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4.21.0-0.nightly-2026-08-24-221323

Manual Override Applied

This release was manually Accepted.


Reason: MicroShift pcp install failure blocking conformance tests — known CI environment issue (similar pattern tracked in OCPBUGS-99914 for 5.0), not caused by payload code changes. Only 3 low-risk PRs since last accepted (CVE bumps, ovn-kubernetes bug fix OCPBUGS-112513). All 5/5 upgrade tests passed. — https://redhat-internal.slack.com/archives/C0AMHBXQW9F/p1787643476308889

Download the installer for your operating system or run

oc adm release extract --tools registry.ci.openshift.org/ocp/release:4.21.0-0.nightly-2026-08-24-221323

Qualifiers (status api): None

Tests:

Upgrades from:


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Changes from 4.21.0-0.nightly-2026-08-20-003713

Created: 2026-08-24 22:16:24 +0000 UTC

Image Digest: sha256:87aafa4f15bfcf93a8048c5f08f0062d5a740291fe54edba6397710fa9c7bec9

Components

Rebuilt images without code change

agent-installer-ui

aws-karpenter-provider-aws

baremetal-installer, installer, installer-artifacts

console

csi-external-provisioner

ironic

ironic-agent

monitoring-plugin

networking-console-plugin

ovn-kubernetes, ovn-kubernetes-microshift

prometheus


Node Image Info

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Red Hat Enterprise Linux CoreOS (rhel-coreos)

Package List

Full list (565 packages)

Changed:

Removed:

Extensions

Full list (162 packages)

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

Package List

Full list (489 packages)

Extensions

Full list (207 packages)


Red Hat Enterprise Linux CoreOS base layer: 10.2.20260521-0

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