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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-nightly-2026-04-08-134107

Team Approvals:

Tests:

• Blocking jobs
  • aws Succeeded periodic-ci-openshift-release-main-okd-scos-4.21-e2e-aws-ovn
• Informing jobs
  • agent-single-node-ipv6 Failed periodic-ci-openshift-release-main-okd-scos-4.21-e2e-agent-single-node-ipv6
  • aws-ovn-techpreview Pending (1 retry) periodic-ci-openshift-release-main-okd-scos-4.21-e2e-aws-ovn-techpreview

    • Attempt 1 Failed
    • Attempt 2 Pending
  • aws-upgrade Succeeded periodic-ci-openshift-release-main-okd-scos-4.21-e2e-aws-ovn-upgrade
  • aws-upgrade-minor Succeeded periodic-ci-openshift-release-main-okd-scos-4.21-upgrade-from-okd-scos-4.20-e2e-aws-ovn-upgrade
  • gcp Failed periodic-ci-openshift-release-main-okd-scos-4.21-e2e-gcp
  • vsphere Succeeded periodic-ci-openshift-release-main-okd-scos-4.21-e2e-vsphere-ovn

Upgrades from:

• 4.21.0-0.okd-scos-nightly-2026-04-08-014107 - Success
• 4.20.0-0.okd-scos-2026-02-07-001639 (changes) - Success

---

Loading changelog, this may take a while ...

Changes from 4.21.0-0.okd-scos-nightly-2026-04-08-014107

Created: 2026-04-08 13:43:03 +0000 UTC

Image Digest: sha256:f6e968bfd9b36fe2a57e51769e3d9c20a5981a314824cdf2dab485ff07b12373

Components

• Kubectl 1.34.1
• Kubernetes 1.34.6
• Kubernetes Tests 1.34.1
• CentOS Stream CoreOS 10 10.0.20260317-0

Rebuilt images without code change

• machine-os-images git 9a8e96a6 sha256:307a826ec5ccb255c003a1766dbb66e03baa88afafa8b49e13c3567b02e40aec

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

• OCPBUGS-81642: fix: allow workers to join TNA cluster when 1 master + arbiter are ready #2066
• Full changelog

agent-installer-ui

• OCPBUGS-81587: upgrade lodash and lodash-es to 4.17.23 to address CVE-2025-13465 (#3535) #3535
• Full changelog

insights-runtime-exporter, insights-runtime-extractor

• Updating ose-insights-runtime-exporter-container image to be consistent with ART for 4.21 #77
• Full changelog

---

View changelog in Markdown or change previous release: 4.21.0-0.okd-scos-nightly-2026-04-08-0141074.21.0-0.okd-scos-nightly-2026-04-03-1259194.21.0-0.okd-scos-nightly-2026-04-02-0141484.21.0-0.okd-scos-nightly-2026-04-01-1341484.21.0-0.okd-scos-nightly-2026-04-01-011820───5.0.0-0.okd-scos-nightly-2026-04-08-1006455.0.0-0.okd-scos-nightly-2026-04-07-2206455.0.0-0.okd-scos-nightly-2026-04-07-1006455.0.0-0.okd-scos-nightly-2026-04-03-0817135.0.0-0.okd-scos-nightly-2026-04-02-1034235.0.0-0.okd-scos-nightly-2026-04-01-223423───5.0.0-0.okd-scos-2026-02-24-143251───4.23.0-0.okd-scos-nightly-2026-03-09-153314───4.23.0-0.okd-scos-2026-03-09-153314───4.22.0-0.okd-scos-nightly-2026-04-08-1055574.22.0-0.okd-scos-nightly-2026-04-07-2255574.22.0-0.okd-scos-nightly-2026-04-07-1007114.22.0-0.okd-scos-nightly-2026-04-03-1443324.22.0-0.okd-scos-nightly-2026-04-02-1848594.22.0-0.okd-scos-nightly-2026-04-02-0648594.22.0-0.okd-scos-nightly-2026-04-01-1735154.22.0-0.okd-scos-nightly-2026-03-13-0922554.22.0-0.okd-scos-nightly-2026-03-12-2122554.22.0-0.okd-scos-nightly-2026-03-12-092255───4.22.0-0.okd-scos-2026-04-08-1336464.22.0-0.okd-scos-2026-04-08-0136464.22.0-0.okd-scos-2026-04-07-1336464.22.0-0.okd-scos-2026-04-07-0136464.22.0-0.okd-scos-2026-04-06-1336464.22.0-0.okd-scos-2026-04-05-2139254.22.0-0.okd-scos-2026-04-05-093924───4.21.0-0.okd-scos-2026-04-08-1328194.21.0-0.okd-scos-2026-04-08-0128194.21.0-0.okd-scos-2026-04-07-1328194.21.0-0.okd-scos-2026-04-07-0128194.21.0-0.okd-scos-2026-04-06-1328194.21.0-0.okd-scos-2026-04-06-012819───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───4.22.0-okd-scos.ec.104.22.0-okd-scos.ec.94.22.0-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───4.21.0-okd-scos.104.21.0-okd-scos.94.21.0-okd-scos.84.21.0-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───4.15.0-0.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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