Re: Bugs with mixed Zimbra 7/Zimbra 8 cluster

[Nathan <lagern@lafayette.edu>]

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We did the same, but did not trade our souls to the Devil.

We went from RHEL5 to 6, and ZCS 6 to 8,  Using 7 as our intermediary.

Ubu12 wont run any variant of 7?  We found 7.2.2 (iirc) to the the
sweet-spot for compatibility.

We upgraded our zcs6 rhel5 machines to zcs7.2.2.  Added in our RHEL6
ZCS 7.2.2 machines, retiring the rhel5 proxy, ldap, and smtp's as we
did.  Then we ended up with our entire new platform in place, with the
old stores still containing all f our accounts.

We then spent a few days migrating accounts via a script to our new
stores. Then decomissioned the old ones.

We then did an in-place upgrade to zcs 8.

We found this to be the least painful and stressful migration path.


On 06/13/2014 04:11 PM, Rich Graves wrote:
>> 1) When I performed my upgrade I just created new boxes that ran
> zimbra 7 migrated all the users to the new boxes and then upgraded
> the new machines to 8.0.4.
> 
> The proposal is to go from RHEL5 to Ubuntu 12. RHEL5 cannot run
> ZCS8 and Ubuntu 12 cannot run ZCS7. So I'm looking at
> account-by-account zmmailboxmove and prolonged coexistence.

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Nathan Lager, RHCSA, RHCE, RHCVA (#110-011-426)
System Administrator
11 Pardee Hall
Lafayette College, Easton, PA 18042
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