rancher/k3os
Purpose-built OS for Kubernetes, fully managed by Kubernetes. observed · 2026-08-28
Health v2 · maintenance only
10/100
- Activity 0
- Release rhythm 8
- Longevity 100
Flags: archived
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 2737
- days_rel: n/a
- days_push: 999
- n_releases_24m: 0
Adoption not part of the score
3478 stars · 392 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
k3OS is a minimal Linux distribution purpose-built to run Kubernetes via k3s, designed so the entire OS is managed and upgraded through kubectl once nodes join a cluster. The project is no longer maintained and has been superseded by Rancher's Elemental stack.
Use cases
- run a minimal linux os dedicated to kubernetes nodes
- manage os configuration and upgrades with kubectl
- boot a single-node kubernetes cluster from an iso in a vm
- provision lightweight edge or bare-metal k3s nodes
- create custom os images for kubernetes appliances
When to choose
- you maintain an existing k3os deployment and need reference material
- you want a frozen, minimal k3s-only os for an isolated legacy environment
When to avoid
- starting a new project - use Rancher Elemental instead
- you need a supported, production-ready immutable os for kubernetes
- you need full general-purpose linux tooling on cluster nodes
- you require ARM support or recent kubernetes versions
Facets
application · maturity abandoned
container-orchestration deployment infrastructure-as-code self-hosted infrastructure-as-code operating-systems cloud-computing self-hosted go k3s immutable-os linux-distribution edge-computing kubernetes-os deprecated rancher containers devops linux kubernetes
5 sources
- readme: https://github.com/rancher/k3os · fetched 2026-08-28 · 83fc8cdeba24
- homepage: https://k3os.io · fetched 2026-08-29 · c0966537d2b4
- site_page: https://elemental.docs.rancher.com/quickstart-ui · fetched 2026-08-29 · d13fd85018b0
- site_page: https://elemental.docs.rancher.com/quickstart-cli · fetched 2026-08-29 · 21b5e0151f76
- site_page: https://elemental.docs.rancher.com/installation · fetched 2026-08-29 · 77acc63b2bf3
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| rancher/k3os | main | 10 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem