[Beowulf] password-less "rsh"

Brian R Smith brian at cypher.acomp.usf.edu
Sat Jul 30 15:26:51 EDT 2005


On Fedora, the easiest way to do this (if you don't use/need kerberos)
is by 

rm -f /etc/profile.d/krb*

The only problem is that kerberos rpm updates will put the files back on
occasion.  As well, the kerberos rsh will automatically switch
to /usr/bin/rsh if the remote host does not have kerberos extensions.
It has done this by default for as long as I can remember.

BTW, does anyone even use kerberos rsh?  I never hear it mentioned by
anyone.

-Brian

On Sat, 2005-07-30 at 09:06 +0100, John Hearns wrote:
> On Sat, 2005-07-30 at 00:34 +0100, Pete Nevill wrote:
> > I am trying to put a cluster together but seem to have fallen at the
> > first hurdle. A key part of the cluster set up is for the master node to
> > be able to communicate and run processes on the slave nodes. One way I
> > have seen to do this is to use the "rsh" command. Unfortunately I am
> > unable to get this to work in a "password-less" way, actually cannot
> > connect one node to the other using "rsh" without getting a connection
> > refused or unable to authenticate 
> > "Trying krb4 rlogin...
> > krb_sendauth failed: You have no tickets cached"
> > 
> Peter, as Martin Siegert says you seem to be using the kerberised
> version of rsh, which I think is the default in Fedora.
> 
> Checking on my Fedora 3 laptop, yes:  /usr/kerberos/bin/rsh
> You want to use /usr/bin/rsh 
> Take the /usr/kerberos/bin out of your PATH
> 
> 
> 
> 
> 
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