Topic on Manual talk:Running MediaWiki on Debian or Ubuntu

Well, this is a silly question (sorry) but what happens if I make an upgrade from one Ubuntu LTS to another (in my case 18.04 to 20.04) plus a PHP upgrade?

I made a backup of my database and the MediaWiki folder and secured it, but how will the software react to this changes? Do I need a reconfiguration after that? Does I get an error due to the changed OS/PHP version? Or will nothing at all happen?

It is a very silly question, but hey, better asking it now than after having a problem with the upgrade.

You should review Compatibility#Server software to make sure the versions you're upgrading to are compatible with your targeted MediaWiki version. In general I recommend upgrading your operating system (and PHP and MySQL, etc.) and then updating MediaWiki if necessary.

In general you shouldn't need to change any MediaWiki configuration. I would recommend ensuring any caches like memcached or redis are reset though.

The Ubuntu and PHP upgrade (from 7.2.x to 7.3.x) is more or less the preparation for an upcoming MediaWiki upgrade, so this was the plan all along. Thanks for your help.