I used to have a fille with every cli command and notes on how each thing was set up. When I had to reinstall it from scratch it took all day going through lots of manual steps and remembering how it should all go.

Recently I converted the whole thing to Ansible. Now I could rebuild my entire system from a fresh install with one command that completes in minutes. If I ever break anything, it will reset everything to its intended state and leave it alone otherwise. And it’s pretty easy to learn and start using.