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4.21.0-ec.3

Download the installer for your operating system or run

oc adm release extract --tools quay.io/openshift-release-dev/ocp-release:4.21.0-ec.3-x86_64
Team Approvals:

Tests:

Upgrades from:

Untested upgrades: 4.20.3, 4.20.4, 4.21.0-ec.0, 4.21.0-ec.2

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Changes from 4.21.0-ec.2

Created: 2025-11-19 02:38:41 +0000 UTC

Image Digest: sha256:e3a750749770f4435360852de7c566e370bef20ad90cdc1446e8ac84e4728e49

Components

FeatureGate Changes

FeatureGate Default
Hypershift
Default
SelfManagedHA
DevPreviewNoUpgrade
Hypershift
DevPreviewNoUpgrade
SelfManagedHA
TechPreviewNoUpgrade
Hypershift
TechPreviewNoUpgrade
SelfManagedHA
NewOLMWebhookProviderOpenshiftServiceCA
(0 tests)
Disabled Enabled
(Changed)
Disabled Enabled Disabled Enabled
BootImageSkewEnforcement
(0 tests)
Disabled Disabled Enabled Enabled Enabled
(Changed)
Enabled
(Changed)
IngressControllerDynamicConfigurationManager
(0 tests)
Disabled Disabled Enabled Enabled Disabled
(Changed)
Disabled
(Changed)
CRDCompatibilityRequirementOperator
(0 tests)
Enabled
(New)
Enabled
(New)
Enabled
(New)
Enabled
(New)
ClusterAPIMachineManagement
(0 tests)
Enabled
(New)
Enabled
(New)
Enabled
(New)
Enabled
(New)
MutableCSINodeAllocatableCount
(0 tests)
Enabled
(New)
Enabled
(New)
Enabled
(New)
Enabled
(New)
OSStreams
(0 tests)
Enabled
(New)
Enabled
(New)
Enabled
(New)
Enabled
(New)

Rebuilt images without code change

agent-installer-api-server

agent-installer-csr-approver, agent-installer-orchestrator

agent-installer-node-agent

agent-installer-ui

agent-installer-utils

aws-cloud-controller-manager

aws-ebs-csi-driver

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

aws-machine-controllers

aws-pod-identity-webhook

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

azure-machine-controllers

baremetal-installer, installer, installer-artifacts

cli, cli-artifacts, deployer, tools

cloud-credential-operator

cloud-network-config-controller

cluster-authentication-operator

cluster-autoscaler

cluster-autoscaler-operator

cluster-baremetal-operator

cluster-capi-operator

cluster-cloud-controller-manager-operator

cluster-config-api

cluster-control-plane-machine-set-operator

cluster-csi-snapshot-controller-operator

cluster-etcd-operator

cluster-ingress-operator

cluster-kube-apiserver-operator

cluster-kube-cluster-api-operator

cluster-kube-controller-manager-operator

cluster-machine-approver

cluster-monitoring-operator

cluster-network-operator

cluster-node-tuning-operator

cluster-olm-operator

cluster-openshift-controller-manager-operator

cluster-samples-operator

cluster-storage-operator

cluster-version-operator

console

console-operator

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

csi-external-attacher

csi-external-provisioner

csi-external-resizer

csi-livenessprobe

csi-node-driver-registrar

docker-builder

etcd

gcp-cloud-controller-manager

gcp-machine-controllers

gcp-pd-csi-driver

hyperkube, kube-proxy, pod

hypershift

ibm-cloud-controller-manager

ibm-vpc-block-csi-driver

insights-operator

ironic

ironic-agent

keepalived-ipfailover

kube-rbac-proxy

kubevirt-cloud-controller-manager

kubevirt-csi-driver

libvirt-machine-controllers

machine-api-operator

machine-config-operator

machine-os-images

metallb-frr

monitoring-plugin

multus-networkpolicy

must-gather

network-metrics-daemon

network-tools

networking-console-plugin

nutanix-machine-controllers

oauth-apiserver

oauth-proxy

oauth-server

oc-mirror

olm-catalogd, olm-operator-controller

openshift-apiserver

openshift-controller-manager

openstack-resource-controller

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

operator-marketplace

ovn-kubernetes, ovn-kubernetes-microshift

powervs-block-csi-driver-operator

powervs-machine-controllers

prometheus-alertmanager

prometheus-config-reloader, prometheus-operator, prometheus-operator-admission-webhook

prometheus-node-exporter

route-controller-manager

service-ca-operator

tests

vsphere-csi-driver-operator

vsphere-problem-detector


Node Image Info

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Package List

Full list (564 packages)

Changed:

Extensions

Full list (162 packages)


Red Hat Enterprise Linux CoreOS base layer: 9.6.20251112-0

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