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4.21.17

Download the installer for your operating system or run

oc adm release extract --tools quay.io/openshift-release-dev/ocp-release:4.21.17-x86_64
Team Approvals:

Tests:

Upgrades from:

Untested upgrades: 4.21.11, 4.21.12, 4.21.3, 4.21.4, 4.21.5, 4.21.6, 4.21.7, 4.21.8

Upgrades to:


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Changes from 4.21.9

Created: 2026-05-21 19:24:17 +0000 UTC

Image Digest: sha256:52a9c863ddc434eedee8c0e75cf610805db2b6b91502688857bc8afa62ed1dd6

Components

FeatureGate Changes

FeatureGate Default
Hypershift
Default
SelfManagedHA
DevPreviewNoUpgrade
Hypershift
DevPreviewNoUpgrade
SelfManagedHA
TechPreviewNoUpgrade
Hypershift
TechPreviewNoUpgrade
SelfManagedHA
EventTTL
(0 tests)
Enabled
(Changed)
Enabled
(Changed)
Enabled Enabled Enabled Enabled

Removed images

Rebuilt images without code change

agent-installer-api-server

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

agent-installer-ui

agent-installer-utils

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-kms-encryption-provider

azure-cluster-api-controllers

azure-disk-csi-driver

azure-file-csi-driver

azure-kms-encryption-provider

azure-service-operator

baremetal-installer, installer, installer-artifacts

baremetal-operator

cluster-authentication-operator

cluster-baremetal-operator

cluster-capi-controllers

cluster-capi-operator

cluster-config-api

cluster-csi-snapshot-controller-operator

cluster-etcd-operator

cluster-ingress-operator

cluster-kube-apiserver-operator

cluster-kube-scheduler-operator

cluster-monitoring-operator

cluster-network-operator

cluster-node-tuning-operator

cluster-olm-operator

cluster-storage-operator

console

console-operator

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

csi-driver-nfs

csi-external-attacher

csi-external-provisioner

gcp-cloud-controller-manager

gcp-cluster-api-controllers

gcp-machine-controllers

gcp-pd-csi-driver

hyperkube, kube-proxy, pod

hypershift

ibm-vpc-block-csi-driver

insights-operator

insights-runtime-exporter, insights-runtime-extractor

ironic

kube-metrics-server

kube-state-metrics

machine-api-operator

machine-config-operator

machine-os-images

monitoring-plugin

multus-cni, multus-cni-microshift

must-gather

networking-console-plugin

oc-mirror

olm-catalogd, olm-operator-controller

openstack-cluster-api-controllers

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

ovn-kubernetes, ovn-kubernetes-microshift

powervs-block-csi-driver

prometheus

rhel-coreos, rhel-coreos-10, rhel-coreos-10-extensions, rhel-coreos-extensions

telemeter

tests

thanos

vsphere-cluster-api-controllers

vsphere-csi-driver, vsphere-csi-driver-syncer


Node Image Info

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Red Hat Enterprise Linux CoreOS (rhel-coreos)

Package List

Full list (569 packages)

Changed:

Added:

Extensions

Full list (162 packages)

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

Package List

Full list (482 packages)

Changed:

Added:

Extensions

Full list (209 packages)


Red Hat Enterprise Linux CoreOS base layer: 10.2.20260513-0

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