Building the Next Generation Container OS

Use immutable infrastructure to deploy and scale your containerized applications. Project Atomic builds OSes, tools, and containers for cloud native platforms.

Buildah, a different way to build containers, is now available for testing.

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Atomic Host

Atomic Host provides "immutable infrastructure" for deploying to hundreds or thousands of servers in your private or public cloud. Available in Fedora Atomic Host, CentOS Atomic Host, and Red Hat Atomic Host editions depending on your platform and support needs.

To balance the need between long-term stability and new features, we are providing different releases of Atomic Host for you to choose from.

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Container Registries

You can get your containerized applications from the CentOS Container Pipeline and the Fedora Layered Image Build Service

Trusted container content from the projects you already trust.

Learn more about Fedora Layered Images

Learn more about CentOS Container Pipeline

Community News

Fedora 26 Atomic Host October 16 Release

A new Fedora Atomic Host update is available via an OSTree commit:

Commit: d518b37c348eb814093249f035ae852e7723840521b4bcb4a271a80b5988c44a
Version: 26.150

The most notable changes in this release are a new version of the kernel, kubernetes, rpm-ostree and dnsmasq. The dnsmasq update fixes quite a few CVEs. Click through for a complete list.

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Fedora 26 Atomic Host October 5 Release

A new Fedora Atomic Host update is available via an OSTree commit:

Commit: 541abd650d1ffb3929e2ba8114436a0b04ee41da76a691af669dd037589a1421
Version: 26.141

A couple of notes about this release:

  • This release does not include fixes for the dnsmasq security vulnerabilities. Please help us test out the patched rpms by rebasing to our testing tree:
    rpm-ostree rebase fedora/26/x86_64/testing/atomic-host

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New CentOS Atomic Release and Kubernetes System Containers Now Available

The CentOS Atomic SIG has released an updated version of CentOS Atomic Host (7.1708), a lean operating system designed to run Linux containers, built from standard CentOS 7 RPMs, and tracking the component versions included in Red Hat Enterprise Linux Atomic Host.

This release, which is based on the RHEL 7.4 source code, includes an updated kernel that supports overlayfs container storage, among other enhancements.

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