You’ve already seen how to Run A Tor Relay On Ubuntu Trusty. It’s a task that, while straightforward, still requires you to follow a ton of steps to have everything up and running correctly. If you only have one relay to set up, executing things by hand is fine. The moment you have more than one, it becomes too tedious. I’ve looked at configuration management tools like Chef and Puppet in the past, but their learning curve was pretty steep and I just didn’t have the patience.