Trouble accessing Kubernetes endpoints
I'm sorry, the Spark example was broken, in multiple ways.
The issue:https://github.com/kubernetes/kubernetes/issues/17463
It now works, as of 2/25/2016, and is passing our continuous testing, at least at HEAD (and the next Kubernetes 1.2 release).
Note that DNS is required, though it is set up by default in a number of cloud provider implementations, including GCE and GKE.