4.21.0-0.nightly-2026-04-21-005726

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-2026-04-21-005726

Team Approvals:

Accepted
- QE

Tests:

Blocking jobs
- aws-ovn-serial-1of2 Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-aws-ovn-serial-1of2
- aws-ovn-serial-2of2 Succeeded (1 retry) periodic-ci-openshift-release-main-nightly-4.21-e2e-aws-ovn-serial-2of2
  - Attempt 1 Failed
  - Attempt 2 Succeeded
- aws-ovn-single-node-upgrade-4.21-micro Succeeded (1 retry) periodic-ci-openshift-release-main-ci-4.21-e2e-aws-upgrade-ovn-single-node
  - Attempt 1 Failed
  - Attempt 2 Succeeded
- aws-ovn-upgrade-4.21-micro-fips Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-aws-ovn-upgrade-fips
- aws-ovn-upgrade-4.21-micro-fips-no-nat-instance Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-aws-ovn-upgrade-fips-no-nat-instance
- azure-ovn-upgrade-4.21-micro Succeeded periodic-ci-openshift-release-main-ci-4.21-e2e-azure-ovn-upgrade
- driver-toolkit Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-aws-driver-toolkit
- fips-scan Succeeded (1 retry) periodic-ci-openshift-release-main-nightly-4.21-fips-payload-scan
  - Attempt 1 Failed
  - Attempt 2 Succeeded
- gcp-ovn-rt-upgrade-4.21-minor Succeeded periodic-ci-openshift-release-main-ci-4.21-upgrade-from-stable-4.20-e2e-gcp-ovn-rt-upgrade
- hypershift-ovn-conformance-4.21 Succeeded periodic-ci-openshift-hypershift-release-4.21-periodics-e2e-aws-ovn-conformance
- install-analysis-all Succeeded periodic-ci-openshift-release-main-nightly-4.21-install-analysis-all
- metal-ipi-ovn-bm Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-metal-ipi-ovn-bm
- metal-ipi-ovn-ipv6 Succeeded (1 retry) periodic-ci-openshift-release-main-nightly-4.21-e2e-metal-ipi-ovn-ipv6
  - Attempt 1 Failed
  - Attempt 2 Succeeded
- microshift-ovn-conformance-parallel Succeeded (1 retry) periodic-ci-openshift-microshift-release-4.21-periodics-e2e-aws-ovn-ocp-conformance
  - Attempt 1 Failed
  - Attempt 2 Succeeded
- microshift-ovn-conformance-serial Succeeded periodic-ci-openshift-microshift-release-4.21-periodics-e2e-aws-ovn-ocp-conformance-serial
- overall-analysis-all Succeeded (1 retry) periodic-ci-openshift-release-main-nightly-4.21-overall-analysis-all
  - Attempt 1 Failed
  - Attempt 2 Succeeded
Informing jobs
- aws-console Failed periodic-ci-openshift-release-main-nightly-4.21-console-aws
- aws-control-plane-machine-set-operator Succeeded periodic-ci-openshift-cluster-control-plane-machine-set-operator-release-4.21-periodics-e2e-aws
- aws-csi Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-aws-csi
- aws-ovn Succeeded periodic-ci-openshift-release-main-ci-4.21-e2e-aws-ovn
- aws-ovn-cgroupsv2 Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-aws-ovn-cgroupsv2
- aws-ovn-fips Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-aws-ovn-fips
- aws-ovn-single-node Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-aws-ovn-single-node
- aws-ovn-single-node-csi Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-aws-ovn-single-node-csi
- aws-ovn-single-node-serial Failed periodic-ci-openshift-release-main-nightly-4.21-e2e-aws-ovn-single-node-serial
- aws-ovn-single-node-upgrade-minor Failed periodic-ci-openshift-release-main-nightly-4.21-upgrade-from-stable-4.20-e2e-aws-upgrade-ovn-single-node
- aws-ovn-upgrade-out-of-change Succeeded periodic-ci-openshift-release-main-ci-4.21-e2e-aws-ovn-upgrade-out-of-change
- aws-upi Failed periodic-ci-openshift-release-main-nightly-4.21-e2e-aws-ovn-upi
- azure-control-plane-machine-set-operator Succeeded periodic-ci-openshift-cluster-control-plane-machine-set-operator-release-4.21-periodics-e2e-azure
- azure-csi Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-azure-csi
- azure-ovn Failed periodic-ci-openshift-release-main-ci-4.21-e2e-azure-ovn
- azure-ovn-serial Succeeded periodic-ci-openshift-release-main-ci-4.21-e2e-azure-ovn-serial
- azure-ovn-upgrade-out-of-change Succeeded periodic-ci-openshift-release-main-ci-4.21-e2e-azure-ovn-upgrade-out-of-change
- cnv Succeeded periodic-ci-openshift-release-main-cnv-nightly-4.21-deploy-azure-kubevirt-ovn
- gcp-control-plane-machine-set-operator Failed periodic-ci-openshift-cluster-control-plane-machine-set-operator-release-4.21-periodics-e2e-gcp
- gcp-ovn Failed periodic-ci-openshift-release-main-ci-4.21-e2e-gcp-ovn
- gcp-ovn-csi Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-gcp-ovn-csi
- gcp-ovn-rt Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-gcp-ovn-rt
- gcp-ovn-serial Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-gcp-ovn-serial
- gcp-ovn-upgrade-4.21-minor Failed periodic-ci-openshift-release-main-ci-4.21-upgrade-from-stable-4.20-e2e-gcp-ovn-upgrade
- gcp-ovn-upgrade-micro Failed periodic-ci-openshift-release-main-ci-4.21-e2e-gcp-ovn-upgrade
- hypershift-aks-conformance-4.21 Succeeded periodic-ci-openshift-hypershift-release-4.21-periodics-e2e-azure-aks-ovn-conformance
- hypershift-kubevirt-ovn-conformance-4.21 Failed periodic-ci-openshift-hypershift-release-4.21-periodics-e2e-azure-kubevirt-ovn
- metal-ipi-ovn-dualstack Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-metal-ipi-ovn-dualstack
- metal-ipi-ovn-serial Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-metal-ipi-ovn-serial-ipv4
- metal-ipi-ovn-serial-virtualmedia-1of2 Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-metal-ipi-ovn-serial-virtualmedia-1of2
- metal-ipi-ovn-serial-virtualmedia-2of2 Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-metal-ipi-ovn-serial-virtualmedia-2of2
- metal-ipi-ovn-upgrade Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-metal-ipi-ovn-upgrade
- metal-ipi-ovn-upgrade-minor Succeeded periodic-ci-openshift-release-main-nightly-4.21-upgrade-from-stable-4.20-e2e-metal-ipi-ovn-upgrade
- metal-ipi-serial-ipv6 Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-metal-ipi-serial-ovn-ipv6
- metal-ipi-serial-ovn-dualstack Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-metal-ipi-serial-ovn-dualstack
- metal-ipi-upgrade-ovn-ipv6 Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-metal-ipi-upgrade-ovn-ipv6
- metal-ipi-upgrade-ovn-ipv6-minor Succeeded periodic-ci-openshift-release-main-nightly-4.21-upgrade-from-stable-4.20-e2e-metal-ipi-upgrade-ovn-ipv6
- metal-ovn-single-node-recert-cluster-rename Succeeded periodic-ci-openshift-release-main-nightly-4.21-metal-ovn-single-node-recert-cluster-rename
- openshift-dedicated-gcp-conformance Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-osd-ccs-gcp
- ovn-proxy Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-aws-ovn-proxy
- ovn-single-node-live-iso Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-metal-ovn-single-node-live-iso
- qe-perfscale Failed periodic-ci-openshift-eng-ocp-qe-perfscale-ci-main-aws-4.21-nightly-x86-payload-control-plane-6nodes
- rosa-classic-sts-conformance Succeeded (1 retry) periodic-ci-openshift-release-main-nightly-4.21-e2e-rosa-sts-ovn
  - Attempt 1 Failed
  - Attempt 2 Succeeded
- telcov10n-metal-single-node-spoke Succeeded periodic-ci-openshift-kni-eco-ci-cd-main-nightly-4.21-telcov10n-metal-single-node-spoke
- telcov10n-metal-single-node-spoke-kpis Failed periodic-ci-openshift-kni-eco-ci-cd-main-nightly-4.21-telcov10n-metal-single-node-spoke-kpis
- upgrade-analysis-all Failed (2 retries) periodic-ci-openshift-release-main-nightly-4.21-upgrade-analysis-all
- upgrade-minor-ovn Failed periodic-ci-openshift-release-main-ci-4.21-upgrade-from-stable-4.20-e2e-aws-ovn-upgrade
- vsphere-ovn Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-vsphere-ovn
- vsphere-ovn-csi Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-vsphere-ovn-csi
- vsphere-ovn-serial Failed periodic-ci-openshift-release-main-nightly-4.21-e2e-vsphere-ovn-serial
- vsphere-ovn-upgrade-micro Succeeded periodic-ci-openshift-release-main-ci-4.21-e2e-vsphere-ovn-upgrade
- vsphere-ovn-upgrade-minor Succeeded periodic-ci-openshift-release-main-ci-4.21-upgrade-from-stable-4.20-e2e-vsphere-ovn-upgrade
- vsphere-ovn-upi Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-vsphere-ovn-upi
- vsphere-ovn-upi-serial Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-vsphere-ovn-upi-serial
- vsphere-static-ovn Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-vsphere-static-ovn

Upgrades from:

4.21.0-0.nightly-2026-04-20-132728 - S F S S S F S S S S S
4.20.0-0.nightly-2026-04-20-010526 (changes) - F S F S F S S

Upgrades to:

4.22.0-0.nightly-2026-04-26-170224 (changes) - S S S S S S S
4.22.0-0.nightly-2026-04-26-104009 (changes) - S S F S S S S
4.22.0-0.nightly-2026-04-26-032920 (changes) - S S S S S S F
4.22.0-0.nightly-2026-04-25-214646 (changes) - S F F S S S S
4.22.0-0.nightly-2026-04-25-155912 (changes) - S S S S F F S
4.22.0-0.nightly-2026-04-25-090049 (changes) - F F F S F S S S S
4.22.0-0.nightly-2026-04-25-030944 (changes) - S S S S F S S
4.22.0-0.nightly-2026-04-24-210006 (changes) - S S F S F F S
4.22.0-0.nightly-2026-04-24-151454 (changes) - S S F S S F S
4.22.0-0.nightly-2026-04-24-070221 (changes) - F F F S S S F S S
4.22.0-0.nightly-2026-04-24-010109 (changes) - S S S S S S S
4.22.0-0.nightly-2026-04-23-193408 (changes) - S S S S F S S
4.22.0-0.nightly-2026-04-23-135257 (changes) - S F S S S S S
4.22.0-0.nightly-2026-04-23-080802 (changes) - S S F S F F S
4.22.0-0.nightly-2026-04-23-021021 (changes) - S F S S S S F
4.22.0-0.nightly-2026-04-22-201025 (changes) - S S F S F S S
4.22.0-0.nightly-2026-04-22-141937 (changes) - S S F S S S F
4.22.0-0.nightly-2026-04-22-080408 (changes) - S S S S S S S
4.22.0-0.nightly-2026-04-22-021901 (changes) - S S S S S F S
4.22.0-0.nightly-2026-04-21-180831 (changes) - F F F S F S F F S
4.22.0-0.nightly-2026-04-21-110601 (changes) - S F F S S S S
4.21.0-0.nightly-2026-04-26-024456 (changes) - F S S F F F F F F F F F F
4.21.0-0.nightly-2026-04-25-160204 (changes) - S F S S F F F F F F F F F F
4.21.0-0.nightly-2026-04-25-031611 (changes) - F S S F F F F F F F F F S
4.21.0-0.nightly-2026-04-24-174250 (changes) - S S F F F F F F F F F F F
4.21.0-0.nightly-2026-04-24-075922 (changes) - S S S F F F F F F F F F F
4.21.0-0.nightly-2026-04-23-212238 (changes) - F F F S F F F F F F F F F F
4.21.0-0.nightly-2026-04-23-105137 (changes) - S F S F F F F F F F F F F F
4.21.0-0.nightly-2026-04-23-010732 (changes) - S S S S S S F F F S F S
4.21.0-0.nightly-2026-04-22-131716 (changes) - S F S S F S S S S F S S S
4.21.0-0.nightly-2026-04-22-044646 (changes) - S S S S S S S F S S S
4.21.0-0.nightly-2026-04-21-212357 (changes) - F S F F S F F S S F F
4.21.0-0.nightly-2026-04-21-093615 (changes) - S F F F F S F S S S S S

Loading changelog, this may take a while ...

Changes from 4.21.0-0.nightly-2026-04-20-132728

Created: 2026-04-21 01:00:42 +0000 UTC

Image Digest: sha256:bb9e42d6124904e0d404cc8bf9fc336a532998008402631711dbb814baa3d26c

Components

Kubectl 1.34.1
Kubernetes 1.34.6
Kubernetes Tests 1.34.1
Red Hat Enterprise Linux CoreOS 10.2.20260408-0

The CoreOS links above are for the base CoreOS layer used to build the OpenShift node image and do not contain OpenShift components. This is normally only useful to devs working closely with the CoreOS team. For info about the node image, see the Node Image Info section.

Rebuilt images without code change

agent-installer-ui git 01f690a0 sha256:8f3f21ca12287eb442a01bf1e12619edf4d59da05249f8d73599852f0d848711
cluster-node-tuning-operator git 9782f0fb sha256:90fd895a1ebf7450d642bf9b6a7a3aaaf0c451f88068ec74947bc5b61b5b52c0
console git ad5e9758 sha256:70ea74409223ccac13540add54e9fc7eb988348d9ce9807a98ebd24d359c1622
ironic-agent git ff276c00 sha256:c72ea02136d3235de6960ec90052625067891820c0b8db6876941bc4b98274b8
ironic-machine-os-downloader git 707c2262 sha256:e78daa6ae0909c4677137ad5ba08adb0929b4cf29e12fb4a72b49f3e4f3afcde
machine-config-operator git 042006de sha256:f49d564bff80db8863c3980ebe2e8f7b90df1d7453bd515dc8fefe3a990cc54b
network-tools git d6717e45 sha256:e5b704fddc4a9ed871585ffdd44f9ec7690b46963c3dc7f39bb8e772bfae71ad
networking-console-plugin git 75d2add0 sha256:9f2ea95545a8233a7ea5a6ed1a2085aef07c4e43a42ff90421ccc8f8177b5a5a
rhel-coreos git 10f1a2e7 sha256:56074ae72674d1915a8ee4649433cffcc488627be2698ff26cb30fb81663ebd8
rhel-coreos-10 git 10f1a2e7 sha256:e9b38a841a83a6c4f2dc3a76ea0f21ba129284d8058c887b1c8e9245d8e27a35
rhel-coreos-10-extensions git 10f1a2e7 sha256:a60bae67c783df11ebbb50233c3770577e875e95a8810195a698f6ac95560d92
rhel-coreos-extensions git 10f1a2e7 sha256:ff5b9335839dc3864a52874d80a319414429157f810d70c8a74989e40199d4cb
tests git 34379498 sha256:ca0bcaf73f0c9557f0b39cd3478dabf42c7c2b18fffebb1b1bd79bdaef9edadc
tools git 9d9df34c sha256:2d79c8dd93b1bc8e01bd08ba4adb31632c7c080ca76295c6d26d6b94c395492b

azure-disk-csi-driver

UPSTREAM: 3569: OCPBUGS-80741: Bump grpc to v1.79.3 #137
Full changelog

cluster-config-api

OCPBUGS-83756: fix(config/v1): define constants for authentication types as typed constants #2815
Full changelog

console-operator

OCPBUGS-82037: Redeploy console pods upon cert rotation #1139
Full changelog

monitoring-plugin

OCPBUGS-83304: [release-4.21] openshift4/ose-monitoring-plugin-rhel9: Axios: Remote Code Execution via Prototype Pollution escalation #890
Full changelog

powervs-block-csi-driver

OCPBUGS-80852: Fix CVE-2026-33186 by bumping google.golang.org/grpc to 1.79.3 #127
Full changelog

Node Image Info

Loading node image info, this may take a while ...

Unable to show node image info: too many concurrent oc adm release info --rpmdb/--rpmdb-diff operations (limit 16)

View changelog in Markdown or change previous release:

Source code for this page located on github