4.21.0-0.ci-2026-05-28-225504

Download the installer for your operating system or run

oc adm release extract --tools quay-proxy.ci.openshift.org/openshift/ci:rc_payload__4.21.0-0.ci-2026-05-28-225504

Team Approvals:

Tests:

Blocking jobs
- aws-ovn-upgrade-4.21-minor Succeeded periodic-ci-openshift-release-main-ci-4.21-upgrade-from-stable-4.20-e2e-aws-ovn-upgrade
- azure-ovn-upgrade-4.21-minor Succeeded periodic-ci-openshift-release-main-ci-4.21-upgrade-from-stable-4.20-e2e-azure-ovn-upgrade
- gcp-ovn-upgrade-4.21-micro Succeeded 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 Succeeded periodic-ci-openshift-release-main-claude-payload-agent-no-slack

Upgrades from:

Upgrades to:

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Changes from 4.21.0-0.ci-2026-05-28-151209

Created: 2026-05-28 22:55:11 +0000 UTC

Image Digest: sha256:c5e14b319729404d607334fa98d49b9fdc47c947d0b1909eb5884f4a887b8442

Kubectl 1.34.1
Kubernetes 1.34.8
Kubernetes Tests 1.34.1
Red Hat Enterprise Linux CoreOS 10.2.20260521-0

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:b7beb7f05b9bba09ae6017b30126736c9d3f3f8c1ca4b0896fbc149877fb9b78
rhel-coreos-10 git 10f1a2e7 sha256:0e94caa890970fdba1e8bc1c021b5d9386e0d76b8cbf3cc20a18c719c660dbbd
rhel-coreos-10-extensions git 10f1a2e7 sha256:c94d68db4d2fe83b6da98e165975bebc459ec36cf27d2d66b1ad874aec23e349
rhel-coreos-extensions git 10f1a2e7 sha256:2cda5a30b0100ffc5bc81701b18168b2a3b9f2e519d644176ffa279413012867

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