{"id":15986,"date":"2019-03-14T13:42:49","date_gmt":"2019-03-14T13:42:49","guid":{"rendered":"https:\/\/www.hostinger.com\/tutorials\/?p=15986"},"modified":"2026-03-09T19:19:41","modified_gmt":"2026-03-09T19:19:41","slug":"how-to-install-docker-on-centos","status":"publish","type":"post","link":"\/ng\/tutorials\/how-to-install-docker-on-centos\/","title":{"rendered":"How to install Docker on CentOS 9 Stream + Docker Compose"},"content":{"rendered":"

Many sysadmins use Docker in their work because of the advantages it provides when handling containers in Linux. Docker is used primarily for the deployment of images containing applications or services that we want to install in our network.<\/p>

This tutorial will show you how to install Docker on CentOS 9 Stream, and then how to install Docker Compose to empower your VPS even more.<\/p>

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Understanding Docker and containers<\/h2>

Docker<\/a> is an open source technology that manages and automates the deployment of applications through a container. These containers are distributed through images that contain everything necessary to run an application. For example, there are images from WordPress, Nginx, MariaDB and many other services or applications.<\/p>

The main advantage of using Docker is that we can “install” services or applications on many systems regardless of the hardware. For example, we can make an image of our application, and it can run on any computer that has Docker installed. All this regardless of the operating system or hardware in question.<\/p>

Best of all, starting to use this utility is easy. Let’s learn how to Install Docker on CentOS 9 Sream.<\/p>

How to install Docker on CentOS 9 Stream<\/h2>

Installing Docker on CentOS 9 is simple. To do this, it is necessary to connect to our server using SSH. Check out our PuTTY tutorial<\/a> if you’re having issues.<\/p>

ssh your-user@your-server<\/pre>
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:<\/p>
yum install -y yum-utils device-mapper-persistent-data lvm2<\/pre>
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:<\/p>
yum-config-manager  --add-repo https:\/\/download.docker.com\/linux\/centos\/docker-ce.repo<\/pre>
After that, we can install Docker on CentOS 9 Stream by running the following command:<\/p>
yum install docker-ce<\/pre>
We now know how to install Docker on CentOS. But it’s not running yet! To enable and start docker, execute the following commands:<\/p>
systemctl enable docker<\/pre>
systemctl start docker<\/pre>
Finally, we can check the status of the service to check that everything has gone well:<\/p>
systemctl status docker<\/pre>
In the output we should see a green line indicating that Docker is up and running.<\/p>
        
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Hostinger VPS plans also offer a convenient Ubuntu 24.04 64bit with Docker<\/b> operating system template. All you need to do is navigate to the Operating System<\/b> section and select it under the Applications<\/b> drop-down menu. Learn more about Hostinger's Docker VPS<\/a> solution.<\/p>\n                    <\/div>\n        \n\n\n\n<\/p>
Docker basics<\/h2>
First, let us run Docker’s “Hello World” command as a start. To do it, we need to run the following command:<\/p>
docker run hello-world<\/pre>
This test image is the one that Docker recommends checking every time you reinstall the utility.<\/p>
We can verify all the images we have in our system with this command:<\/p>
docker images<\/pre>
Or search the Docker repository for an available image with the search command.<\/p>
docker search [search]<\/pre>
For example, we can search for an image related to CentOS 9.<\/p>
docker search centos9<\/pre>
And if we want to download it, we can do it with the following command:<\/p>
docker pull [image_name]<\/pre>
Finally, to execute it we will use the run command. We will be able to call the image by its ID or directly by its name.<\/p>
docker run -t -i [image_id or image_name]<\/pre>
The option -i<\/strong> means that we will make the image interactive, while the option -t<\/strong> means we will have access to a terminal and can simulate one.<\/p>
To exit from an image, we need to press CTRL+D<\/strong>.<\/p>
How to install Docker Compose on CentOS 9 Stream<\/h2>
Docker Compose is a utility that allows us to display images in Docker. It was created because many programs require other services to run. For example, with WordPress or another CMS, we require a functional web server, the image of a database manager, and finally the image of the application.<\/p>
We would have to deploy them one by one and configure them. With Docker Composer we can define everything in a file, with all the images dependent on the main one and load them normally.<\/p>
To install Docker Compose on CentOS 9 Stream, we need to run this command:<\/p>
curl -L \"https:\/\/github.com\/docker\/compose\/releases\/download\/1.23.2\/docker-compose-$(uname -s)-$(uname -m)\" -o \/usr\/local\/bin\/docker-compose<\/pre>
In case we do not have curl installed, we can do it using the following command:<\/p>
yum install curl<\/pre>
Then, change the permissions using the chmod command<\/a> to make the Docker Compose binary executable:<\/p>
chmod +x \/usr\/local\/bin\/docker-compose<\/pre>
And now, to ensure there are no problems when using the utility in the terminal, we will have to make a symbolic link<\/a> to the system:<\/p>
ln -s \/usr\/local\/bin\/docker-compose \/usr\/bin\/docker-compose<\/pre>
Finally, check the installed version:<\/p>
docker-compose --version<\/pre>
And we’re ready to use both Docker, and Docker Compose.<\/p>
Conclusion<\/h2>
The deployment of applications in the form of containers can help you avoid compatibility issues. In addition, Docker facilitates the installation and maintenance of existing containers. By adding a tool such as Compose to Docker’s technology, productivity and efficiency can be improved even further.<\/p>\n","protected":false},"excerpt":{"rendered":"
Many sysadmins use Docker in their work because of the advantages it provides when handling containers in Linux. Docker is used primarily for the deployment of images containing applications or services that we want to install in our network. This tutorial will show you how to install Docker on CentOS 9 Stream, and then how […]<\/p>\n
Read More…<\/a><\/p>\n","protected":false},"author":110,"featured_media":145112,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rank_math_title":"How to Install Docker on CentOS 9","rank_math_description":"Learn how you can improve your development toolset with a new utility! Learn how to install Docker on CentOS 9. Docker Compose included!","rank_math_focus_keyword":"install docker centos","footnotes":""},"categories":[22644],"tags":[],"class_list":["post-15986","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vps"],"hreflangs":[{"locale":"en-US","link":"https:\/\/www.hostinger.com\/tutorials\/how-to-install-docker-on-centos","default":0},{"locale":"es-ES","link":"https:\/\/www.hostinger.com\/es\/tutoriales\/instalar-docker-centos","default":0},{"locale":"id-ID","link":"https:\/\/www.hostinger.com\/id\/tutorial\/cara-install-docker-centos","default":0},{"locale":"en-GB","link":"https:\/\/www.hostinger.com\/uk\/tutorials\/how-to-install-docker-on-centos","default":0},{"locale":"en-MY","link":"https:\/\/www.hostinger.com\/my\/tutorials\/how-to-install-docker-on-centos","default":0},{"locale":"en-PH","link":"https:\/\/www.hostinger.com\/ph\/tutorials\/how-to-install-docker-on-centos","default":0},{"locale":"es-MX","link":"https:\/\/www.hostinger.com\/mx\/tutoriales\/instalar-docker-centos","default":0},{"locale":"es-CO","link":"https:\/\/www.hostinger.com\/co\/tutoriales\/instalar-docker-centos","default":0},{"locale":"es-AR","link":"https:\/\/www.hostinger.com\/ar\/tutoriales\/instalar-docker-centos","default":0},{"locale":"en-IN","link":"https:\/\/www.hostinger.com\/in\/tutorials\/how-to-install-docker-on-centos","default":0},{"locale":"en-CA","link":"https:\/\/www.hostinger.com\/ca\/tutorials\/how-to-install-docker-on-centos","default":0},{"locale":"en-AU","link":"https:\/\/www.hostinger.com\/au\/tutorials\/how-to-install-docker-on-centos","default":0},{"locale":"en-NG","link":"https:\/\/www.hostinger.com\/ng\/tutorials\/how-to-install-docker-on-centos","default":0}],"_links":{"self":[{"href":"https:\/\/www.hostinger.com\/ng\/tutorials\/wp-json\/wp\/v2\/posts\/15986","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hostinger.com\/ng\/tutorials\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hostinger.com\/ng\/tutorials\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hostinger.com\/ng\/tutorials\/wp-json\/wp\/v2\/users\/110"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hostinger.com\/ng\/tutorials\/wp-json\/wp\/v2\/comments?post=15986"}],"version-history":[{"count":21,"href":"https:\/\/www.hostinger.com\/ng\/tutorials\/wp-json\/wp\/v2\/posts\/15986\/revisions"}],"predecessor-version":[{"id":145111,"href":"https:\/\/www.hostinger.com\/ng\/tutorials\/wp-json\/wp\/v2\/posts\/15986\/revisions\/145111"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hostinger.com\/ng\/tutorials\/wp-json\/wp\/v2\/media\/145112"}],"wp:attachment":[{"href":"https:\/\/www.hostinger.com\/ng\/tutorials\/wp-json\/wp\/v2\/media?parent=15986"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hostinger.com\/ng\/tutorials\/wp-json\/wp\/v2\/categories?post=15986"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hostinger.com\/ng\/tutorials\/wp-json\/wp\/v2\/tags?post=15986"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}