Bug 1809709

Summary:	Kubelet sends lots of unnecessary patch requests to the API Server
Product:	OpenShift Container Platform	Reporter:	Clayton Coleman <ccoleman>
Component:	Node	Assignee:	Clayton Coleman <ccoleman>
Status:	CLOSED ERRATA	QA Contact:	Sunil Choudhary <schoudha>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	4.4	CC:	aos-bugs, jokerman
Target Milestone:	---
Target Release:	4.5.0
Hardware:	Unspecified
OS:	Unspecified
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Clone Of:
Clones:	1809712 (view as bug list)		Environment:
Last Closed:	2020-07-13 17:17:45 UTC	Type:	Bug
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Embargoed:
Bug Depends On:
Bug Blocks:	1809712

Description Clayton Coleman 2020-03-03 18:00:41 UTC

About 50% of pod patch status calls from Kubelets are no-ops (they don't change anything). We can detect that on the client side and avoid sending them, which reduces API traffic and CPU use on masters in large clusters.

Safe change with a nice performance win.

Comment 1 Clayton Coleman 2020-03-03 18:01:06 UTC

Kube PR #88591

Comment 6 errata-xmlrpc 2020-07-13 17:17:45 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, 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-2020:2409