[Beowulf] passwordless "rsh" login

Sean Dilda agrajag at dragaera.net
Thu Jul 8 09:55:22 EDT 2004


On Thu, 2004-07-08 at 03:04, Andrew M.A. Cater wrote:
> On Wed, Jul 07, 2004 at 01:20:43PM -0700, sandeep krishnan wrote:
> > Hi,
> >  
> > I have a cluster set up with redhat 8.0 in which Fluent is being used. The /home of the master is being shared by all the nodes on the cluster. For running parallel applications with Fluent it requires passwordless "rsh" login to all the nodes. As a local user (non root) I am able to login from the master to all the nodes with rsh without password. But from one node to another it keeps asking for the password. 
> >  
> _Don't_ use rsh :) Use ssh with key exchange and passwordless login.
> There is a compatibility hack to make ssh behave exactly like rsh -
> you might even get away just with linking ssh -> rsh :)

I also find that using ssh's hostbased authentication is nice so that I
don't have to worry about generating keys for everyone.

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