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.
If you’ve seen the Tor Challenge, you may be wondering how hard it really is to run a relay on one of your spare machines… It’s not hard at all! You can probably get up and running in less than half an hour. The following instructions detail how to set up a middle relay on a fresh Ubuntu 14.04 (Trusty), but should apply to most Ubuntu configurations. Also, the official documentation covers every topic you can possibly think of.