How to Uninstall MariaDB on Ubuntu

How to Uninstall MariaDB on Ubuntu

MariaDB is a popular open-source relational database management system, a fork of MySQL. While it offers many features and benefits, there may be instances where you need to uninstall it from your Ubuntu server. This could be due to a variety of reasons, such as migrating to another database system or troubleshooting issues.

In this guide, we will walk you through the steps to uninstall MariaDB from your Ubuntu system.

Let’s get started.

Step 1: Backup Your Data

Before you uninstall MariaDB, it’s essential to backup any databases or data you wish to retain. Use the mysqldump command to create backups of your databases.

mysqldump -u [username] -p[password] [database_name] > backup.sql

Replace [username], [password], and [database_name] with your MariaDB credentials and the name of the database you want to backup.

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Step 2: Stop the MariaDB Service

Before uninstalling, ensure that the MariaDB service is stopped.

sudo systemctl stop mariadb

Step 3: Remove MariaDB Packages

Use the apt package manager to remove MariaDB and its associated packages.

sudo apt-get purge mariadb-server mariadb-client mariadb-common
sudo apt-get autoremove
sudo apt-get autoclean

Step 4: Remove MariaDB User and Group

To ensure a complete uninstallation, remove the MariaDB user and group.

sudo userdel -r mysql
sudo groupdel mysql

Step 5: Remove MariaDB Configuration and Database Files

Delete the MariaDB configuration and database files.

sudo rm -rf /etc/mysql/
sudo rm -rf /var/lib/mysql/

Commands Mentioned

  • mysqldump – Used to backup MariaDB databases.
  • systemctl – Controls the systemd system and service manager.
  • apt-get – APT package handling utility.
  • userdel – Deletes a user account.
  • groupdel – Deletes a group.
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FAQ

  1. Why would someone want to uninstall MariaDB?

    There are various reasons, including migrating to another database system, troubleshooting issues, or simply freeing up server resources.

  2. Is it safe to remove MariaDB configuration and database files?

    Yes, but only after ensuring you have backed up any essential data, as this action is irreversible.

  3. Can I reinstall MariaDB after uninstalling?

    Yes, you can reinstall MariaDB anytime after uninstalling. Ensure you have the necessary installation files or access to the repository.

  4. What’s the difference between `purge` and `remove` in the apt-get command?

    `remove` uninstalls the package but keeps configuration files, while `purge` uninstalls the package and deletes its configuration files.

  5. Is MariaDB the same as MySQL?

    MariaDB is a fork of MySQL. While they share many similarities, there are differences in features, performance, and licensing.

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Conclusion

Uninstalling MariaDB from your Ubuntu system is a straightforward process, but it’s crucial to take precautions like backing up your data. By following the steps outlined in this guide, you can ensure a complete and clean removal of MariaDB.

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