Project Atomic is now sunset

The Atomic Host platform is now replaced by CoreOS. Users of Atomic Host are encouraged to join the CoreOS community on the Fedora CoreOS communication channels.

The documentation contained below and throughout this site has been retained for historical purposes, but can no longer be guaranteed to be accurate.

Project News

Buildah - build your containers from the ground up!

by Tom Sweeney –

Since I’m relatively new to the world of containers and images, I was excited to learn about the Buildah tool. Especially since I’m a native New Englander and it’s a clever play on how we say Builder in these parts.

Buildah is a newly released command line tool for efficiently and quickly building Open Container Initiative (OCI) compliant images and containers. Buildah simplifies the process of creating, building and updating images while decreasing the learning curve of the container environment. It is easily scriptable and can be used in an environment where one needs to spin up containers automatically based on calls from your application. What’s really neat is there is no requirement for a container runtime daemon to be running on your system chewing up resources and complicating the build process.

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Cockpit 143 with New Software Updates Page

by Stef Walter –

Cockpit is the modern Linux admin interface. We release regularly. Here are the release notes from version 143.

Software Updates page for package based operating systems

There is a new Software Updates page for classic dnf/yum/apt based systems, to complement the already existing one for OSTree on Atomic. This uses the PackageKit API for platform independence. This feature is shipped in the new cockpit-packagekit sub-package.

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CentOS Atomic Host 1705 Release

by Jason Brooks –

An updated version of CentOS Atomic Host (tree version 7.1705), is now available.

In this release, we’ve modified the versioning scheme we’re using for the ostree repo to match the monthly major-version.YYMM numbering that the rest of CentOS uses for its monthly releases. Moving forward, we plan on releasing CentOS Atomic host on a monthly schedule. The next CentOS Atomic Host release that will roll up all of June’s software updates, will be versioned 7.1706, and so on in the following months. We also intend to add an additional ostree ref to our repository, called updates, which will enable users to access the latest packages as they become available. Stay tuned during the coming weeks for more information on that option.

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Using kubeadm with CRI-O

by Antonio Murdaca –

CRI-O is a Kubernetes incubator project which is meant to provide an integration path between Open Containers Initiative (OCI) conformant runtimes and the kubelet. Specifically, it implements the Container Runtime Interface (CRI) using OCI conformant runtimes. CRI-O uses runc as its default runtime to run Kubernetes pods. For more information you can read a brief introduction here. If you’re interested into why you should use CRI-O instead of other container runtimes you can read more here.

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