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Bug 1827743

Summary:	Image registry metrics should use summaries instead of histograms
Product:	OpenShift Container Platform	Reporter:	Adam Kaplan <adam.kaplan>
Component:	Image Registry	Assignee:	Oleg Bulatov <obulatov>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Wenjing Zheng <wzheng>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	3.11.0	CC:	aos-bugs, pweil
Target Milestone:	---
Target Release:	4.1.0
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	Cause: the registry used repository names in metrics labels Consequence: prometheus has problems with a lot of metrics Fix: remove repo names from labels Result: less metrics are generated	Story Points:	---
Clone Of:
Clones:	1827744 (view as bug list)		Environment:
Last Closed:	2020-05-07 11:51:21 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:	1827744

Description Adam Kaplan 2020-04-24 17:07:14 UTC

Description of problem:

Image registry metrics use Prometheus histograms, which by default can have high cardinality. These should be replaced by Summaries, which have lower cardinality and better performance.

Version-Release number of selected component (if applicable): 3.11.z


How reproducible: Always


Additional info:

Fix for 4.x - https://github.com/openshift/image-registry/pull/138

Comment 1 Adam Kaplan 2020-04-24 17:10:31 UTC

Marking VERIFIED - this was completed prior to the 4.1 release.

Comment 2 Paul Weil 2020-05-07 11:51:21 UTC

The fix referenced was merged in Dec 2018 and it is noted above that this was done in 4.1.  I am moving this to closed.