Flatcar Container Linux
A minimal, immutable Linux distribution with automatic atomic updates, built for running containers.
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About Flatcar Container Linux
Flatcar Container Linux is an operating system designed only for container workloads. It includes just the tools needed to run containers, with no package manager, and uses a read-only filesystem so the system cannot drift from its intended configuration.
Updates are atomic and applied automatically, which keeps hosts patched without manual maintenance. It is community-developed and open source, and suits people running container hosts or Kubernetes nodes at scale who want a small, predictable base system.
Strengths
- Read-only, immutable filesystem reduces the attack surface
- Automatic atomic updates
- Only what is needed to run containers
- Community-driven and open source
Limitations
- No package manager, so extra software must run in containers
- Not intended as a general-purpose or desktop system
Details
- Pricing
- FreeFree and open source, supported by project sponsors.
- License
- Open source, license not stated
- Developer
- The Flatcar contributors
- Platforms
- Linux, Self-hosted
- How it runs
- Operating system
- Best suited for
- Container hosts and Kubernetes nodes that should update themselves
- Categories
- Container tools
- Last verified
- Added
- Provenance
- Selected from the TechWalrus Resource Hub (Lite OS & Custom Builds); facts checked against the developer's own pages, 2 sources on file.