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4.21.6

PullSpec:

quay.io/openshift-release-dev/ocp-release:4.21.6-multi
Team Approvals:

Tests:

Upgrades from:

Untested upgrades: 4.20.13, 4.20.14, 4.20.15, 4.20.16, 4.21.0, 4.21.1, 4.21.2, 4.21.3, 4.21.4

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Changes from 4.21.5

Created: 2026-03-13 10:46:19 +0000 UTC

Image Digest: sha256:dcb88ac024808f8c2539ff25fdfbd254f18c4c9556db57990001ff89998f1e54

Release 4.21.6 was created from quay.io/openshift-release-dev/ocp-release-nightly@sha256:731d0ef0f340c28960b91a0a3dc744e3e7ea28f1a38cb6346d344bc85c9a83a0

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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