The default network plugin (canal) did not work for me (some strange error), switching to Weave fixed the problem. Somehow RKE fails when your ssh-key is added to an ssh-agent, you need to add the "--ssh-agent-auth" flag to RKE to make it work.

The rest worked great and fast (~5 minutes I'd say). I am currently looking into persistent volume solutions, Rook.io looks good but is still beta. Ingress is another thing I have to look into, probably just port forwarding from my router to one of the nodes running the controller.

The nodes are Ubuntu 16.04 with docker installed from the repos.