What is your weirdest self-hosting problem you've had to solve? For me: Mouse inside the server.

The mouse did not survive interrogation.

Also mouse not pictured.

I used to have a Ryzen 2700X based system as a server. At the time (no clue if it’s still an issue), there was a bug in the interaction between early Ryzen chips and Linux that caused the OS to lock up intermittently. I used a ATmega32u4 board to connect to the reset switch on the PC and as a USB device with a systemd unit that sends a ping to the board every 30 seconds. If the board doesn’t see a ping for a minute, it reboots the PC. It was janky as hell, but it worked for 2+ years!

so you reinvented watchdog?

yes, it’s a zip-tie-and-duck-tape watchdog that cost me $5

most BIOSes have it as an option though