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Bug 1798461

Summary:	kube-aggregator: unavailableGauge is wrong
Product:	OpenShift Container Platform	Reporter:	Lukasz Szaszkiewicz <lszaszki>
Component:	kube-apiserver	Assignee:	Lukasz Szaszkiewicz <lszaszki>
Status:	CLOSED ERRATA	QA Contact:	Ke Wang <kewang>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	4.3.0	CC:	aos-bugs, mfojtik, xxia
Target Milestone:	---
Target Release:	4.3.z
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:	1798450	Environment:
Last Closed:	2020-05-20 13:47:53 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:	1798450
Bug Blocks:

Description Lukasz Szaszkiewicz 2020-02-05 12:12:50 UTC

+++ This bug was initially created as a clone of Bug #1798450 +++

unavailableGauge metric is not always set and might report incorrect values especially in an HA setup where one instance could observe and mark a service as unavailable whereas some other instance might observe it as available. That would prevent the first instance from reflecting that state since it wouldn't observe any changes

Comment 3 Ke Wang 2020-05-12 07:17:41 UTC

Verified with OCP build 4.3.0-0.nightly-2020-05-07-171148,

Verification steps,
1. Make some apiservice fail, e.g. remove openshift-apiserver by:
$ oc patch openshiftapiserver cluster --type=json -p '[{"op": "replace", "path": "/spec/managementState", "value": "Removed"}]'
 
2. Wait for a while(about half an hour), Recover the apiservice.
$ oc patch openshiftapiserver cluster --type=json -p '[{"op": "replace", "path": "/spec/managementState", "value": "Managed"}]'

3. Open the prometheus UI from OCP web console, enter keyword ‘aggregator_unavailable_apiservice_count’  and Click on'Exuecte', navigate to Console tab, some unavailable apiservices will be displayed with name and count.

Comment 5 errata-xmlrpc 2020-05-20 13:47:53 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-2020:2129