How to Install Docker on CentOS 7

Installing Docker on CentOS 7 is simple. To do this, it is necessary to connect to our server using SSH:

ssh your-user@your-server

Then, we have to install a series of packages prior to installing Docker. We need to be the root user and run the following line in the command line:

yum install -y yum-utils device-mapper-persistent-data lvm2

The easiest and safest way to complete the process is through Docker’s official repositories. To do this, it is necessary to execute this line:

yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

After that, we can install Docker on CentOS 7 by running the following command:

yum install docker-ce

We now know how to install Docker on CentOS. But it’s not running yet! To enable and start docker, execute the following commands:

systemctl enable docker

systemctl start docker

Finally, we can check the status of the service to check that everything has gone well:

systemctl status docker

In the output, we should see a green line indicating that Docker is up and running.