Bug 1939732

Summary:	Resource Pressure Causes Dropped Probes, Leading to Server Death
Product:	OpenShift Container Platform	Reporter:	Steve Kuznetsov <skuznets>
Component:	kube-apiserver	Assignee:	Abu Kashem <akashem>
Status:	CLOSED DUPLICATE	QA Contact:	Ke Wang <kewang>
Severity:	urgent	Docs Contact:
Priority:	high
Version:	4.7	CC:	aos-bugs, mfojtik, mharri, pmuller, wking, xxia
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Last Closed:	2021-03-29 11:57:04 UTC	Type:	Bug
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Description Steve Kuznetsov 2021-03-16 22:07:04 UTC

The Kube and OpenShift API servers have a bug where resource pressure causes flowstates to drop requests for /readyz and /healthz, causing the process to be killed. Even under pressure, the servers should continue responding to these probes.

Please see the data in this post-mortem:
https://docs.google.com/document/d/1VfwmECbpCnDTOb0JVE37wcEQm4KnGwbatgIynTa6Wvg/edit#heading=h.te8j1fpvmstb

Comment 1 W. Trevor King 2021-03-18 23:52:11 UTC

Dup of bug 1937916?

Comment 2 Michal Fojtik 2021-03-29 11:57:04 UTC


*** This bug has been marked as a duplicate of bug 1937916 ***