 ge liu 2021-06-11 09:49:39 UTC

Verified with 4.8.0-0.nightly-2021-06-09-023740, there is not so many etcd rollouts msg in log.

Comment 5 errata-xmlrpc 2021-07-27 23:01:42 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 4.8.2 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-2021:2438