[Beowulf] automated ssh & rsh

[Joe Landman]

Hi Sandeep:

On Wed, 2004-06-23 at 12:52, sandeep krishnan wrote:
> Hi,
> 
> I am having a problem with the cluster  I set up using
> Linux Redhat 8.0 for Fluent 6.1.
> 
> I am sharing the /home of the master on all the slave
> nodes because of which I am not able to set up the
> automated ssh and rsh (ie login without password)
> between the nodes. 

Ok, so you have /home mounted on all the compute nodes.  And you want to
be able to log in to any compute node from any other compute node or
head node.  Is this correct?

If so, then all machines share /home/username/.ssh/

You would have to run ssh-keygen

	ssh-keygen -t dsa

Then in the ~/.ssh directory

	cat id_dsa.pb >> authorized_keys

You might need to change some things in /etc/ssh/sshd_config to enable
this to work.

Alternatively, you could enable .shost/.rhost processing in the
/etc/ssh/sshd_config, and create the appropriate files.  This is quite a
bit less secure, though sharing a home directory is also not terribly
secure in some circumstances.   

> 
> Can somebody help me with this
> 
> Thanks
> Sandeep Krishnan
> Graduate Student 
> Oklahoma State University.
> 
> =====
> Sandeep Krishnan 
> Graduate Student 
> Oklahoma State University
> 
> 
> 		
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-- 
Joseph Landman, Ph.D
Scalable Informatics LLC,
email: landman at scalableinformatics.com
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