For simple ad-hoc farms of diverse infrastructure, Docker is a simple deployment platform.
Here are a couple of related notes about some work on Federated Wiki Hosting.
On this page we discuss the development of a "hyperlocal server" for the Federation. We imagine a number of bespoke Hyperlocal Servers coded in different languages. The one we are concentrating here is the LiveNode Server or more specifically the Block Server.
Grid Computing
Videos about the topic.
Preliminary Work 
on Object Storage