David Partingtin wrote:

Bob,
Yes I read your AMGH Blog, but I simply don't understand the concept of how
to set it up yet. I have three failover groups supporting 500 DTU's with
servers in three different buildings. 270 of the DTU's are on dedicated
interconnects with two entire Class C VLANS. The rest of the DTU's are bootp
relayed to any servers located in any of the three failover groups located
in the three buildings with Sun Ray Servers. All I want to do with AMGH is
to allow Smart Card CAM Mode session mobility to any of the 500 Sun Rays
located in 8 different buildings. I will go back and review your blog, and
figure it out myself; I thank you for your time. I now realize I incorrectly
used the forum for engineering help, which is not the proper method for
support.

Dave,

I'm perfectly happy to provide what support I can on a time-permitting
basis in this forum.  One advantage of a forum is that others can
read the issues and solutions and perhaps apply them to their own
situation.

But I do request that you do your homework first and make your best
effort before requesting help.  Once that's done, feel free to ask
questions.

As you'll see from my blog, AMGH was not initially designed to work
with our current CAM offering.  I have however provided an unsupported
PAM client that you can add into your CAM sessions to invoke the
AMGH service.

After that the simplest approach would be to use the reference script,
and create a back_end_db that lists all your smartcard CUIDs and
the FOGs they "belong to" (usually the one which can provide the best
service to the location the user most commonly uses).  Put the file
into an NFS shared location, mount it everywhere, and modify the
reference script to point to it.  Add the AMGH PAM client into your
CAM sessions.  Then just run utamghadm to configure the reference
script.

Refinements worth considering are:

- Write your own script similar to the reference script, but that is
more robust/hardened.  The input parsing in the reference script
is really stupid and simple, because the goal was to provide
reference code to learn about AMGH, and input parsing is
irrelevant to that goal so we didn't want to clutter the example.

- Use something with better RAS characteristics or that is better
integrated with your site's data sources than an NFS share, such
as LDAP.  Modify the reference script to use ldapsearch commands
or similar.

-Bob

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