As part of migration for T326373 I've been restarting/migrating/inspecting all Trove-based db servers. I see that the db server in the 'checkuser-beta-wiki' project named 'mariadb-main' is somewhat broken; that might be a result of the migration process but I suspect it was broken all along.
Any data that was on that host is still preserved, so I can work on reviving the host. Before I do so, it would be good to know whether or not that server and data is of any use or if I should just delete it.