4.21.0-0.ci-2026-05-15-134309

Download the installer for your operating system or run

oc adm release extract --tools registry.ci.openshift.org/ocp/release:4.21.0-0.ci-2026-05-15-134309

Team Approvals:

Tests:

Blocking jobs
- aws-ovn-upgrade-4.21-minor Pending periodic-ci-openshift-release-main-ci-4.21-upgrade-from-stable-4.20-e2e-aws-ovn-upgrade
- azure-ovn-upgrade-4.21-minor Pending periodic-ci-openshift-release-main-ci-4.21-upgrade-from-stable-4.20-e2e-azure-ovn-upgrade
- gcp-ovn-upgrade-4.21-micro Pending periodic-ci-openshift-release-main-ci-4.21-e2e-gcp-ovn-upgrade
- hypershift-e2e-aks Failed (1 retry) periodic-ci-openshift-hypershift-release-4.21-periodics-e2e-aks
  - Attempt 1 Failed
  - Attempt 2 Failed
- hypershift-e2e-aws Succeeded periodic-ci-openshift-hypershift-release-4.21-periodics-e2e-aws-ovn
Async jobs
- claude-payload-agent Pending periodic-ci-openshift-release-main-claude-payload-agent-no-slack

Upgrades from:

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Changes from 4.21.0-0.ci-2026-05-14-021446

Created: 2026-05-15 13:43:29 +0000 UTC

Image Digest: sha256:b6b5d2d226ca9adca1c153e21f9ca31c3dddb854587e941d7c468b807a349cc1

Kubectl 1.34.1
Kubernetes upgraded from 1.34.7 to 1.34.8
Kubernetes Tests 1.34.1
Red Hat Enterprise Linux CoreOS 10.2.20260513-0

The CoreOS links above are for the base CoreOS layer used to build the OpenShift node image and do not contain OpenShift components. This is normally only useful to devs working closely with the CoreOS team. For info about the node image, see the Node Image Info section.

ovn-kubernetes git d586f851 sha256:aee2c266bf234e7002491f7b8711f47c1cfe6a4e5f997cc83130e1438a8a8c6f
ovn-kubernetes-microshift git d586f851 sha256:8c3748d0f337bb3aa03e127d8f54ee6ae35f7a3680908fb6166ba0b8dc19260e

OCPBUGS-84169: Handle zero-worker HyperShift clusters in daemonset rollout [4.21 backport] #2972
Full changelog

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Source code for this page located on github