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Download installer and client with:

oc adm release extract --tools registry.ci.openshift.org/origin/release-scos:4.21.0-0.okd-scos-2026-02-27-160234

Team Approvals:

Tests:

• Blocking jobs
  • aws Failed (2 retries) periodic-ci-openshift-release-main-okd-scos-4.21-e2e-aws-ovn
• Informing jobs
  • aws-upgrade Failed (2 retries) periodic-ci-openshift-release-main-okd-scos-4.21-e2e-aws-ovn-upgrade
  • aws-upgrade-minor Failed periodic-ci-openshift-release-main-okd-scos-4.21-upgrade-from-okd-scos-4.20-e2e-aws-ovn-upgrade

Upgrades from:

• 4.21.0-0.okd-scos-2026-02-19-115938 - F F F
• 4.20.0-0.okd-scos-2026-02-07-001639 (changes) - Failed

---

Loading changelog, this may take a while ...

Changes from 4.21.0-0.okd-scos-2026-02-19-115938

Created: 2026-02-27 16:02:43 +0000 UTC

Image Digest: sha256:813ce61b0e8d6ca3c0221f274f8228c84de4ea5ca514923c07340591a0ed96b7

Components

• Kubectl 1.34.1
• Kubernetes upgraded from 1.34.2 to 1.34.4
• Kubernetes Tests 1.34.1
• CentOS Stream CoreOS 10 10.0.20260211-0

agent-installer-utils

• OCPBUGS-77302: Remove multiple redhat-operator-index catalogs #262
• OCPBUGS-77236: Update quay.io/konflux-ci/konflux-vanguard/task-rpms-signature-scan:0.2 Docker digest to 2f3015a #222
• OCPBUGS-77220: Update Konflux references #251
• Full changelog

baremetal-runtimecfg

• OCPBUGS-77168: Install dbus-tools, needed in pkg/monitor/dnsmasqmonitor.go #383
• Full changelog

cli, cli-artifacts, deployer, tools

• OCPBUGS-77168: Install subscription-manager in required images #2208
• Full changelog

cluster-baremetal-operator

• OCPBUGS-77035: Update kubebuilder tools to more latest version #558
• Full changelog

cluster-monitoring-operator

• OCPBUGS-77271: AlertingRule: fix duplicate PrometheusRules after MD5->SHA-224 naming change #2829
• Full changelog

console

• CONSOLE-5011: migrate to yarn berry #16059
• Full changelog

gcp-pd-csi-driver-operator

• OCPBUGS-77310: Add RBAC permission for node driver to get Node objects #171
• Full changelog

hyperkube, installer-kube-apiserver-artifacts, kube-proxy, pod

• OCPBUGS-76516: Bump v1.34.4 #2590
• Full changelog

hypershift

• OCPBUGS-75930: [release-4.21] fix(cpo): Correct route labeling logic for HCP router infrastructure #7641
• OCPBUGS-75884: feat(updates): enable CVO metrics access with RHOBS monitoring flag #7632
• fix: OCPBUGS-74104: Fix CVE-2025-58183 #7545
• Full changelog

ibm-vpc-block-csi-driver

• OCPBUGS-77203: [release-4.21] standardize build paths #121
• Full changelog

ironic

• OCPBUGS-76934: Bump keystonemiddleware version to 10.9.0-0.20260216145500.557d173 for CVE-2026-22797 fix #791
• Full changelog

machine-config-operator

• OCPBUGS-77354: Clean up vsphere login error logging #5705
• OCPBUGS-76555: Remove MCD liveness probe #5651
• OCPBUGS-77072: mcd_config_drift not working properly #5675
• Full changelog

networking-console-plugin

• OCPBUGS-77225: Fix NAD creation using default namespace instead of selected one #349
• Full changelog

oc-mirror

• OCPBUGS-77222: Fix registriesd “unknown userid” failure for arbitrary UIDs #1358
• Full changelog

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

• OCPBUGS-77067: Remove the collect-profiles info from the microshift kustomization file #1234
• Full changelog

prometheus-config-reloader, prometheus-operator, prometheus-operator-admission-webhook

• OCPBUGS-74477: Validate webhookURL secret for MSTeams receiver in AlertmanagerConfig CRD #359
• Full changelog

tests

• OCPBUGS-77097: Add test for CPMS OnDelete strategy with full master replacement #30802
• : OCPBUGS-76856:cert tests: mark TLS registry test as informing #30779
• OCPBUGS-76529: Fix flakiness in MutableCSINodeAllocatableCount test #30772
• Full changelog

vsphere-csi-driver-operator

• OCPBUGS-74701: Fix update of stable-generation annotation #330
• Full changelog

---

View changelog in Markdown or change previous release: 4.21.0-0.okd-scos-2026-02-27-0352164.21.0-0.okd-scos-2026-02-26-1552164.21.0-0.okd-scos-2026-02-26-0352164.21.0-0.okd-scos-2026-02-25-1456264.21.0-0.okd-scos-2026-02-19-1159384.21.0-0.okd-scos-2026-02-18-0732504.21.0-0.okd-scos-2026-02-17-1932504.21.0-0.okd-scos-2026-02-17-0732504.21.0-0.okd-scos-2026-02-16-193250───5.0.0-0.okd-scos-nightly-2026-02-28-0153065.0.0-0.okd-scos-nightly-2026-02-27-1353065.0.0-0.okd-scos-nightly-2026-02-27-0153065.0.0-0.okd-scos-nightly-2026-02-26-1353065.0.0-0.okd-scos-nightly-2026-02-25-1432525.0.0-0.okd-scos-nightly-2026-02-25-023252───5.0.0-0.okd-scos-2026-02-24-143251───4.22.0-0.okd-scos-nightly-2026-02-28-0731264.22.0-0.okd-scos-nightly-2026-02-27-1813294.22.0-0.okd-scos-nightly-2026-02-27-0613284.22.0-0.okd-scos-nightly-2026-02-26-1813274.22.0-0.okd-scos-nightly-2026-02-26-0613274.22.0-0.okd-scos-nightly-2026-02-25-181326───4.22.0-0.okd-scos-2026-02-27-2112414.22.0-0.okd-scos-2026-02-27-0912414.22.0-0.okd-scos-2026-02-26-2112414.22.0-0.okd-scos-2026-02-26-0912414.22.0-0.okd-scos-2026-02-25-2112414.22.0-0.okd-scos-2026-02-25-084534───4.21.0-0.okd-scos-nightly-2026-02-27-2125574.21.0-0.okd-scos-nightly-2026-02-27-0925574.21.0-0.okd-scos-nightly-2026-02-26-2119444.21.0-0.okd-scos-nightly-2026-02-26-0854064.21.0-0.okd-scos-nightly-2026-02-25-2039134.21.0-0.okd-scos-nightly-2026-02-18-0511374.21.0-0.okd-scos-nightly-2026-02-17-1711374.21.0-0.okd-scos-nightly-2026-02-11-2258444.21.0-0.okd-scos-nightly-2026-02-11-1058444.21.0-0.okd-scos-nightly-2026-02-10-225844───4.20.0-0.okd-scos-2026-02-10-1309514.20.0-0.okd-scos-2026-02-07-0016394.20.0-0.okd-scos-2026-02-06-1216394.20.0-0.okd-scos-2026-02-06-0016394.20.0-0.okd-scos-2026-02-05-1216384.20.0-0.okd-scos-2026-02-05-0016374.20.0-0.okd-scos-2026-02-04-121636───4.19.0-0.okd-scos-2025-10-25-0018304.19.0-0.okd-scos-2025-10-24-1218294.19.0-0.okd-scos-2025-10-24-0018284.19.0-0.okd-scos-2025-10-23-1218284.19.0-0.okd-scos-2025-10-23-001828───4.18.0-0.okd-scos-2025-05-27-0825374.18.0-0.okd-scos-2025-05-26-2025374.18.0-0.okd-scos-2025-05-26-0825374.18.0-0.okd-scos-2025-05-23-0333574.18.0-0.okd-scos-2025-05-22-153357───4.17.0-0.okd-scos-2025-02-25-0904554.17.0-0.okd-scos-2025-02-24-2104554.17.0-0.okd-scos-2025-02-24-0904544.17.0-0.okd-scos-2025-02-23-2104544.17.0-0.okd-scos-2025-02-22-211215───4.16.0-0.okd-scos-2025-01-06-1432414.16.0-0.okd-scos-2025-01-04-1456004.16.0-0.okd-scos-2025-01-04-0142364.16.0-0.okd-scos-2025-01-03-1342364.16.0-0.okd-scos-2025-01-03-0142364.16.0-0.okd-scos-2024-12-17-0222464.16.0-0.okd-scos-2024-11-24-1100454.16.0-0.okd-scos-2024-11-23-1818454.16.0-0.okd-scos-2024-11-23-0618454.16.0-0.okd-scos-2024-11-22-1818454.16.0-0.okd-scos-2024-11-22-061845───4.15.0-0.okd-scos-2024-12-16-1913164.15.0-0.okd-scos-2024-01-18-1035224.15.0-0.okd-scos-2024-01-17-2235214.15.0-0.okd-scos-2024-01-17-1035204.15.0-0.okd-scos-2024-01-16-223519───4.15.0-0.okd-2025-06-27-1341344.15.0-0.okd-2025-06-17-1652194.15.0-0.okd-2025-05-02-1402244.15.0-0.okd-2025-04-03-2126204.15.0-0.okd-2025-04-02-1800124.15.0-0.okd-2024-03-27-1109014.15.0-0.okd-2024-03-26-2309014.15.0-0.okd-2024-03-23-1640104.15.0-0.okd-2024-03-23-0440104.15.0-0.okd-2024-03-22-164010───4.21.0-okd-scos.74.21.0-okd-scos.64.21.0-okd-scos.54.21.0-okd-scos.44.21.0-okd-scos.34.21.0-okd-scos.24.21.0-okd-scos.14.21.0-okd-scos.04.20.0-okd-scos.174.20.0-okd-scos.164.20.0-okd-scos.154.20.0-okd-scos.144.20.0-okd-scos.134.20.0-okd-scos.124.20.0-okd-scos.114.20.0-okd-scos.104.20.0-okd-scos.94.20.0-okd-scos.84.20.0-okd-scos.74.20.0-okd-scos.64.20.0-okd-scos.54.20.0-okd-scos.44.20.0-okd-scos.34.20.0-okd-scos.24.20.0-okd-scos.14.20.0-okd-scos.04.19.0-okd-scos.194.19.0-okd-scos.184.19.0-okd-scos.174.19.0-okd-scos.164.19.0-okd-scos.154.19.0-okd-scos.144.19.0-okd-scos.134.19.0-okd-scos.124.19.0-okd-scos.114.19.0-okd-scos.104.19.0-okd-scos.94.19.0-okd-scos.84.19.0-okd-scos.74.19.0-okd-scos.64.19.0-okd-scos.54.19.0-okd-scos.44.19.0-okd-scos.34.19.0-okd-scos.24.19.0-okd-scos.14.19.0-okd-scos.04.18.0-okd-scos.104.18.0-okd-scos.94.18.0-okd-scos.84.18.0-okd-scos.74.18.0-okd-scos.64.18.0-okd-scos.54.18.0-okd-scos.44.18.0-okd-scos.34.18.0-okd-scos.24.18.0-okd-scos.14.18.0-okd-scos.04.17.0-okd-scos.34.17.0-okd-scos.24.17.0-okd-scos.14.17.0-okd-scos.04.16.0-okd-scos.14.16.0-okd-scos.04.16.0-0.okd-scos-2024-09-24-1517474.16.0-0.okd-scos-2024-08-21-1556134.15.0-0.okd-scos-2024-01-18-223523───4.22.0-okd-scos.ec.84.22.0-okd-scos.ec.74.22.0-okd-scos.ec.64.22.0-okd-scos.ec.54.22.0-okd-scos.ec.44.22.0-okd-scos.ec.34.22.0-okd-scos.ec.24.22.0-okd-scos.ec.14.22.0-okd-scos.ec.04.21.0-okd-scos.ec.194.21.0-okd-scos.ec.184.21.0-okd-scos.ec.174.21.0-okd-scos.ec.164.21.0-okd-scos.ec.154.21.0-okd-scos.ec.144.21.0-okd-scos.ec.134.21.0-okd-scos.ec.124.21.0-okd-scos.ec.114.21.0-okd-scos.ec.104.21.0-okd-scos.ec.94.21.0-okd-scos.ec.84.21.0-okd-scos.ec.74.21.0-okd-scos.ec.64.21.0-okd-scos.ec.54.21.0-okd-scos.ec.44.21.0-okd-scos.ec.34.21.0-okd-scos.ec.24.21.0-okd-scos.ec.14.21.0-okd-scos.ec.0───4.15.0-0.okd-2024-03-10-0101164.15.0-0.okd-2024-02-23-1634104.15.0-0.okd-2024-02-10-0355344.15.0-0.okd-2024-01-27-070424

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