This is a clone of issue OCPBUGS-27817. The following is the description of the original issue:
—
Description of problem:
When performing upgrades on ROSA HCP clusters with a large number of worker nodes (> 51), the Kube APIServer pods of the cluster use up memory exceeding the capacity of their nodes, resulting in OOMKills.
Version-Release number of selected component (if applicable):
4.14, 4.15
How reproducible:
always
Steps to Reproduce:
1. Create ROSA HCP Cluster 2. Add 100 workers to Cluster 3. Upgrade the cluster
Actual results:
Kube APIServer pods are OOMKilled
Expected results:
Upgrade completes successfully
Additional info:
- blocks
-
OCPBUGS-29206 High memory usage by Kube APIServer on HostedCluster upgrades
- Closed
- clones
-
OCPBUGS-27817 High memory usage by Kube APIServer on HostedCluster upgrades
- Closed
- is blocked by
-
OCPBUGS-27817 High memory usage by Kube APIServer on HostedCluster upgrades
- Closed
- is cloned by
-
OCPBUGS-29206 High memory usage by Kube APIServer on HostedCluster upgrades
- Closed
- links to
-
RHSA-2023:7198 OpenShift Container Platform 4.15 security update