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.


A remote manager for GNU/Linux servers

  • Cockpit is a server manager that makes it easy to administer your GNU/Linux servers via a web browser.

  • Cockpit makes it easy for any sysadmin to perform simple tasks, such as administering storage, inspecting journals and starting and stopping services.

  • Jumping between the terminal and the web tool is no problem. A service started via Cockpit can be stopped via the terminal. Likewise, if an error occurs in the terminal, it can be seen in the Cockpit journal interface.

  • You can monitor and administer several servers at the same time. Just add them with a single click and your machines will look after its buddies.

Cockpit and Docker

Cockpit also makes it easy to monitor and administer Docker containers running on Cockpit-managed servers such as Project Atomic hosts.

  • Monitor resources consumed by containers
  • Adjust resources available to containers
    • Resource limits enforced by the CGroup subsystem in the Linux kernel
    • Adjust CPU shares
    • Assign memory limits
    • More CGroup policy controls to come
  • Stop, Start, Delete and Commit container instances
  • Run and Delete container images

Starting and Using Cockpit

  1. After starting your atomic host, you need to install and run the cockpit container:
    • $ sudo atomic install cockpit/ws
    • $ sudo atomic run cockpit/ws
  2. You can now use the cockpit management interface at http://yourhost:9090

For information on adding a systemd service file to ensure that the cockpit/ws container runs on system startup, see this blog post, and see this post to learn how to run cockpit via cloud-init.

Learn More About Cockpit

For more information, check out the Cockpit documentation at the project site.