Docker is supported Fedora


Docker is supported on the following versions of Fedora:

Currently the Fedora project will only support Docker when running on kernels shipped by the distribution. There are kernel changes which will cause issues if one decides to step outside that box and run non-distribution kernel packages.

Fedora 21 and later installation

Install the docker package which will install Docker on our host.

$ sudo yum -y install docker

To update the docker package:

$ sudo yum -y update docker

Please continue with the Starting the Docker daemon.

Fedora 20 installation

For Fedora 20, there is a package name conflict with a system tray application and its executable, so the Docker RPM package was called docker-io.

To proceed with docker-io installation on Fedora 20, please remove the docker package first.

$ sudo yum -y remove docker
$ sudo yum -y install docker-io

To update the docker package:

$ sudo yum -y update docker-io

Please continue with the Starting the Docker daemon.

Starting the Docker daemon

Now that it’s installed, let’s start the Docker daemon.

$ sudo systemctl start docker

If we want Docker to start at boot, we should also:

$ sudo systemctl enable docker

Now let’s verify that Docker is working.

$ sudo docker run -i -t fedora /bin/bash

Note: If you get a Cannot start container error mentioning SELinux or permission denied, you may need to update the SELinux policies. This can be done using sudo yum upgrade selinux-policy and then rebooting.

Granting rights to users to use Docker

The docker command line tool contacts the docker daemon process via a socket file/var/run/docker.sock owned by root:root. Though it’s recommended to use sudo for docker commands, if users wish to avoid it, an administrator can create a docker group, have it own/var/run/docker.sock, and add users to this group.

$ sudo groupadd docker
$ sudo chown root:docker /var/run/docker.sock
$ sudo usermod -a -G docker $USERNAME

Custom daemon options

If you need to add an HTTP Proxy, set a different directory or partition for the Docker runtime files, or make other customizations, read our Systemd article to learn how to customize your Systemd Docker daemon options.

What next?

Continue with the User Guide.



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