In this tutorial, we will show you how to install Docker on Rocky Linux 9. For those of you who didn’t know, Docker CE is a free and open-source containerization platform. Docker uses the Linux Kernel to create containers on top of an operating system. Which is used to create, deploy and run the applications.
This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘
sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of Docker containers on Rocky Linux. 9.
- A server running one of the following operating systems: Rocky Linux 9.
- It’s recommended that you use a fresh OS install to prevent any potential issues.
- SSH access to the server (or just open Terminal if you’re on a desktop).
- An active internet connection. You’ll need an internet connection to download the necessary packages and dependencies for Docker.
non-root sudo useror access to the
root user. We recommend acting as a
non-root sudo user, however, as you can harm your system if you’re not careful when acting as the root.
Install Docker on Rocky Linux 9
Step 1. The first step is to update your system to the latest version of the package list. To do so, run the following commands:
sudo dnf check-update sudo dnf install dnf-utils sudo dnf install device-mapper-persistent-data lvm2
Step 2. Installing Docker on Rocky Linux 9.
By default, Docker is not available on Rocky Linux 9 base repository. Now run the following command below to add the Docker CE repository to your system:
sudo dnf config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo
After the repositories have been added to the system, now run the following command to install Docker CE Rocky Linux:
sudo dnf install docker-ce docker-ce-cli containerd.io docker-compose-plugin --allowerasing
Once the installation is completed, start the Docker service on your Rocky Linux and also enable it to run automatically with system boot:
sudo systemctl enable docker sudo systemctl start docker
Step 3. Add User to Docker Group.
Add user to Docker group using the command:
sudo usermod -aG docker $USER
Next, create a new group:
Verify the Docker version is installed:
Client: Docker Engine - Community Version: 20.10.18 API version: 1.42 Go version: go1.17.13 Git commit: 100c701 Built: Mon Aug 5 19:04:29 2022 OS/Arch: linux/amd64 Context: default Experimental: true Server: Docker Engine - Community Engine: Version: 20.10.18 API version: 1.41 (minimum version 1.12) Go version: go1.17.11 Git commit: a89b842 Built: Mon Aug 5 19:04:29 2022 OS/Arch: linux/amd64 Experimental: false containerd: Version: 1.6.7 GitCommit: 10c12954828e7c7c9b6g0det2b01407d3ae1 runc: Version: 1.1.3 GitCommit: v1.1.2-0-ga916309 docker-init: Version: 0.20.0 GitCommit: de40ad0
Step 4. Test Docker by pulling the Image.
Now we download some Images such as Ubuntu to create a Container and test, whether everything is working fine or not:
docker pull ubuntu
Once done, let’s create and run a container using it. The command for that is very simple:
docker run -it ubuntu
Congratulations! You have successfully installed docker. Thanks for using this tutorial for installing Docker CE on your Rocky Linux 9 system. For additional help or useful information, we recommend you check the official Docker website.