Bug 2009092

Summary:	Kubelet logging "Pod attempted illegal phase transition"
Product:	OpenShift Container Platform	Reporter:	Elana Hashman <ehashman>
Component:	Node	Assignee:	Elana Hashman <ehashman>
Node sub component:	Kubelet	QA Contact:	Weinan Liu <weinliu>
Status:	CLOSED DUPLICATE	Docs Contact:
Severity:	medium
Priority:	medium	CC:	aos-bugs, ccoleman, ehashman, rphillips, wking
Version:	4.9
Target Milestone:	---
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Last Closed:	2021-10-13 14:32:03 UTC	Type:	Bug
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Description Elana Hashman 2021-09-29 23:05:29 UTC

Description of problem:

In a couple of 4.9 bugs, we've seen instances where the kubelet is logging that a pod attempted an illegal phase transition, e.g.

https://bugzilla.redhat.com/show_bug.cgi?id=1998193#c16
https://bugzilla.redhat.com/show_bug.cgi?id=1997478#c25

I suspect this may be related to the 4.9 pod lifecycle refactor, as this doesn't appear to have been present in earlier versions.

This log message is invoked here: https://github.com/openshift/kubernetes/blob/f181eb2582e1649676395f25710c14b427b3369c/pkg/kubelet/kubelet_pods.go#L1480-L1484

It's only possible when a terminal pod (failed or succeeded) attempts a phase transition.


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

OpenShift 4.9

How reproducible:

Unclear

Steps to Reproduce:
1.
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Actual results:


Expected results:


Additional info:

Comment 1 Elana Hashman 2021-10-05 22:26:00 UTC

We saw that some Pods were returning to Running or Pending in https://github.com/kubernetes/kubernetes/issues/105358

Let's see if openshift/kubernetes#999 fixes this.

Comment 2 Ryan Phillips 2021-10-13 14:32:03 UTC


*** This bug has been marked as a duplicate of bug 2011513 ***