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4.21.20

Download the installer for your operating system or run

oc adm release extract --tools quay.io/openshift-release-dev/ocp-release:4.21.20-x86_64
Team Approvals:

Tests:

Upgrades from:

Untested upgrades: 4.20.19, 4.20.22, 4.21.11, 4.21.12, 4.21.14, 4.21.16, 4.21.3, 4.21.4, 4.21.5, 4.21.6, 4.21.7, 4.21.8, 4.21.9

Upgrades to:


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Changes from 4.21.18

Created: 2026-06-11 12:25:31 +0000 UTC

Image Digest: sha256:e2f30027fa1240272c8a472d6c77218ebc486bb966b6862c121187801a40163b

Components

FeatureGate Changes

FeatureGate Default
Hypershift
Default
SelfManagedHA
DevPreviewNoUpgrade
Hypershift
DevPreviewNoUpgrade
SelfManagedHA
TechPreviewNoUpgrade
Hypershift
TechPreviewNoUpgrade
SelfManagedHA
GatewayAPIWithoutOLM
(0 tests)

Rebuilt images without code change

agent-installer-api-server

agent-installer-ui

aws-ebs-csi-driver-operator, azure-disk-csi-driver-operator, azure-file-csi-driver-operator, csi-driver-manila-operator, openstack-cinder-csi-driver-operator

azure-cloud-controller-manager, azure-cloud-node-manager

baremetal-installer, installer, installer-artifacts

cloud-credential-operator

cluster-config-api

cluster-etcd-operator

cluster-ingress-operator

cluster-monitoring-operator

cluster-node-tuning-operator

console

console-operator

csi-driver-manila, openstack-cinder-csi-driver, openstack-cloud-controller-manager

haproxy-router

hyperkube, kube-proxy, pod

hypershift

insights-operator

ironic

kube-state-metrics

machine-config-operator

machine-os-images

oauth-server

oc-mirror

olm-catalogd, olm-operator-controller

openshift-apiserver

powervs-cloud-controller-manager

tests


Node Image Info

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Red Hat Enterprise Linux CoreOS (rhel-coreos)

Package List

Full list (569 packages)

Changed:

Extensions

Full list (162 packages)

Red Hat Enterprise Linux CoreOS 10.2 (rhel-coreos-10)

Package List

Full list (489 packages)

Changed:

Extensions

Full list (207 packages)


Red Hat Enterprise Linux CoreOS base layer: 10.2.20260521-0

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