What's the biggest mistake you've made on a server?
I think mine would have to be what happened to me today. I accidentally deleted /etc and didn't have a recent backup of it. Fortunately, I did have a backup of my nginx config and a very old backup from a previous install.
Thankfully I've never done rm -rf / except intentionally on a machine I was just messing around with. Mistakes happen to the best of us, so what's the biggest mistake YOU've made?
Unless otherwise specified, opinions posted are my own, not those of any person or company I work for