Re: Zimbra 6 to 8 upgrade path.

[David Emmerich <dpemmerich@eiu.edu>]

That's pretty much what we're doing here.  ZCS 7.2.1 upgrade is tomorrow for us....

----- "Nathan" <lagern@lafayette.edu> wrote:

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> Hello Zimbra-hied-admins.
> 
> I'm in the process of trying to plan out a zimbra 6.0.10 to zimbra 8
> upgrade. I realize that updating directly to 8 from 6 is not
> supported, which is only half of my problem.
> 
> I have two hurdles to overcome, one being supported OS, the next
> being
> the zimbra version.
> 
> 
> I wanted to run an idea i've had regarding a possible upgrade path
> past some other zimbra experts.
> 
> Here's the state we're currently in:
> 
> Zimbra 6.0.10 multi-server install, spanning 9 blades. All of which
> are due for renewal.
> Running on RHEL5.
> 
> Zimbra 8 does not list rhel5 as a supported OS.
> 
> Because we're planning on replacing our blades with the same upgrade,
> I thought i might try to work an OS upgrade, migration to new
> hardware, and a zimbra upgrade all into 1.
> 
> My plan follows:
> 
> Build new machines to host zimbra. On RHEL6. Virtualize as much as
> possible. We'd like to move to a 100% virtualized zimbra environment.
> Which is a point i'd like others to weigh in on as well. What sort of
> success have others had virtualizing all components of Zimbra?
> 
> Install Zimbra 6.0.10 on the new systems, and join them to our
> existing multi-server install. Retire our smtp and proxy blades at
> this point, as the new virtualized proxy and smtp machines should be
> taking over.
> 
> Migrate accounts from our three old store blades, to the new store
> VM's using zimbra's built-in migration functions.
> 
> Retire the old store blades as the new virtual store servers are
> handling all of the load.
> 
> All that's left to deal with at this point are the ldap servers. We
> have two zimbra ldap blades, i'll need to replicate ldap, and then
> promote one of the new virtual ldap servers to master i suppose. Then
> retire the old ldap servers.
> 
> At this point, we should have a fully virtual zimbra 6.0.10
> multi-server install, with all of our users on the new systems. At
> this point, i'd step through the zimbra upgrade process. Upgrade
> 6.0.10 to 7.2.x, and then from 7.2.x to 8.x.
> 
> Does this sound like a sane upgrade path? Is there something simpler
> i'm overlooking?
> 
> Thanks!
> - -- 
> - -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> Nathan Lager, RHCSA, RHCE (#110-011-426)
> System Administrator
> 11 Pardee Hall
> Lafayette College, Easton, PA 18042
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