To configure the passwordless access from one zone to another is a little complicated.
You can use the synclist to append the ssh key of server zone to the compute zone through the 'APPEND' feature in the synclist.
Search 'APPEND' in the http://xcat-docs.readthedocs.org/en/2.11/guides/admin-guides/manage_clusters/common/deployment/syncfile/syncfile_synclist_file.html?highlight=synclist
Thanks
Best Regards
----------------------------------------------------------------------
Wang Xiaopeng (王晓朋)
IBM China System Technology Laboratory
Tel: 86-10-82453455
Email: [email protected]
Address: 28,ZhongGuanCun Software Park,No.8 Dong Bei Wang West Road, Haidian District Beijing P.R.China 100193
----- Original message -----
From: Thomas Orgis <[email protected]>
To: xCAT Users Mailing list <[email protected]>
Cc:
Subject: Re: [xcat-user] Understanding xcat zones
Date: Wed, Mar 23, 2016 1:09 AM
Am Fri, 18 Mar 2016 11:02:28 +0000
schrieb "Xiao Peng Wang" <[email protected]>:
> Zone is used to separate the computes instead of forbidding compute node to access MN.
May I intrude into this, expanding the picture of what zones (should)
achieve? I also set up zones for compute nodes and server nodes
(separate from management node). The servers are not supposed to have
ssh between each other, the compute nodes shall communicate freely
among themselves.
So fine, so far it works. But: I also would like the server nodes to be
able to SSH into the compute nodes. Simply put, I want the
authorized_keys file on the compute nodes contain the key for root on
the management node and the key from the server zone.
Can this be achieved with the zone setup? Is there a file where one
could pre-fill authorized_keys? My assumption is that one would need to
hack around, with the best solution being an attribute in the zones
table that says which zones, in addition to the management/service
node(s), are allowed passwordless access. Of course that would need a
bit more extensive hacking (and change in the database).
Alrighty then,
Thomas
--
Dr. Thomas Orgis
Universität Hamburg
RRZ / Zentrale Dienste / HPC
Schlüterstr. 70
20146 Hamburg
Tel.: 040/42838 8826
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