Thanks to all who responded. This information will be most helpful.
Here's my original question:
> At 08:36 PM 7/20/99 -0400, you wrote:
>
We will soon be getting a new DS20 to replace our old AS2100. I'm
looking for documentation which would serve as a guideline for
migrating the contents of our current production system (4.0B) on the
2100 to the new DS20 (4.0E) box. My main concern is how to transfer the
C2 security database and various system files to the new machine. I
realize there will be some specific things to tweak on the new system
due to different hardware etc. but would like to know if there is a
document which provides a general guideline on the steps which should
be followed. I just want to make sure I've got all the critical
steps/tweaks covered.
***********************************************************************
Here's the responses I got:
--- alan_at_nabeth.cxo.dec.com wrote:
> From: alan_at_nabeth.cxo.dec.com
> To: Chris Los <sirhc08_at_yahoo.com>
> Subject: Re: Migrate production system from AS2100(4.0B) to
> DS20(4.0E)
> Date: Wed, 21 Jul 99 11:37:53 -0600
>
>
> One way to do the migration, is to simply upgrade the
> existing system to V4.0E or V4.0F using the instructions
> in the Installation Guide that came with the higher version.
> You'll probably need V4.0D as an intermediate upgrade. Once
> the system is upgraded in place, you can migrate the disk(s)
> to the new system.
>
--- Ashley Frost <Ashley.W.Frost_at_williams.edu> wrote:
> Date: Wed, 21 Jul 1999 10:08:31 -0400 (EDT)
> From: Ashley Frost <Ashley.W.Frost_at_williams.edu>
> Subject: Re: Migrate production system from AS2100(4.0B) to
> DS20(4.0E)
> To: Chris Los <sirhc08_at_yahoo.com>
>
>
> Chris,
>
> While I'm not attempting to address every issue you might encounter in a
> system migration, I can share some information about migrating the C2
> databases.
>
> When doing these steps, keep a couple root shell windows available in
> cause you need to back out. If you make a mistake, you will not be able
> to authenticate new sessions.
>
> 1. Make your home directory structure on the DS20 the same as on your 2100.
> 2. Synchronize your /etc/passwd and /etc/group files to match the 2100.
> 3. Save backup copies of /tcb/files/auth.db and /var/tcb/files/auth.db on
> the DS20, in case you have to regress these steps.
> 4. Copy the two auth.db files from the 2100 into their corresponding
> locations on your DS20.
> 5. Compare the files in /etc/auth/system to see if you have other
> system-wide authentication tweaks you need to address
>
> For further reading, see 'man prpasswd' and 'man authcap' as a
> starting
> point.
>
> -Ashley Frost
> -Networks & Systems Administrator
> -Williams College
--- Keith Piepho <kap_at_uakron.edu> wrote:
> Date: Wed, 21 Jul 1999 09:46:26 -0400
> To: Chris Los <sirhc08_at_yahoo.com>
> From: Keith Piepho <kap_at_uakron.edu>
> Subject: Re: Migrate production system from AS2100(4.0B) to
> DS20(4.0E)
>
>
> We recently were delivered a DS20 for a similar purpose, and are in the
> process of such a migration. Testing the migration of the user database is
> one of our next tasks, but in general I would recommend (and have seen
> others recommend) either:
a) dumping the auth database into the individual ascii files,
> moving those over, reimporting into database format (dump/import with
convauth)
> -or-
> b) if you are going to transfer the database files over directly, it is
generally recommended to upgrade the 2100 to the same version as the DS20, to
avoid the possibility of problems with changes to the internal file formats
across versions.
>
> On a related note, while we also were expecting our DS20 to come installed
> with 4.0E, it arrived with 4.0F. The Release Notes for 4.0F indicate
> the addition of "Hardware Support" for the DS20, so I don't know if there is
a
> problem with 4.0E on the DS20. Just thought you might like to know, for
> planning purposes.
>
> I'll be interested in any other suggestions you receive, since we're in a
> similar position.
>
> Best of luck,
>
> -- - keith
>
>
--- "Davis, Alan" <Davis_at_Tessco.Com> wrote:
> From: "Davis, Alan" <Davis_at_Tessco.Com>
> To: 'Chris Los' <sirhc08_at_yahoo.com>
> Subject: RE: Migrate production system from AS2100(4.0B) to
> DS20(4.0E)
> Date: Wed, 21 Jul 1999 09:45:21 -0400
>
> Chris,
>
> There isn't a system to system migration guide, however, there are some
> largely undocumented tools that will help.
>
> Take a look at the man pages for genufi and related tools. These programs
> make up the "Re-installation toolkit". This was a feature that was developed
> and incorporated into the OS but never added to the manuals.
>
> The RitKit will build a list of files that should be saved for replacement
> on the new system. It was originally intended to allow an admin to
> save the customized files for re-use after a full OS re-install when an
> installupdate wasn't going to be done.
>
> Alan Davis
--- "Dr. Tom Blinn, 603-884-0646" <tpb_at_doctor.zk3.dec.com> wrote:
> To: Chris Los <sirhc08_at_yahoo.com>
> Subject: Re: Migrate production system from AS2100(4.0B) to
> DS20(4.0E)
> Date: Wed, 21 Jul 99 09:28:52 -0400
> From: "Dr. Tom Blinn, 603-884-0646" <tpb_at_doctor.zk3.dec.com>
>
>
> If I were trying to do this task, I would approach it this way: Make a full
> copy of the system disk from the old system, with EVERYTHING that you expect
> to move to the new system (but not necessarily user databases, which
> I would expect to have living on their own disks and file system hiearchy).
> Then on the new disk (perhaps the system disk for the DS20), installupdate
> first to V4.0D, then to V4.0E or V4.0F. I'd probably go to V4.0F, it will
> still be supported after V4.0E support has ended. If you are using AdvFS, be
> sure to run V4.0B's AdvFS verify utility on all user file systems to make
> sure they are in good shape BEFORE you try to move them to the new system.
> Once you've updated your old system environment to V4.0E (or V4.0F) and have
> everything up and working correctly on your old machine, THEN move things
over > to the new box, boot the /genvmunix kernel, build a new target kernel,
and so
> forth. It will be MUCH easier and less likely to go wrong than trying to
find
> everything you need to move from the old system disk to the new one on a >
totally new box.
> Tom
>
> Dr. Thomas P. Blinn + UNIX Software Group + Compaq Computer
> Corporation 110 Spit Brook Road, MS ZKO3-2/W17 Nashua, New Hampshire
> 03062-2698 Technology Partnership Engineering Phone: (603)884-0646
> Internet: tpb_at_zk3.dec.com Digital's Easynet: alpha::tpb
> ACM Member: tpblinn_at_acm.org PC_at_Home: tom_at_felines.mv.net
>
--- Michael Bucholtz <mbucholt_at_ceiss.org> wrote:
> From: Michael Bucholtz <mbucholt_at_ceiss.org>
> To: "'Chris Los'" <sirhc08_at_yahoo.com>
> Subject: RE: Migrate production system from AS2100(4.0B) to
> DS20(4.0E)
> Date: Tue, 20 Jul 1999 17:58:47 -0700
>
> Hiya..
>
> We just migrated from an alpha 2000 system to a DS20 (4.0e)
>
> Most of the things you need to transfer are pretty straight forward:
>
> cron tabs
> user directories/files
> printer definitions (pcap, etc)
> hosts file
> group file
> etc etc..
> anything that you use now, that you may need later (like
> /usr/local/bin,
> /usr/local/lib)..
>
> As for the password file, we had C2 on the old machine and the new
> machine - I coudlnt find any documentation anywhere about how to transfer
over
> the passwords - what I ended up doing was changing over to BASE on the
> old and new system, copy the password file over, ran convuser and then
> turing back on C2 on the new system..
>
> Somewhere along those lines something screwed up and I had to change
> passwords for all the users (oh what fun.. ).. (i think I ended up
> copying over a backup of the password file which *wasnt* the basic passwd
> file ..
>
> good luck
>
>
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Received on Wed Jul 28 1999 - 16:08:34 NZST