4.21.0-0.ci-2026-05-21-181857

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-2026-05-21-181857

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 Succeeded periodic-ci-openshift-hypershift-release-4.21-periodics-e2e-aks
- 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:

Loading changelog, this may take a while ...

Changes from 4.21.0-0.ci-2026-05-21-121857

Created: 2026-05-21 18:21:52 +0000 UTC

Image Digest: sha256:caa49f348cd177045d63b924befd1cb33127515f89735f8173bf7880ba3b6ad6

Kubectl 1.34.1
Kubernetes 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.

rhel-coreos git 10f1a2e7 sha256:712db1b30e5dd3ceb3306f7c4ef9387e1df023a0db3da4182ee376362c4772d1
rhel-coreos-10 git 10f1a2e7 sha256:51c81c0f7e8b6f5ea1f003c0ee39aac80ca08cf7f7f01956a5d0c0456b7b7b78
rhel-coreos-10-extensions git 10f1a2e7 sha256:12edbc7cc1bb8e1ed70f0d4ec39515025e089e46618a7bd879774669f8ae1e9b
rhel-coreos-extensions git 10f1a2e7 sha256:432339958b19d289e3fc8483624a1864324ee8f2dd3019fb4acf356e6fd01603

Loading node image info, this may take a while ...

Unable to show node image info: too many concurrent oc adm release info --rpmdb/--rpmdb-diff operations (limit 16)

View changelog in Markdown or change previous release:

Source code for this page located on github