Hello there! Here’s the thing: I got some old HDD for my Debian home server, and now that I have plenty of disk space I want to keep a backup of the OS, so that if something accidentally breaks (either SW or HW) I can quickly fix it.
now the question is: which directory should I include and which should I exclude from the backup? I use docker a lot, is there any docker-specific directory that I should back up?
everything. download clonezilla, perform a bare-metal backup and if the worst happens, you can reflash your new disk to exactly how the old one was without skipping a beat.
*most of the time. And test backups to make sure they really work or you have no true backup.
clonezilla tests it as part of its backup process.