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Severity:
Moderate
Regression:
Yes
Blocked:
False
Blocked Reason:

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None

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Release Note Text:

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Previously, there was a maximum bulk delete limit of 10. This limit caused an issue with the PreferNoSchedule taint. With this release, the maximum bulk delete rate is disabled.
====
To remedy a bug where the cluster autoscaler can occasionally leave a node with a PreferNoSchedule taint during deletion, the maximum bulk deletion limit has been disabled.

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Previously, there was a maximum bulk delete limit of 10. This limit caused an issue with the PreferNoSchedule taint. With this release, the maximum bulk delete rate is disabled. ==== To remedy a bug where the cluster autoscaler can occasionally leave a node with a PreferNoSchedule taint during deletion, the maximum bulk deletion limit has been disabled.
Release Note Type:
Bug Fix
Release Note Status:
Done
Target Version:

4.17.z
Escape Impact:
Corrective Measures:
SDLC stage when should've been found:

This is a clone of issue OCPBUGS-42132. The following is the description of the original issue:
—
Description of problem:

    Once min-node is reached, the remain nodes' taints shouldn't have DeletionCandidateOfClusterAutoscaler

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

    4.18.0-0.nightly-arm64-2024-09-13-023103

How reproducible:

    Always

Steps to Reproduce:

    1.Create ipi cluster
    2.Create machineautoscaler and clusterautoscaler
    3.Create workload so that , scaling would happen

Actual results:

    DeletionCandidateOfClusterAutoscaler, taint are present even after min nodes are reached

Expected results:

    above taints not present on nodes once min node count is reached

Additional info:

    logs from the test - https://mastern-jenkins-csb-openshift-qe.apps.ocp-c1.prod.psi.redhat.com/job/ocp-common/job/Runner/1037951/console

We did reproduce it manually and waited around 15 mins, taint was present.

clones

OCPBUGS-42132 DeletionCandidateOfClusterAutoscaler taints not getting removed

is blocked by

OCPBUGS-42132 DeletionCandidateOfClusterAutoscaler taints not getting removed

links to

RHBA-2024:11010 OpenShift Container Platform 4.17.z bug fix update