Path: utzoo!utgpu!watserv1!watmath!att!occrsh!uokmax!apple!brutus.cs.uiuc.edu!zaphod.mps.ohio-state.edu!ncar!noao!arizona!naucse!jdc
From: jdc@naucse.cse.nau.edu (John Campbell)
Newsgroups: comp.sys.apollo
Subject: HELP separate registry data bases on same ethernet!
Keywords: rgyd, glbd, llbd, ncs, confused
Message-ID: <2490@naucse.cse.nau.edu>
Date: 4 Sep 90 20:05:50 GMT
Organization: Northern Arizona University, Flagstaff AZ
Lines: 53

Ok, we're stupid--or at least ignorant.  I'm trying to bring up 3 machines
(apollo 4500's) in our Engineering department.  Already we have 4 machines
(3 3500's and 1 10000) running in our Chemistry department.  One of the
3500's has a disk and two ethernet boards.  The DN10000 has a disk and
all the 4500's have disks.  It all looks something like this:

       EGR                                             CHM
Res   Ind   Cap                                 Hyd----Nit---Oxy---Car
 |     |     |                                   |
 +-----+-----+-----------------------------------+

Where Hyd (//hydrogen) with two ethernet boards was to be a "gateway".

Now, for reasons that I think I almost agree with, the EGR folks don't
want the CHM folks completely in charge of their registry.  In other
words, the person maintaining the CHM machines is a CHM prof and the
EGR profs aren't happy thinking that their master registry is located
on "his" machines.

So my job is to try to keep the machines on the network together but
isolate certain services from each other.  Especially registry
services.  So far I've just snipped the line connecting the three
and have been bringing up Res, Ind, Cap without worrying about this
larger issue yet.

My experiments to date are not very hopeful.  First it seems that
any RGYD running anywhere on the network causes the global registry
to be used.  Is this right?  In other words, I considered not having
rgyd running on Res, Ind, or Cap and using /com/cpt to keep the
registry data tree's up to date.  I knew I'd have to isolate the net
and then run rgyd for edrgy to work as discussed in the last part of
chapter 4 of Managing BSD System Software.

BUT, that plan doesn't look like it's going to work.  I'm not sure yet,
but I believe if I hook the network back up I'll have a problem with
the fact that rgyd is running on either Car or Hyd.  Also, someone
mentioned I could isolate dds packets from the internet at Hyd using
RTSVC.  Looking at RTSVC, however, doesn't make it clear how to shut
off dds and keep ip packets.

I'm about to wade into "Managing NCS Software" as that seems to give
an overview of some of these issues.  At first glance, however, it isn't
clear how to run separate glbd's or mark services (objects?) for one
net or set of machines and not another.

Any hope?  Any help?  I'm more than a little confused...

Thanks.

-- 
	John Campbell               jdc@naucse.cse.nau.edu
                                    CAMPBELL@NAUVAX.bitnet
	unix?  Sure send me a dozen, all different colors.