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From: wjw@eba.eb.ele.tue.nl (Willem Jan Withagen)
Newsgroups: comp.sys.apollo
Subject: Re: HELP separate registry data bases on same ethernet!
Keywords: rgyd, glbd, llbd, ncs, confused
Message-ID: <604@eba.eb.ele.tue.nl>
Date: 6 Sep 90 09:18:27 GMT
References: <2490@naucse.cse.nau.edu>
Sender: news@eba.eb.ele.tue.nl (The News system)
Reply-To: wjw@eb.ele.tue.nl
Organization: Eindhoven University of Technology, The Netherlands
Lines: 53


In article <2490@naucse.cse.nau.edu jdc@naucse.cse.nau.edu (John Campbell) writes:
    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".
    
    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.
    
    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.
    

Well it's like you say, the answer is in the NCS manual, somewhere around 
chapter 5 and the description of the files in chapter 7.
But what it boils down to is creating the file
-	/etc/ncs/glb_site.txt which tells very one of your stations where it
				can find it glbd. (And hence your rgyd)
-	/etc/ncs/glb_obj.txt  which specified the unique uid for the glb
				service to be used.
	    ( /etc/ncs/uuid_gen      /etc/ncs/glb_obj.txt would do the job )
-	The next step is to distribute these two items to all the 
	stations you want to 'control'

From now on you can run all of your NCS services local.

Succes,
	Willem Jan
Eindhoven University of Technology   DomainName:  wjw@eb.ele.tue.nl    
Digital Systems Group, Room EH 10.10 BITNET: ELEBWJ@HEITUE5.BITNET
P.O. 513                             Tel: +31-40-473401
5600 MB Eindhoven                    The Netherlands