Upgrading your database version in WHM is an important task to improve performance, enhance security, and ensure compatibility with modern web applications.
This guide walks you through the correct and safe way to upgrade MySQL or MariaDB using WHM
Although in-place upgrades are generally safe, you should always perform a full database backup before you begin the upgrade process.
Please note that downgrades to previous versions are unsupported. After you upgrade your system to a newer version, it may be impossible to switch back.
Also note that since MariaDB is installed, moving to MySQL 8 is considered a downgrade, and therefore not supported.

Upgrading your database version in WHM is a straightforward process when done correctly. By following proper backup procedures and compatibility checks, you can ensure a smooth and safe upgrade with minimal downtime.