Is there a document describing the architecture of a running system? I didn't get from reading the documentation whether I'm spawning processes, containers, or affecting full servers. What comprises a cluster? Can I choose to dedicate a host to run a db, and at the same time run serveral mini-processes without launching every one in a container?

The front that flynn exposes is pleasently simple, but I also want to know what implies every command and how it affect the running environment.