We should upgrade the installation to assure maximum support to latest security patches (some of them were not back-ported) and maximum support for post-2015 features like VisualEditor, the Extension:Thanks and other awesome things that could be appreciated by Wikimedia Italia members.
In short we should take some time to:
- assure a backup
- check if upgrade is feasible on the same server
- upgrade from 1.26.4 to latest LTS 1.35
- eventually adopt the cute Debian mediawiki package maintained by User:Legoktm
- bonus point: track A/B configuration changes of our LocalSettings.php in Wikimedia Gerrit or whatever code hosting the community is discussing now between Phabricator and/or GitLab and/or GitHub and/or a nextCloud directory called wikina-final-version-really-really-final-ok-really-ok-ok-2020.zip asd
Also after the upgrade we could wait some time (few days?) before installing our new extensions, in order to test the fresh upgrade as-is and be sure that everything works without regressions.
(This was imported from here)