Red Hat OpenShift 4.21 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Supported
Red Hat OpenShift 4.21 is actively supported. It reaches end of life on 3 Aug 2027.
359 days of security support left
4.21.25 latest release
45% of this branch's supported lifetime has elapsed — 21 Oct 2025 → 3 Aug 2027.
Check your versionoc version
Support timeline
Official dates from the Red Hat OpenShift release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 21 Oct 2025 | — |
| End of life (scheduled) | 3 Aug 2027 | in 359 days |
| Active support ended | 9 Sept 2026 | security fixes only after this |
| Latest release | 4.21.25 · 21 Jul 2026 | current |
How much runway a newer branch buys
Moving to Red Hat OpenShift 4.22 extends security support by about 150 days.
| Branch | End of life | Days left | vs 4.21 |
|---|---|---|---|
| Red Hat OpenShift 4.22 | 31 Dec 2027 | 509 | +150 days |
| Red Hat OpenShift 4.21 | 3 Aug 2027 | 359 | this branch |
| Red Hat OpenShift 4.20 | 21 Apr 2027 | 255 | -104 days |
| Red Hat OpenShift 4.19 | 17 Dec 2026 | 130 | -229 days |
| Red Hat OpenShift 4.18 | 25 Aug 2026 | 16 | -343 days |
Frequently asked questions
When does Red Hat OpenShift 4.21 reach end of life?
Red Hat OpenShift 4.21 reaches end of life on 3 Aug 2027 — 359 days from now. After that date it receives no security fixes.
Is Red Hat OpenShift 4.21 still supported?
Yes. Red Hat OpenShift 4.21 is currently maintained. Latest release: 4.21.25, published 21 Jul 2026.
What happens when Red Hat OpenShift 4.21 reaches end of life?
Security fixes stop. After 3 Aug 2027 this branch receives no further updates under standard support.
How long do I have to upgrade from Red Hat OpenShift 4.21?
359 days. Moving to Red Hat OpenShift 4.22 instead buys roughly 150 more days of security support.
All Red Hat OpenShift versions
4.22 supported 4.21 supported 4.20 supported 4.19 supported 4.18 supported 4.17 EOL 2026 4.16 EOL 2025 4.15 EOL 2025 4.14 EOL 2025 4.13 EOL 2024 4.12 EOL 2024 4.11 EOL 2024 4.10 EOL 2023 4.9 EOL 2023 4.8 EOL 2023 4.7 EOL 2022 4.6 EOL 2022 4.5 EOL 2021 4.4 EOL 2021 4.3 EOL 2020 4.2 EOL 2020 4.1 EOL 2020