i'm working to set up a cluster across several machines where users' home dirs are on an nfs mount.
i setup key authentication for the hadoop user, install all the software on one node, get everything running, and move on to another node. once there, however, my sshd complains because the host key associated with "localhost" is a different machine, and it refuses the connection. i'm just testing here, so I can remove the localhost entry from .ssh/known_hosts, but, is this going to be an issue going forward if the home dirs are shared like this? can i get hadoop to use the ip or the hostname instead of localhost? i scanned the config files, but it didn't jump out at me. -colin
