How To Install Docker On Rocky Linux VM: Beginner's Guide With Nginx Demo

Are you looking to Install Docker on Rocky Linux and explore containerization? Docker is a powerful tool that simplifies application deployment, making it an essential skill for developers and DevOps professionals.

In this guide, you’ll learn how to Install Docker on Rocky Linux step by step and set up a simple Nginx container. If you’re a beginner, this tutorial is tailored just for you! Watch the detailed process in the video.

Step-by-Step Guide to Install Docker on Rocky Linux

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Step-by-Step Guide to Install Docker on Rocky Linux

Step 1: Update the System

Step 2: Install Required Dependencies

Step 3: Add Docker’s Official Repository

Step 4: Install Docker on Rocky Linux

Step 5: Start and Enable Docker Service

Step 6: Verify Docker Installation

Step 7: Run an Nginx Container

Step 8: Access the Nginx Container

Step 9: Stop the Nginx Container

FAQs

Conclusion:

Step 1: Update the System

Before proceeding to Install Docker on Rocky Linux, it’s essential to update your system. This ensures compatibility and the latest security patches.

Run the following command in your terminal:

sudo dnf update -y

Step 2: Install Required Dependencies

Docker requires some dependencies to function smoothly. Install yum-utils to manage repositories efficiently.

Command:

sudo dnf install -y yum-utils

Step 3: Add Docker’s Official Repository

To access the latest Docker packages, add Docker’s official repository to your Rocky Linux system.

Command:

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

Step 4: Install Docker on Rocky Linux

Now, you’re ready to Install Docker on Rocky Linux along with its required components.

Command:

sudo dnf install -y docker-ce docker-ce-cli containerd.io

Step 5: Start and Enable Docker Service

After installing Docker, start its service and enable it to run at boot.

Commands:

sudo systemctl start docker  
sudo systemctl enable docker

Step 6: Verify Docker Installation

To ensure Docker is installed successfully:

Check the version:
```
docker --version
```
Run a test container:
```
sudo docker run hello-world
```

If permissions errors occur, add your user to the Docker group:

sudo usermod -aG docker $USER

Step 7: Run an Nginx Container

Let’s test Docker by running an Nginx container. This demonstrates Docker’s simplicity and flexibility.

Command:

sudo docker run -d -p 8080:80 nginx

Step 8: Access the Nginx Container

Visit your VM’s IP address or localhost:8080 in your browser. If Docker is configured correctly, you’ll see the Nginx welcome page.

Step 9: Stop the Nginx Container

To stop the Nginx container:

List running containers:
```
sudo docker ps
```
Stop the container:
```
sudo docker stop <CONTAINER_ID>
```

FAQs

1. Why should I Install Docker on Rocky Linux?
Installing Docker allows you to containerize applications for easy deployment and scalability, making it an essential tool for development and testing.

2. Is Docker free to use on Rocky Linux?
Yes, Docker CE (Community Edition) is free and fully supported on Rocky Linux.

3. How do I uninstall Docker from Rocky Linux?
Run the following command to uninstall Docker:

sudo dnf remove -y docker-ce docker-ce-cli containerd.io

4. Can I run GUI applications in Docker on Rocky Linux?
Yes, but it requires additional configuration. For basic setups, Docker is typically used for CLI-based applications.

5. What’s the difference between Docker CE and Docker EE?
Docker CE (Community Edition) is free and ideal for individuals or small teams, while Docker EE (Enterprise Edition) includes advanced security and support features.

Conclusion:

Congratulations! You’ve successfully learned how to Install Docker on Rocky Linux and run a simple Nginx container. Docker simplifies containerization and is a vital tool for modern DevOps workflows.

Check out the detailed tutorial in the video. Keep experimenting and enhancing your containerization skills!