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Asked: September 23, 20242024-09-23T17:32:26+05:30 2024-09-23T17:32:26+05:30In: Docker, Linux, Ubuntu

What are the steps to fully remove Docker from an Ubuntu system?

anonymous user

I’ve been tinkering around with Docker on my Ubuntu machine, and while it was fun to play with, I think it’s time to say goodbye to it for now. Here’s the thing: I’m not entirely sure how to remove it completely from my system. I’ve looked up some guides online, but they all seem to provide different steps, and I’m wondering if anyone here has a straightforward process.

So, here’s what I’m dealing with—I’ve been using Docker Desktop for a while, and I tried a few containers just to see how they work. Now, I’m starting to feel like it’s taking up too much space, and honestly, I want to clean up my system a bit. I just want to make sure that when I decide to uninstall Docker, I do it right and don’t leave any trace behind.

I guess my main questions are:

1. What commands should I be using?
2. Are there specific folders or files that I need to look for to ensure that everything is removed?
3. How do I deal with Docker images, containers, and volumes? I want to be sure that all of that is gone, too.

If anyone has gone through this process and can lay out the steps in a way that’s easy to follow, I would really appreciate it! I’m not super advanced with Linux commands, so the simpler, the better.

Also, if there’s anything I should be aware of, like common issues or mistakes to avoid, please share! I would love to hear from anyone who has done this before or has some tips. It would be great to have a clear plan so I can get my system back to a cleaner state without any lingering Docker remnants. Thanks in advance for your help!

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    1. anonymous user
      2024-09-23T17:32:27+05:30Added an answer on September 23, 2024 at 5:32 pm

      How to Completely Uninstall Docker on Ubuntu

      Uninstalling Docker might seem a bit tricky, but don’t worry! Here’s a simple step-by-step guide to help you out:

      1. Stop and Remove All Docker Containers:

      First, you need to make sure all your containers are stopped and removed. Run these commands one by one:

      docker stop $(docker ps -aq)
      docker rm $(docker ps -aq)

      2. Remove Docker Images:

      Next, clean up any Docker images. Use:

      docker rmi $(docker images -q)

      3. Remove Docker Volumes:

      Don’t forget about the volumes! Run this command:

      docker volume rm $(docker volume ls -q)

      4. Uninstall Docker:

      Now, you can uninstall Docker itself. Just run:

      sudo apt-get purge docker-ce docker-ce-cli containerd.io

      5. Clean Up Remaining Files:

      Finally, let’s get rid of any lingering files:

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

      6. Remove Docker’s GPG Key and Repository:

      If you want a super clean uninstall, remove the GPG key and repository (if you added it):

      sudo rm /etc/apt/trusted.gpg.d/docker.gpg
      sudo rm /etc/apt/sources.list.d/docker.list

      Common Issues to Watch Out For:

      • If you get an error saying something can’t be removed, check if any containers or images are still active.
      • Make sure you’re running these commands with the right permissions (using `sudo` when necessary).
      • Double-check the commands to avoid accidentally deleting something you actually want to keep!

      And that’s it! You should have a clean slate without any Docker remnants on your system. If you have any questions or run into issues, just ask!

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    2. anonymous user
      2024-09-23T17:32:27+05:30Added an answer on September 23, 2024 at 5:32 pm

      To completely remove Docker from your Ubuntu system, you can follow these straightforward steps. First, if you have Docker Desktop installed, you can stop and uninstall Docker by running the command sudo systemctl stop docker and then sudo apt-get remove --purge docker-ce docker-ce-cli containerd.io. This command will remove the Docker packages from your system. After that, use sudo rm -rf /var/lib/docker to remove all Docker images, containers, and volumes from your system, ensuring you don’t have any lingering data left behind. Additionally, you can remove Docker’s configuration files with sudo rm -rf /etc/docker and sudo rm -rf /var/run/docker.sock.

      It’s also a good idea to check for leftover Docker-related dependencies that might still be on your system, which you can do with sudo apt-get autoremove. This command cleans up unused packages. Lastly, you may want to search for any remaining Docker files in /usr/local/bin or other system directories. If you want to ensure that everything is cleaned up, you can use dpkg -l | grep docker to list any Docker-related packages still present. Deleting these remnants will secure a clean uninstallation. Avoid using commands without understanding their implications, and always ensure that you have backups if you need to keep certain configurations or files before proceeding.

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