How do I install the Rhcos Repositories skill?

Run npx skillmds@latest add coreos/rhcos-repositories in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

What does the Rhcos Repositories skill do?

RHCOS GitHub repositories, package definitions, and test locations It is listed under Coding & Dev Tools on SkillMD.

Is Rhcos Repositories safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Rhcos Repositories?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Rhcos Repositories free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Rhcos Repositories?

coreos (@coreos) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Rhcos Repositories by coreos — Agent Skill

Name: Rhcos Repositories
Author: coreos

File contents

RHCOS Repositories

GitHub repositories, package definitions, and test locations for RHEL CoreOS.

Related: rhcos-build-pipeline, rhcos-versions

GitHub Repositories

Repository	Purpose	Key Files/Directories
coreos/fedora-coreos-config	Upstream FCOS manifests (inherited by RHCOS)	`manifest.yaml`, `manifests/`, `tests/`, `kola-denylist.yaml`
coreos/rhel-coreos-config	RHCOS/SCOS config (RHEL-specific packages)	`manifest-*.yaml`, `packages-rhcos.yaml`, `tests/kola/`, `kola-denylist.yaml`
coreos/coreos-assembler	Build tool (cosa) and kola test framework	`mantle/kola/` (tests), `src/`, `docs/`
coreos/fedora-coreos-pipeline	Jenkins pipeline definitions	`jobs/`, `config.yaml`
openshift/os	Node image layer (adds OCP packages)	`packages-openshift.yaml`, `Containerfile`, `tests/kola/`, `extensions/`

Repository Relationships

fedora-coreos-config is a submodule inside rhel-coreos-config
rhel-coreos-config produces the base image
openshift/os builds FROM the base image to create the node image

Package Definitions

Base OS Packages (Stage 1)

Defined in rhel-coreos-config:

File	Purpose
`packages-rhcos.yaml`	RHCOS-specific packages
`manifest-*.yaml`	Stream-specific manifests (repos, versions)
`packages-overrides.yaml`	Package version overrides

Inherited from fedora-coreos-config:

File	Purpose
`manifests/*.yaml`	Modular package groups
`manifest-lock.*.json`	Per-architecture package locks

OpenShift Packages (Stage 2)

Defined in openshift/os:

File	Purpose
`packages-openshift.yaml`	OCP node packages (kubelet, cri-o, oc, etc.)
`extensions/`	Optional extensions (usbguard, etc.)

Test Locations

Kola tests are distributed across repositories:

Repository	Test Path	Test Type
`fedora-coreos-config`	`tests/kola/`	FCOS-specific tests
`rhel-coreos-config`	`tests/kola/`	RHCOS-specific tests
`openshift/os`	`tests/kola/`	Node image tests
`coreos-assembler`	`mantle/kola/tests/`	Core kola tests

Test Denylists

Each config repo has a kola-denylist.yaml to skip known-failing tests:

fedora-coreos-config/kola-denylist.yaml
rhel-coreos-config/kola-denylist.yaml
openshift/os/kola-denylist.yaml

---name: rhcos-repositoriesdescription: RHCOS GitHub repositories, package definitions, and test locations---# RHCOS RepositoriesGitHub repositories, package definitions, and test locations for RHEL CoreOS.> Related: `rhcos-build-pipeline`, `rhcos-versions`## GitHub Repositories| Repository | Purpose | Key Files/Directories ||------------|---------|----------------------|| [coreos/fedora-coreos-config](https://github.com/coreos/fedora-coreos-config) | Upstream FCOS manifests (inherited by RHCOS) | `manifest.yaml`, `manifests/`, `tests/`, `kola-denylist.yaml` || [coreos/rhel-coreos-config](https://github.com/coreos/rhel-coreos-config) | RHCOS/SCOS config (RHEL-specific packages) | `manifest-*.yaml`, `packages-rhcos.yaml`, `tests/kola/`, `kola-denylist.yaml` || [coreos/coreos-assembler](https://github.com/coreos/coreos-assembler) | Build tool (cosa) and kola test framework | `mantle/kola/` (tests), `src/`, `docs/` || [coreos/fedora-coreos-pipeline](https://github.com/coreos/fedora-coreos-pipeline) | Jenkins pipeline definitions | `jobs/`, `config.yaml` || [openshift/os](https://github.com/openshift/os) | Node image layer (adds OCP packages) | `packages-openshift.yaml`, `Containerfile`, `tests/kola/`, `extensions/` |## Repository Relationships- `fedora-coreos-config` is a **submodule** inside `rhel-coreos-config`- `rhel-coreos-config` produces the **base image**- `openshift/os` **builds FROM** the base image to create the node image## Package Definitions### Base OS Packages (Stage 1)Defined in `rhel-coreos-config`:| File | Purpose ||------|---------|| `packages-rhcos.yaml` | RHCOS-specific packages || `manifest-*.yaml` | Stream-specific manifests (repos, versions) || `packages-overrides.yaml` | Package version overrides |Inherited from `fedora-coreos-config`:| File | Purpose ||------|---------|| `manifests/*.yaml` | Modular package groups || `manifest-lock.*.json` | Per-architecture package locks |### OpenShift Packages (Stage 2)Defined in `openshift/os`:| File | Purpose ||------|---------|| `packages-openshift.yaml` | OCP node packages (kubelet, cri-o, oc, etc.) || `extensions/` | Optional extensions (usbguard, etc.) |## Test LocationsKola tests are distributed across repositories:| Repository | Test Path | Test Type ||------------|-----------|-----------|| `fedora-coreos-config` | `tests/kola/` | FCOS-specific tests || `rhel-coreos-config` | `tests/kola/` | RHCOS-specific tests || `openshift/os` | `tests/kola/` | Node image tests || `coreos-assembler` | `mantle/kola/tests/` | Core kola tests |## Test DenylistsEach config repo has a `kola-denylist.yaml` to skip known-failing tests:- `fedora-coreos-config/kola-denylist.yaml`- `rhel-coreos-config/kola-denylist.yaml`- `openshift/os/kola-denylist.yaml`

Frequently asked questions

Rhcos Repositories