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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-s390x
Team Approvals:

No tests for this release

Upgrades from:

Untested upgrades: 4.20.15, 4.20.16, 4.20.17, 4.20.18, 4.20.19, 4.20.20, 4.20.21, 4.20.22, 4.20.23, 4.20.24, 4.20.25, 4.21.0, 4.21.1, 4.21.10, 4.21.11, 4.21.12, 4.21.13, 4.21.14, 4.21.15, 4.21.16, 4.21.17, 4.21.18, 4.21.19, 4.21.2, 4.21.3, 4.21.4, 4.21.5, 4.21.6, 4.21.7, 4.21.8, 4.21.9

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Changes from 4.21.19

Created: 2026-06-11 12:23:39 +0000 UTC

Image Digest: sha256:84aafe31c3f70600df9b6466f6d1f758701c46ef306105af008964478a8e1431

Components

Rebuilt images without code change

agent-installer-api-server

aws-cloud-controller-manager, aws-cluster-api-controllers, aws-ebs-csi-driver, aws-ebs-csi-driver-operator, aws-machine-controllers, aws-pod-identity-webhook, azure-cloud-controller-manager, azure-cloud-node-manager, azure-cluster-api-controllers, azure-disk-csi-driver, azure-disk-csi-driver-operator, azure-file-csi-driver, azure-file-csi-driver-operator, azure-machine-controllers, azure-workload-identity-webhook, csi-driver-manila, csi-driver-manila-operator, csi-driver-nfs, gcp-cloud-controller-manager, gcp-cluster-api-controllers, gcp-machine-controllers, gcp-pd-csi-driver, gcp-pd-csi-driver-operator, hyperkube, ironic, ironic-agent, ironic-machine-os-downloader, ironic-static-ip-manager, kube-proxy, machine-image-customization-controller, nutanix-cloud-controller-manager, nutanix-machine-controllers, pod, powervs-block-csi-driver, powervs-block-csi-driver-operator, powervs-cloud-controller-manager, powervs-machine-controllers, vsphere-cloud-controller-manager, vsphere-cluster-api-controllers, vsphere-csi-driver, vsphere-csi-driver-operator, vsphere-csi-driver-syncer, vsphere-problem-detector

baremetal-installer, installer, installer-artifacts

cluster-ingress-operator

cluster-monitoring-operator

cluster-node-tuning-operator

console

haproxy-router

hypershift

insights-operator

machine-config-operator

machine-os-images

oauth-server

olm-catalogd, olm-operator-controller

openshift-apiserver

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

tests


Node Image Info

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Red Hat Enterprise Linux CoreOS (rhel-coreos)

Package List

Full list (541 packages)

Changed:

Extensions

Full list (143 packages)

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

Package List

Full list (520 packages)

Changed:

Extensions

Full list (141 packages)


Red Hat Enterprise Linux CoreOS base layer: 10.2.20260521-0

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