> My Ubuntu servers have been in an undefined state since canonical botched a regular upgrade to 26.04 LTS due to the ongoing DDOS. Their status page says everything works. A simple ping tells me nothing works.

So is it the DDOS that's responsible, status page notwithstanding?

Anyway, heard about Timeshift for Ubuntu on here, might be worth taking a look at it: https://github.com/linuxmint/timeshift

Doesn't require a GUI, so it can be used for servers/headless too. Please note that's it's not a backup solution, just an OS snapshot one, albeit with scheduling.