On Thu, Mar 01, 2007 at 08:28:25AM -0600, Peter Scheie wrote:
> Martin Woolley wrote:
> > On Tuesday 27 February 2007 13:39, Noel wrote:
> >> Tadeu F. Oliveira wrote:
> >>> Hi, Everybody
> >>> does anyone have tried LTSP with some kind of load balance?
> [...]
We have some basic clustering with the following setup:
All thin clients boot from one DHCP/tftp server and get their image from
there.
In their image, they run a startx script from /etc/init.d, where they get a
list of available XDMCP servers in our LAN, which are currently 3 Xeon-SMP
machines. These work as application servers for the thin clients.
The script loops through this list with xdmping and gets these parameters from
each machine:
# xdmping ots-6 -v -t 1
contacting 10.1.0.26...
ots-6: 13 users, load: 0.49, 0.69, 0.50
With some grep, awk, and sort magic the machine with the least load is chosen.
The XWindow system of the client is then started with (e.g.):
/usr/X11R6/bin/X -query ots-6
This works fine for us and it must be easy to integrate it into standard LTSP.
We currently run a non-LTSP solution from a german company Gonicus, where the
above mentioned script originates from. But we are just in the process of
coming back home into LTSP realm with some additional fiddeling to provide our
centralized information about thin clients and application servers from LDAP
for LTSP, maybe by dynamically creating ltsp.conf files. But this is another
topic.
> Martin-
> Just curious: how are you handling user authentication and sharing the /home
> directory
> among your servers, such that it doesn't matter which server a user is
> connected to?
We have all /home dirs on a centralized file server (which is the
DHCP/tftp server), connected to the application servers via Gigabit ethernet.
Authentication is done with LDAP/Kerberos.
HTH
Helmut
--
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Helmut Lichtenberg <[EMAIL PROTECTED]> Tel. +49 (0)5034/871-128
Institut für Tierzucht 31535 Neustadt Germany
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