[Beowulf] Question about root login(s)

[Tim Moore]

Hello All -

I just upgraded  the OS on my cluster and to satisfy security, 
implemented ssh.  The old cluster used rsh and rlogin.  I developed some 
nice scripts that allow me to do an emergency shutdown, reboot and other 
misc node maintenance with the execution of one command.  SSH 
configuration for a user is trivial because /home is distributed 
throughout the cluster.  I would like to still use my scripts (with some 
mods) to control the cluster but do not quite understand how to login as 
root (without a password) throughout the compute nodes via ssh because 
/root is present on each system.

Thanks!
Tim

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