Bug 1954891

Summary: Add necessary priority class to pruner
Product: OpenShift Container Platform Reporter: ravig <rgudimet>
Component: Image RegistryAssignee: Ricardo Maraschini <rmarasch>
Status: CLOSED ERRATA QA Contact: Wenjing Zheng <wzheng>
Severity: medium Docs Contact:
Priority: medium    
Version: 4.8CC: aos-bugs, rmarasch, wewang, xiuwang
Target Milestone: ---   
Target Release: 4.8.0   
Hardware: Unspecified   
OS: Unspecified   
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Cause: Lack of priority class on image registry pruner. Consequence: Pods without priority class have no special indication on how essential they are for the correct cluster operation. These pods can be preempted more often. Fix: Provide proper priority class indication, similar priority as used for the image registry itself. Result: In cluster with high load these pods may be preempted less frequently.
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-07-27 23:04:50 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:

Description ravig 2021-04-29 02:43:38 UTC
Description of problem:

While mandating priority classes for all the components in `openshift-*` namespaces, we noticed that the following component(s) is/are missing priority class.


Following is the guidance on the which priority class to choose:

If it is fine for your operator/operand to be preempted by user workload specify and OOMKilled  use openshift-user-critical priority class
If you want your operator/operand not to be preempted by user-workload but still be OOMKilled use system-cluster-critical priority class
If you want operator/operand not be preempted by user-workload and OOMKilled last use system-node-critical priority class

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

How reproducible:

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Expected results:

Additional info:

Comment 5 Wenjing Zheng 2021-05-19 05:41:58 UTC
Verified on 4.8.0-0.nightly-2021-05-18-164623: 
 preemptionPolicy: PreemptLowerPriority
  priority: 2000000000
  priorityClassName: system-cluster-critical
  restartPolicy: Never
  schedulerName: default-scheduler

Comment 8 errata-xmlrpc 2021-07-27 23:04:50 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 (Moderate: OpenShift Container Platform 4.8.2 bug fix and security update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.