I've been using puppet for everything for 8 years now. I try to avoid using the pre-built modules so that I know what everything is doing but I do use a few. Th

I've been using puppet for everything for 8 years now. I try to avoid using the pre-built modules so that I know what everything is doing but I do use a few. There's a base config I use everywhere and then some modules that are specific to my workstation and some that are specific to servers. Makes it really easy to bring up a new personal laptop/desktop/server and have a great base setup (passwordless ssh, a tinc overlay VPN, automatic upgrades, root emails that show up in my inbox, etc) as well as making it very easy to bring up new services (e.g., a new website is just a few tweaks and a deploy) or migrate between machines. Couldn't recommend it more. I started with puppet which seemed most robust at the time but I'm sure one of the others would do the same. Having all your configs in a single git repository and easy to deploy from a central point is great. And once you have that doing things like centrally managing keys (great for ssh and tinc) becomes really easy.