Sorry for the lack of updates - the site is down because the backend server was sent to reboot but it has not completed its shutdown. This is usually because a service is hanging, which is an ordinary problem. The complication is that it did successfully shut down SSH immediately, so I cannot remote in to fix it.
I submitted a ticket for IPMI access but I submitted it to the wrong department. I just re-submitted and am waiting.
This is the last bout of maintenance on the server I need and then I don't have to poke it anymore. The operating system is Debian 11, which is EOL in May 2026, so updating it was necessary.