This post comes late but for information, we have a cluster in production for the last 3 years with Kerberos enabled (before multi-homing support in Hadoop). We defined one logical network on top of 2 physical networks. We kept the public network (2x1G accessible through the company) to configure all the nodes and route all the internal traffic (based on IP addresses or subnet mask if possible) to the interface of the private network (2x10G internal trafic accross 3 racks) ... View more