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4.21.6

Download the installer for your operating system or run

oc adm release extract --tools quay.io/openshift-release-dev/ocp-release:4.21.6-x86_64
Team Approvals:

Tests:

Upgrades from:


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Changes from 4.21.5

Created: 2026-03-13 10:47:13 +0000 UTC

Image Digest: sha256:683c4a4eed9c4005b7d331fe0e55b5f943b1d57f40f4d4b77f059f52ad127092

Components

FeatureGate Changes

FeatureGate Default
Hypershift
Default
SelfManagedHA
DevPreviewNoUpgrade
Hypershift
DevPreviewNoUpgrade
SelfManagedHA
TechPreviewNoUpgrade
Hypershift
TechPreviewNoUpgrade
SelfManagedHA
KMSEncryptionProvider
(0 tests)
Disabled Disabled Enabled Enabled Disabled
(Changed)
Disabled
(Changed)
KMSEncryption
(0 tests)
Enabled
(New)
Enabled
(New)
Enabled
(New)
Enabled
(New)

Rebuilt images without code change

agent-installer-utils

baremetal-installer, installer, installer-artifacts

cluster-authentication-operator

cluster-config-api

cluster-etcd-operator

cluster-kube-apiserver-operator

cluster-monitoring-operator

cluster-network-operator

cluster-node-tuning-operator

cluster-olm-operator

cluster-openshift-apiserver-operator

cluster-version-operator

console

console-operator

hypershift

keepalived-ipfailover

machine-config-operator

machine-image-customization-controller

monitoring-plugin

operator-framework-tools, operator-lifecycle-manager, operator-registry

operator-marketplace

ovn-kubernetes, ovn-kubernetes-microshift

rhel-coreos, rhel-coreos-extensions

tests


Node Image Info

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Package List

Full list (565 packages)

Changed:

Extensions

Full list (162 packages)


Red Hat Enterprise Linux CoreOS base layer: 9.6.20260311-0

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