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From "Peeyush Bishnoi" <peeyu...@yahoo-inc.com>
Subject RE: NFS mounted home, host RSA keys, localhost, strict sshds andbad mojo.
Date Sat, 22 Mar 2008 11:27:02 GMT
Hi ,

Yeah!!! you can tell hadoop to use the IP or hostname instead of localhost by specifying in
hadoop configuration file i.e hadoop-site.xml . The parameters for hadoop-site.xml you can
copy from hadoop-default.xml .

For NameNode:


For JobTracker:


For ssh related problem follow some nice online tutorial for enabling the passwordless connection
across machines using same key. If you still not able to solve the problem . Let me know .

Thanks ,


-----Original Message-----
From: Andreas Kostyrka [mailto:andreas@kostyrka.org]
Sent: Sat 3/22/2008 2:01 AM
To: core-user@hadoop.apache.org
Subject: Re: NFS mounted home, host RSA keys, localhost, strict sshds andbad mojo.
Add a .ssh/config file and make it stop doing the hostkey check for


Am Freitag, den 21.03.2008, 12:25 -0400 schrieb Colin Freas:
> 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

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