Preamble
Wikimedia CH has a wiki for the members, here:
Actually it runs a stable patched version MediaWiki version 1.31.10 that is the latest version supported by Debian GNU/Linux buster 10 (current stable).
Anyway, MediaWiki 1.35 is the latest stable version supported by the Debian GNU/Linux buster-backports:
https://packages.debian.org/buster-backports/mediawiki
So we can easily plan an upgrade simply adopting the new official package.
Some of the features that will be introduced with MediaWiki 1.35:
- VisualEditor
- advanced templates
Upgrade Plan
The upgrade should be easy because Wikimedia CH had very few extensions.
This is the upgrade plan:
- 2 h backup everything twice and create a testing environment
- evaluate upgrade of the legacy Extension:LiquidThread
- 2 h database upgrade (testing)
- announce read-only window for production
- 1 h upgrade (production)
- 1 h last-minute fixes
- champagne!