How To Install Docker in Rocky Linux 9.4

To Install Docker In Rocky Linux 9.4

Introduction

Docker has emerged as an essential tool for both development and operations teams, offering a platform to efficiently build, share, and run containerized applications. For professionals utilizing Rocky Linux 9.4, the installation of Docker can greatly enhance development and deployment workflows. This article will provide a comprehensive guide to the steps required for installing and utilizing Docker on Rocky Linux 9.4.

Procedure

Step1: Check the OS version in terminal by using following commands

[root@linuxhelp ~]# cat /etc/os-release
NAME="Rocky Linux"
VERSION="9.4 (Blue Onyx)"
ID="rocky"
ID_LIKE="rhel centos fedora"
VERSION_ID="9.4"
PLATFORM_ID="platform:el9"
PRETTY_NAME="Rocky Linux 9.4 (Blue Onyx)"
ANSI_COLOR="0;32"
LOGO="fedora-logo-icon"
CPE_NAME="cpe:/o:rocky:rocky:9::baseos"
HOME_URL="https://rockylinux.org/"
BUG_REPORT_URL="https://bugs.rockylinux.org/"
SUPPORT_END="2032-05-31"
ROCKY_SUPPORT_PRODUCT="Rocky-Linux-9"
ROCKY_SUPPORT_PRODUCT_VERSION="9.4"
REDHAT_SUPPORT_PRODUCT="Rocky Linux"
REDHAT_SUPPORT_PRODUCT_VERSION="9.4"

Step2: Check the package is installed or not in terminal

[root@linuxhelp ~]# rpm -q docker
package docker is not installed

Step3: Update the Linux server by using following commands

[root@linuxhelp ~]# dnf check-update
Last metadata expiration check: 0:05:54 ago on Wed 07 Aug 2024 03:00:55 PM EDT.
NetworkManager.x86_64                            1:1.46.0-13.el9_4                 baseos   
NetworkManager-adsl.x86_64                       1:1.46.0-13.el9_4                 baseos   
NetworkManager-bluetooth.x86_64                  1:1.46.0-13.el9_4                 baseos   
NetworkManager-config-server.noarch              1:1.46.0-13.el9_4                 baseos   
NetworkManager-libnm.x86_64                      1:1.46.0-13.el9_4                 baseos   
NetworkManager-team.x86_64                       1:1.46.0-13.el9_4                 baseos   
NetworkManager-tui.x86_64                        1:1.46.0-13.el9_4                 baseos   
NetworkManager-wifi.x86_64                       1:1.46.0-13.el9_4                 baseos  

Step4: Add the official Docker repository.

[root@linuxhelp ~]# dnf config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
Adding repo from: https://download.docker.com/linux/centos/docker-ce.repo

Step5: Install Docker, which is composed of three packages by using following commands

[root@linuxhelp ~]# dnf install docker-ce docker-ce-cli containerd.io
Docker CE Stable - x86_64                                                                                                     226 kB/s |  53 kB     00:00    
Dependencies resolved.
==============================================================================================================================================================
 Package                                        Architecture                Version                               Repository                             Size
==============================================================================================================================================================
Installing:
 containerd.io                                  x86_64                      1.7.19-3.1.el9                        docker-ce-stable                       43 M
 docker-ce                                      x86_64                      3:27.1.1-1.el9                        docker-ce-stable                       27 M
 docker-ce-cli                                  x86_64                      1:27.1.1-1.el9                        docker-ce-stable                      7.8 M
Installing weak dependencies:
 docker-buildx-plugin                           x86_64                      0.16.1-1.el9                          docker-ce-stable                       14 M
 docker-ce-rootless-extras                      x86_64                      27.1.1-1.el9                          docker-ce-stable                      4.0 M
 docker-compose-plugin                          x86_64                      2.29.1-1.el9                          docker-ce-stable                       13 M

Transaction Summary
==============================================================================================================================================================
Install  6 Packages

Total download size: 109 M
Installed size: 422 M
Is this ok [y/N]: y
Downloading Packages:
(1/6): docker-buildx-plugin-0.16.1-1.el9.x86_64.rpm                                                                            17 MB/s |  14 MB     00:00    
(2/6): docker-ce-27.1.1-1.el9.x86_64.rpm                                                                                       20 MB/s |  27 MB     00:01    
(3/6): containerd.io-1.7.19-3.1.el9.x86_64.rpm                                                                                 25 MB/s |  43 MB     00:01    
(4/6): docker-ce-cli-27.1.1-1.el9.x86_64.rpm                                                                                  7.5 MB/s | 7.8 MB     00:01    
(5/6): docker-ce-rootless-extras-27.1.1-1.el9.x86_64.rpm                                                                      7.1 MB/s | 4.0 MB     00:00    
(6/6): docker-compose-plugin-2.29.1-1.el9.x86_64.rpm                                                                           28 MB/s |  13 MB     00:00    
--------------------------------------------------------------------------------------------------------------------------------------------------------------
Total                                                                                                                          48 MB/s | 109 MB     00:02     
Docker CE Stable - x86_64                                                                                                      23 kB/s | 1.6 kB     00:00    
Importing GPG key 0x621E9F35:

Step6: Start the Docker daemon process.

[root@linuxhelp ~]# systemctl start docker

Step7: Enable the Docker daemon:

[root@linuxhelp ~]# systemctl enable docker
Created symlink /etc/systemd/system/multi-user.target.wants/docker.service → /usr/lib/systemd/system/docker.service.

Step8: Check the status in Docker Daemon by using following commands

[root@linuxhelp ~]# systemctl status docker
● docker.service - Docker Application Container Engine
     Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; preset: disabled)
     Active: active (running) since Wed 2024-08-07 15:08:35 EDT; 22s ago
TriggeredBy: ● docker.socket
       Docs: https://docs.docker.com
   Main PID: 8741 (dockerd)
      Tasks: 9
     Memory: 26.4M
        CPU: 314ms
     CGroup: /system.slice/docker.service
             └─8741 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock

Aug 07 15:08:31 linuxhelp systemd[1]: Starting Docker Application Container Engine...
Aug 07 15:08:31 linuxhelp dockerd[8741]: time="2024-08-07T15:08:31.726331641-04:00" level=info msg="Starting up"
Aug 07 15:08:31 linuxhelp dockerd[8741]: time="2024-08-07T15:08:31.814915507-04:00" level=info msg="Loading containers: start."
Aug 07 15:08:32 linuxhelp dockerd[8741]: time="2024-08-07T15:08:32.386490390-04:00" level=info msg="Firewalld: created docker-forwarding policy"

Step9: Create the image in container using docker command

root@linuxhelp ~]# docker container create -i -t --name mycontainer alpine
Unable to find image 'alpine:latest' locally
latest: Pulling from library/alpine
c6a83fedfae6: Pull complete
Digest: sha256:0a4eaa0eecf5f8c050e5bba433f58c052be7587ee8af3e8b3910ef9ab5fbe9f5
Status: Downloaded newer image for alpine:latest
16ff2fec83e1deb9bedf3694c9de166db213822197dac4dfe866544a1432f5f0

Step10: List out the images by using following commands

[root@linuxhelp ~]# docker images
REPOSITORY   TAG       IMAGE ID       CREATED       SIZE
alpine       latest    324bc02ae123   2 weeks ago   7.8MB
[root@linuxhelp ~]#

Conclusion:

There’s a whole lot more to Docker than has been given in this article, but this should be enough to getting you started working with it on Rocky Linux 9. Like most open source projects, Docker is built from a fast-developing codebase.