Bug 2117569 - kube-controller-manager needs to stop watching all events
Summary: kube-controller-manager needs to stop watching all events
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: OpenShift Container Platform
Classification: Red Hat
Component: kube-controller-manager
Version: 4.12
Hardware: Unspecified
OS: Unspecified
urgent
urgent
Target Milestone: ---
: 4.12.0
Assignee: Ben Luddy
QA Contact: zhou ying
URL:
Whiteboard:
Depends On:
Blocks: 2117679 2118318
TreeView+ depends on / blocked
 
Reported: 2022-08-11 10:42 UTC by Michal Fojtik
Modified: 2023-01-17 19:55 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Event objects in the events.k8s.io/v1 group were unnecessarily being watched by the garbage collection controller. In a case of unbound Event creation (e.g. due to a runaway controller), this could result in degraded performance. The garbage collection controller now ignores Events.
Clone Of:
: 2118318 (view as bug list)
Environment:
Last Closed: 2023-01-17 19:54:46 UTC
Target Upstream Version:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Github openshift kubernetes pull 1338 0 None Merged Bug 2117569: UPSTREAM: 110888: feat: fix a bug thaat not all event be ignored by gc controller 2023-01-19 12:39:27 UTC
Red Hat Product Errata RHSA-2022:7399 0 None None None 2023-01-17 19:55:07 UTC

Description Michal Fojtik 2022-08-11 10:42:49 UTC 
Description of problem:

The garbage collector must ignore ALL events; otherwise, if a rouge controller or a workload causes unbound event creation, GC performance will degrade as it has to process the events.

Fix: https://github.com/openshift/kubernetes/pull/1338

This bug is to track fix in master (4.12) and also allow to backport to 4.11.1

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


How reproducible:


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Additional info:
Comment 6 errata-xmlrpc 2023-01-17 19:54:46 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 4.12.0 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.

https://access.redhat.com/errata/RHSA-2022:7399
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