Setting up Docker on CentOS 7
If you’re looking to leverage the power of Docker on your CentOS 7 machine, you’ve come to the right place! Docker is a powerful tool that allows you to containerize applications and run them in isolated environments, making it easy to deploy and manage your software. In this guide, we’ll walk you through the steps to set up Docker on CentOS 7.
Step 1: Update System Packages
Before we begin, it’s essential to ensure that your system is up to date. Run the following commands in your terminal to update the package index and install necessary updates:
sudo yum check-update
sudo yum update -y
Step 2: Install Docker-CE
Next, we’ll install Docker-CE using the official Docker repository. Run the following commands to add the repository and install Docker-CE:
sudo yum install -y yum-utils
sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
sudo yum install docker-ce
Step 3: Start and Enable Docker
Once Docker-CE is installed, start and enable the Docker service to ensure it starts automatically upon system boot. Run the following commands:
sudo systemctl start docker
sudo systemctl enable docker
Step 4: Verify Docker Installation
To verify that Docker is installed correctly, run the following command:
sudo docker --version
If Docker is installed correctly, you should see the version number displayed in your terminal.
Step 5: Run a Docker Container
Now that Docker is up and running, let’s test it by pulling and running a container. Use the following command to pull the official Docker Hello World image and run it:
sudo docker run hello-world
If everything is set up correctly, you should see a message indicating that your Docker installation is working correctly.
Congratulations! You’ve successfully set up Docker on your CentOS 7 machine. You’re now ready to start containerizing your applications and reaping the benefits of Docker’s powerful containerization technology.