How to uninstall Docker Ubuntu?

Uninstalling Docker on Ubuntu: A Step-by-Step Guide

Introduction

Docker is a popular containerization platform that allows developers to create and manage containers on their local machines. However, sometimes, users may need to uninstall Docker to free up space, switch to a different containerization platform, or troubleshoot issues. In this article, we will guide you through the process of uninstalling Docker on Ubuntu.

Why Uninstall Docker?

Before we dive into the uninstallation process, let’s consider some reasons why you might want to uninstall Docker:

• Free up space: Docker containers can consume a significant amount of disk space, especially if you have a large number of containers running.
• Switch to a different containerization platform: Docker is not the only containerization platform available. You may want to try a different platform, such as Kubernetes or rkt.
• Troubleshoot issues: Uninstalling Docker can help you identify and resolve any issues related to the platform.

Step-by-Step Uninstallation Guide

Here’s a step-by-step guide to uninstalling Docker on Ubuntu:

Step 1: Check if Docker is installed

Before you can uninstall Docker, you need to check if it’s installed on your system. You can do this by running the following command:

sudo apt-get list docker

This command will list all the packages that are available for installation. If Docker is installed, you should see a list of packages, including docker, docker.io, docker-compose, and docker-py.

Step 2: Uninstall Docker

Once you’ve confirmed that Docker is installed, you can uninstall it using the following command:

sudo apt-get remove docker docker.io docker-compose docker-py

This command will remove all the packages that are related to Docker, including the Docker daemon, Docker client, and Docker plugins.

Step 3: Remove Docker Configuration Files

After uninstalling Docker, you need to remove the configuration files that are associated with the platform. You can do this by running the following command:

sudo rm -rf /etc/docker/ /usr/local/share/docker/ /usr/local/share/docker-compose/ /usr/local/share/docker-py/

This command will remove all the configuration files that are associated with Docker.

Step 4: Remove Docker Data

Finally, you need to remove the data that’s associated with Docker. You can do this by running the following command:

sudo rm -rf /var/lib/docker/ /var/lib/docker/containers/

This command will remove all the data that’s associated with Docker.

Troubleshooting Common Issues

Here are some common issues that you may encounter when uninstalling Docker, along with some troubleshooting steps:

• Error: "docker daemon not running"

  • Solution: Check if the Docker daemon is running by running the following command:

    sudo systemctl status docker

  • Solution: If the Docker daemon is not running, you can start it by running the following command:

    sudo systemctl start docker

• Error: "docker-compose not found"

  • Solution: Check if the Docker Compose plugin is installed by running the following command:

    sudo apt-get install docker-compose

  • Solution: If the Docker Compose plugin is not installed, you can install it by running the following command:

    sudo apt-get install docker-compose

• Error: "docker-py not found"

  • Solution: Check if the Docker Python client is installed by running the following command:

    sudo apt-get install docker-python

  • Solution: If the Docker Python client is not installed, you can install it by running the following command:

    sudo apt-get install docker-python

Conclusion

Uninstalling Docker on Ubuntu is a straightforward process that can help you free up space, switch to a different containerization platform, or troubleshoot issues. By following the steps outlined in this article, you should be able to successfully uninstall Docker and start using a different containerization platform.