Cloudler could be another way to run commands on one or more than one remote servers. It saves on time in this manner. It finds application in Web Crawlers, or things like this that require some additional time and effort.
It works to upload the entire current project and run a particular command in the project's directory.
It requires SSH to log on to the server and upload the project in question. This way, it could install any specific gems and even run some commands in the project's directory.
Cloudler is a ruby tool that could be downloaded from the internet for use, but the application comes at a price. Some sites offer a free trial for 30 days for Cloudler 0.2.0.