4.21.0-0.nightly-2026-05-10-083521

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-2026-05-10-083521

Team Approvals:

Accepted
- QE

Tests:

Blocking jobs
- aws-ovn-serial-1of2 Succeeded (1 retry) periodic-ci-openshift-release-main-nightly-4.21-e2e-aws-ovn-serial-1of2
  - Attempt 1 Failed
  - Attempt 2 Succeeded
- aws-ovn-serial-2of2 Succeeded periodic-ci-openshift-release-main-nightly-4.21-e2e-aws-ovn-serial-2of2
- aws-ovn-single-node-upgrade-4.21-micro Succeeded periodic-ci-openshift-release-main-ci-4.21-e2e-aws-upgrade-ovn-single-node
- 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 periodic-ci-openshift-release-main-nightly-4.21-fips-payload-scan
- 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 (1 retry) periodic-ci-openshift-hypershift-release-4.21-periodics-e2e-aws-ovn-conformance
  - Attempt 1 Failed
  - Attempt 2 Succeeded
- 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 periodic-ci-openshift-release-main-nightly-4.21-e2e-metal-ipi-ovn-ipv6
- microshift-ovn-conformance-parallel Succeeded periodic-ci-openshift-microshift-release-4.21-periodics-e2e-aws-ovn-ocp-conformance
- 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 Failed 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 Succeeded 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 Succeeded 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 Succeeded 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 Failed 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 Succeeded 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 Failed 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 Failed 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 Succeeded periodic-ci-openshift-eng-ocp-qe-perfscale-ci-main-aws-4.21-nightly-x86-payload-control-plane-6nodes
- rosa-classic-sts-conformance Failed (1 retry) periodic-ci-openshift-release-main-nightly-4.21-e2e-rosa-sts-ovn
  - Attempt 1 Failed
  - Attempt 2 Failed
- telcov10n-metal-single-node-spoke Failed 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 Succeeded 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 Succeeded 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
Async jobs
- claude-payload-agent Succeeded periodic-ci-openshift-release-main-claude-payload-agent-no-slack

Upgrades from:

4.21.0-0.nightly-2026-05-06-025300 - S S S S S S S S S S
4.20.0-0.nightly-2026-05-09-111343 (changes) - S S F S S S S

Upgrades to:

4.21.0-0.nightly-2026-05-10-152311 (changes) - S F S S S F S S S S S

Loading changelog, this may take a while ...

Changes from 4.21.0-0.nightly-2026-05-06-025300

Created: 2026-05-10 08:36:59 +0000 UTC

Image Digest: sha256:e753d3d4d03478ca271d3719f1b537885dc64bf637fad11879f96445ab619f9d

Components

Kubectl 1.34.1
Kubernetes 1.34.7
Kubernetes Tests 1.34.1
Red Hat Enterprise Linux CoreOS 10.2.20260423-0

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

cluster-node-tuning-operator git 9782f0fb sha256:72f68893d806e63a06bd597bcc9373dbda6382357a2f2e9882448c5d30939516
ironic git 6e93d7a0 sha256:751235eb612082f479adec20ab13b7b97738355f8af230e2d41fca0e741267c8
ironic-agent git ff276c00 sha256:af333a0b4b6a3f48cac9f5469a4f15afb2a1aba3043313e99ca12b8062fc6f84
ironic-machine-os-downloader git 707c2262 sha256:546a508ef07ab730efcab4f5fad72f1d2feeca8f6774292a0ae218c851b14085
machine-os-images git 9a8e96a6 sha256:07a3d3e4f77d952f5c51e508d5cb7c6971d23c700118749ed127109a6242d0b6
monitoring-plugin git 908df025 sha256:83afa90fb9788830375d74c2c94f654a1a5c983bc07818f8284d1e32eb58692a
network-tools git d6717e45 sha256:2ec469bebe6c9dff060fc2a224d97e1d8dabd1e867d9ac6404cb7e2ac36e5cb9
networking-console-plugin git 268037d7 sha256:45f18cabc529675844f86870f6138fab2c4560e29274a905075edac1f01a5416
rhel-coreos git 10f1a2e7 sha256:e1307da3440af7f53748ac5b5a7e8fdee44f9592c515b8889717ba92e6015001
rhel-coreos-extensions git 10f1a2e7 sha256:d9159710cd30d3ebfa5ecd8d920aee2bc925fcded4f3768ea56f84d14edfd5c9
tools git 9d9df34c sha256:bed0daa8a1c11e16a675497e60d0d1db0b5f98b400fccec866a76745938427a2

agent-installer-ui

OCPBUGS-85261: [release-4.21] OCPBUGS-84147 | [Below the sea UI] Leaky Abstraction: Transient 500 errors exposed during host binding process (#3684) #3684
Remove 2 node arbiter option from the control plane dropdown option (#3680) #3680
OCPBUGS-84608, OCPBUGS-84830, OCPBUGS-84993, OCPBUGS-85009, OCPBUGS-85039: Bump axios to ^1.15.1 (#3690) #3690
Full changelog

aws-kms-encryption-provider

OCPBUGS-80711: Bump google.golang.org/grpc to v1.79.3 #40
Full changelog

azure-disk-csi-driver

OCPBUGS-85285: check for node name in waitForDiskManagedByTobeRemoved #147
Full changelog

baremetal-installer, installer, installer-artifacts

OCPBUGS-84225: ibmcloud: bump vpc-go-sdk and capibm #10514
Full changelog

cluster-olm-operator

OCPBUGS-80769: Bump google.golang.org/grpc to v1.79.3 #197
Full changelog

console

OCPBUGS-85040: Remove PII from events #16401
Full changelog

csi-driver-nfs

OCPBUGS-80783: CVE-2026-33186: bump google.golang.org/grpc v1.79.3 #176
Full changelog

gcp-machine-controllers

OCPBUGS-80828: Bump gRPC-Go package for CVE fix #154
Full changelog

kube-metrics-server

OCPBUGS-80716: Bump google.golang.org/grpc to v1.79.3 #61
Full changelog

machine-config-operator

OCPBUGS-85286: Fix Admin Ack message for azure/vsphere clusters upgrading to 4.22 #6017
OCPBUGS-85126: Fix units rollback if update failure #6008
OCPBUGS-84941: Fix ssh and password rollbacks #5987
OCPBUGS-84970: Fix encapsulated IGN version #5996
Full changelog

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

OCPBUGS-80847, OCPBUGS-80848, OCPBUGS-80849: Bump google.golang.org/grpc to v1.79.3 for CVE-2026-33186[Release-4.21] #1289
Full changelog

tests

OCPBUGS-84655: fix openshift/network/third-party suite selecting zero tests #31091
OCPBUGS-84978: Skip image-registry operator tests for Libvirt platform in upgrade jobs. #31123
OCPBUGS-84947: test: add monitortest to detect pods stuck in Pending state #31117
OCPBUGS-84947: Add [Late] test to collect CRI-O goroutine dumps via SIGUSR1 #31118
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