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4.18.21

Download the installer for your operating system or run

oc adm release extract --tools quay.io/openshift-release-dev/ocp-release:4.18.21-aarch64
Team Approvals:

Tests:

Upgrades from:

Untested upgrades: 4.17.11, 4.17.12, 4.17.13, 4.17.14, 4.17.15, 4.17.16, 4.17.17, 4.17.18, 4.17.19, 4.17.20, 4.17.21, 4.17.22, 4.17.23, 4.17.24, 4.17.25, 4.17.26, 4.17.27, 4.17.28, 4.17.29, 4.17.30, 4.17.31, 4.17.32, 4.17.33, 4.17.34, 4.17.35, 4.17.36, 4.18.1, 4.18.10, 4.18.11, 4.18.12, 4.18.13, 4.18.14, 4.18.15, 4.18.16, 4.18.17, 4.18.18, 4.18.19, 4.18.2, 4.18.3, 4.18.4, 4.18.5, 4.18.6, 4.18.7, 4.18.8, 4.18.9

Upgrades to:


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Changes from 4.18.20

Created: 2025-07-24 11:08:33 +0000 UTC

Image Digest: sha256:fb5ab479f13197b2c8339621bc56d96d20c0bf4edf5a1f91b539031f0c9965ae

Components

FeatureGate Changes

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

Rebuilt images without code change

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

aws-cluster-api-controllers

azure-machine-controllers

baremetal-runtimecfg

cluster-autoscaler

cluster-config-api

console

monitoring-plugin

oauth-proxy

oauth-server

oc-mirror

openshift-apiserver

openshift-controller-manager

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

ovn-kubernetes, ovn-kubernetes-microshift

tests


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