# Rhcos Versions

> RHCOS build variants, streams, and OCP to RHEL version mappings

- Skill: `coreos/rhcos-versions` (Agent Skill)
- Install (CLI): `npx skillmds@latest add coreos/rhcos-versions`
- Raw SKILL.md: https://api.skillmd.com/api/skills/coreos/rhcos-versions/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: coreos (https://skillmd.com/u/coreos)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/coreos/rhcos-versions

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# RHCOS Versions

Build variants, streams, and version mappings for RHEL CoreOS.

> Related: `rhcos-build-pipeline`, `rhcos-repositories`

## Build Variants

Defined in `rhel-coreos-config`:

| Variant | Description | Config File |
|---------|-------------|-------------|
| `rhel-9.8` | RHEL 9.8 based (default) | `manifest-rhel-9.8.yaml` |
| `rhel-10.2` | RHEL 10.2 based | `manifest-rhel-10.2.yaml` |
| `c9s` | CentOS Stream 9 | `manifest-c9s.yaml` |
| `c10s` | CentOS Stream 10 | `manifest-c10s.yaml` |

## Build Streams

| Stream | Description |
|--------|-------------|
| `c9s` | CentOS Stream 9 (upstream development) |
| `c10s` | CentOS Stream 10 (upstream development) |
| `rhel-9.2` | RHEL 9.2 based builds |
| `rhel-9.4` | RHEL 9.4 based builds |
| `rhel-9.6` | RHEL 9.6 based builds |
| `rhel-9.8` | RHEL 9.8 based builds |
| `rhel-10.2` | RHEL 10.2 based builds |

## OCP to RHEL Version Mapping

| OCP Version | RHEL Version |
|-------------|--------------|
| 4.12 | 8.6 |
| 4.13 | 9.2 |
| 4.14 | 9.2 |
| 4.15 | 9.2 |
| 4.16 | 9.4 |
| 4.17 | 9.4 |
| 4.18 | 9.4 |
| 4.19 | 9.6 |
| 4.20 | 9.6 |
| 4.21 | 9.6 |
| 4.22 | 9.8 |