flatcar/Flatcar
Flatcar project repository for issue tracking, project documentation, etc. observed · 2026-08-28
Health v2 · maintenance only
76/100
- Activity 98
- Release rhythm 35
- Longevity 100
Flags: no_releases
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 3103
- days_rel: n/a
- days_push: 12
- n_releases_24m: 0
Adoption not part of the score
1260 stars · 150 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Flatcar Container Linux is a minimal, immutable, container-optimized Linux distribution and the community-driven successor to CoreOS Container Linux. It ships a read-only filesystem, no package manager, and atomic automatic updates with rollback, designed to run container workloads across clouds, virtualization, and bare metal.
Use cases
- run a minimal immutable OS for container workloads
- replace CoreOS Container Linux after its end of life
- deploy Kubernetes nodes with automated atomic OS updates
- provision cloud VMs with Ignition and Butane configs
- reduce attack surface with a read-only, package-manager-free OS
- manage OS updates across large fleets with release channels
When to choose
- you run containerized workloads and want a minimal, immutable host OS
- you need automatic, atomic updates with automatic rollback
- you want a maintained successor to CoreOS Container Linux
- you deploy across multiple clouds, virtualization platforms, or bare metal
When to avoid
- you need a general-purpose Linux distro with a package manager
- you install many non-containerized applications directly on the host
- you require a desktop or interactive workstation environment
Facets
application · maturity active
container-runtime deployment security self-hosted cloud cloud-computing operating-systems self-hosted cloud self-hosted immutable-os container-linux coreos-successor atomic-updates ignition butane minimal-os container-optimized containers devops linux docker kubernetes
7 sources
- readme: https://github.com/flatcar/Flatcar · fetched 2026-08-28 · 624b9e74ab24
- homepage: https://www.flatcar.org · fetched 2026-08-29 · a20a21f5e6a9
- site_page: https://www.flatcar.org/docs · fetched 2026-08-29 · b3ce796f1845
- site_page: https://www.flatcar.org/docs/latest · fetched 2026-08-29 · aa80c4a36931
- site_page: https://www.flatcar.org/blog/2026/07/a-fresh-coat-of-paint-for-the-flatcar-docs · fetched 2026-08-29 · e3b8cccaf3b2
- site_page: https://www.flatcar.org/releases · fetched 2026-08-29 · a478a1652882
- site_page: https://www.flatcar.org/faq · fetched 2026-08-29 · 17f34a1aaf7a
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| flatcar/Flatcar | main | 76 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem