Hey gang, We're getting ready to deploy our first cluster, and while deciding on the node layout, we ran into an interesting question.
The cluster will be behind a firewall, and a few clients will be on the outside. We'd like to minimize the number of external IPs we use, and provide a single IP address with forwarded ports for each node (using iptables). We've used this method before with simpler "client -> server" protocols, but because of Hadoop's "client -> namenode -> client -> datanode" protocol, I'm assuming this will not work by default. Is it possible to configure the namenode to send clients a different external IP/port for the datanodes than the one it uses when it communicates directly? Thanks a lot! Stu Hood Webmail.us "You manage your business. We'll manage your email."®
