By default, xCAT does not allow ssh from the compute nodes ( passwordless) to the MN. It only sets up passwordless ssh from the MN to the compute nodes.
The attribute sshbetweennodes set to "NOGROUPS" actually is used to not
allow passwordless ssh between the compute nodes.
But the man page is a little vague. I will improve it.
Lissa K. Valletta
8-3/B10
Poughkeepsie, NY 12601
(tie 293) 433-3102
From: Christopher Samuel <sam...@unimelb.edu.au>
To: xcat-user@lists.sourceforge.net,
Date: 01/22/2014 09:53 PM
Subject: Re: [xcat-user] Embedding GPFS 3.5 into xcat diskless boot
images
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
On 23/01/14 06:26, Christian Caruthers wrote:
> In the past, with stateless nodes, I install the rpms during image
> build and set rc.local to run mmsdrrestore on the stateless node to
> sync it with the cluster.
We use statelite and set this in litefile:
"ALL","/var/mmfs/","persistent",,
so their state persists across reboots.
Handy as we don't permit SSH back from compute/login nodes to the
management node as root (sshbetweennodes set to "NOGROUPS").
cheers,
Chris
- --
Christopher Samuel Senior Systems Administrator
VLSCI - Victorian Life Sciences Computation Initiative
Email: sam...@unimelb.edu.au Phone: +61 (0)3 903 55545
http://www.vlsci.org.au/ http://twitter.com/vlsci
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