For the migration of maps to Bookworm (T381565) we had used six former Ganeti nodes as test servers.
We'll keep maps-test2001 around as a separate staging system (single PG master, no replicas, a separate role::maps::staging will be used (https://gerrit.wikimedia.org/r/c/operations/puppet/+/1201077)) to eventually point the wikikube staging endpoint to it. This will allow us to test changes like https://gerrit.wikimedia.org/r/c/mediawiki/services/kartotherian/+/1201020 or https://phabricator.wikimedia.org/T407491 more systematically w/o risk to the main production setup.
It's an old Ganeti node, but it should be good for the remainder of the FY and we will refresh it with new hardware in the next one.