[horde] Fwd: Need help to merge 4 seperate horde installs

Bill Graham grahamcw at hurleybulldogs.com
Tue Nov 21 07:15:32 PST 2006

Another point -
If you have duplicate names across the servers -
rectify these name copnflicts before trying to merge anything.


Bill Graham
Systems Administrator
Hurley Public Schools
Hurley,SD 57036
grahamcw at hurleybulldogs.com

Quoting "Daniel A. Ramaley" <daniel.ramaley at DRAKE.EDU>:

> If i had to do this, first i'd verify that all 4 servers are running the
> same versions of the same Horde components. Then i'd decide which of
> the 4 installations will be preserved (the master). Make backups of the
> database on that machine, and test that the backups can be reloaded.
> Then pick one of the other machines to be merged with the master and
> dump its database tables. Examine the dump file and make sure tables
> will not be dropped when it is reloaded, then try loading it on the
> master. Shut down the machine whose database was copied over, and tell
> people who formerly used it to use the master machine instead.
> I don't know if this will work or not, but it is how i would start
> thinking about the problem. One obvious limitation is that if people
> have preferences on multiple Horde installations, only 1 set of
> preferences will survive. If there are not many such people, it may be
> easiest just to tell them that they might lose some data, and if they
> are concerned about address books or other really important data that
> they export a copy for themselves and import it after the migration.
> But if most of the users have used more than one Horde server, then
> you'll need to come up with a more elaborate plan to merge the
> databases. Whatever you do, make sure you have verified backups before
> beginning.
> Someone with more knowledge of Horde internals, feel free to tell me how
> my plan would blow up and cause data loss.
> On Tuesday 21 November 2006 05:41, netty 2006 wrote:
>> Hello,
>> Can anyone help me with this?
>> Regards,
>> Netty
>> ---------- Forwarded message ----------
>> From: netty 2006 <netty2006 at gmail.com>
>> Date: Nov 19, 2006 7:03 PM
>> Subject: Need help to merge 4 seperate horde installs
>> To: horde at lists.horde.org
>> Hello,
>> We have 4 seperate horde 3.1.1 installs on seperate servers.
>> Now we wish to run a seperate horde server that serve users of all 4
>> installs. Here i need help on merging user preferences, address
>> books, memos, etc for all 4 installs into one.
>> I tried to lookup but couldnt find an adequate anwer anywhere.
>> Can someone guide me how should i go for this merge?
>> Another problem i have is duplicates in a few installs.
>> Like someuser at domain.com may exist in 2 installs, so it may create an
>> issue in merging them.
>> As i see there isnt a straight way, but even if someone can guide, it
>> will help a lot.
>> Even if it needs scripting or data transformation of some sort.
>> Regards,
>> Netty
> --
> ------------------------------------------------------------------------
> Dan Ramaley                            Dial Center 118, Drake University
> Network Programmer/Analyst             2407 Carpenter Ave
> +1 515 271-4540                        Des Moines IA 50311 USA
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