rkt is a pod-native container engine for Linux. It is composable, secure, and built on standards.
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rkt - the pod-native container engine

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rkt Logo

rkt (pronounced like a "rocket") is a CLI for running application containers on Linux. rkt is designed to be secure, composable, and standards-based.

Some of rkt's key features and goals include:

Project status

The rkt v1.x series provides command line user interface and on-disk data structures stability for external development. Any major changes to those primary areas will be clearly communicated, and a formal deprecation process conducted for any retired features.

Check out the roadmap for more details on the future of rkt.

Trying out rkt

To get started quickly using rkt for the first time, start with the "trying out rkt" document. Also check rkt support on your Linux distribution. For an end-to-end example of building an application from scratch and running it with rkt, check out the getting started guide.

Getting help with rkt

There are a number of different avenues for seeking help and communicating with the rkt community:

  • For bugs and feature requests (including documentation!), file an issue
  • For general discussion about both using and developing rkt, join the rkt-dev mailing list
  • For real-time discussion, join us on IRC: #rkt-dev on freenode.org
  • For more details on rkt development plans, check out the GitHub milestones

Most discussion about rkt development happens on GitHub via issues and pull requests. The rkt developers also host a semi-regular community sync meeting open to the public. This sync usually features demos, updates on the roadmap, and time for anyone from the community to ask questions of the developers or share users stories with others. For more details, including how to join and recordings of previous syncs, see the sync doc on Google Docs.

Contributing to rkt

rkt is an open source project and contributions are gladly welcomed! See the Hacking Guide for more information on how to build and work on rkt. See CONTRIBUTING for details on submitting patches and the contribution workflow.


Unless otherwise noted, all code in the rkt repository is licensed under the Apache 2.0 license. Some portions of the codebase are derived from other projects under different licenses; the appropriate information can be found in the header of those source files, as applicable.

Security disclosure

If you suspect you have found a security vulnerability in rkt, please do not file a GitHub issue, but instead email security@coreos.com with the full details, including steps to reproduce the issue. CoreOS is currently the primary sponsor of rkt development, and all reports are thoroughly investigated by CoreOS engineers. For more information, see the CoreOS security disclosure page.

Known issues

Check the troubleshooting document.

Related Links

Integrations and Production Users