Problems migrating to new server

[JustinC]

Hi,

I'm trying to migrate my zimbra installation to a new server. I'm currently running 4.5.9 on FC4 and would like to move to some new hardware running CentOS 5 (x86_64).

I've tried following John's power tip for migrating servers but have come across a problem.
http://www.zimbra.com/blog/archives/...er_server.html

When I do the final run of intstall.sh I get errors when ldap starts (account.NO_SUCH_SERVER and account.NO_SUCH_COS). The install also asks me to set the ports. It's as if the configuration is not coming across. Any ideas where I should look?

Justin.

[jholder]

Hi Justin-
Usually with a change in archetectures, you'll need to dump ldap first.

So follow those instructions in the blog post, but add this.

After data has been rsynced to backup device, start zimbra, and run:

        su - zimbra
/opt/zimbra/openldap/sbin/slapcat -f /opt/zimbra/conf/slapd.conf -l /tmp/ldap.ldif

cat the file to ensure it's exported.

Then once you get to the part where you replace the dummy install, do that, then import the ldap data:

su - zimbra
/opt/zimbra/openldap/sbin/slapadd -f /opt/zimbra/conf/slapd.conf -l /tmp/ldap.ldif

The rerun the installer as an upgrade.

Also, note that if it says (before applying configuration), that there is not hostname for ldap, then that usually means that your localconfig got wiped. This usually happens during a failed upgrade.

To fix it, copy
/opt/zimbra/.saveconfig and
/opt/zimbra/conf/localconfig.xml
from your backup and place it in your new install locations.

john

[phoenix]

That would assume that your new server has the same hostname and IP address as the old server and that your DNS A & MX records now point to the new server. Is that what you've done?

[JustinC]

Originally Posted by phoenix

That would assume that your new server has the same hostname and IP address as the old server and that your DNS A & MX records now point to the new server. Is that what you've done?

Yes, I've done that.

[JustinC]

Originally Posted by jholder

After data has been rsynced to backup device, start zimbra, and run:

        su - zimbra
/opt/zimbra/openldap/sbin/slapcat -f /opt/zimbra/conf/slapd.conf -l /tmp/ldap.ldif

cat the file to ensure it's exported.

Ok. Start zimbra? Or just run slapcat with zimbra not running?

Then once you get to the part where you replace the dummy install, do that, then import the ldap data:

su - zimbra
/opt/zimbra/openldap/sbin/slapadd -f /opt/zimbra/conf/slapd.conf -l /tmp/ldap.ldif

Ok. But won't that run the FC4 binary on my CentOS machine? ie. I've already deleted the dummy install at that point.

Justin.

[jholder]

Hey Justin-
1) Only LDAP should be running, ie su - zimbra; ldap start

2) Good point! Import it into the dummy install first. Once it's imported, grab /opt/zimbra/openldap-data and back it up

[JustinC]

Seems to have all worked quite nicely. Thanks John.

Justin.

[mmorse]

-marking as resolved

[sternfan]

Hi all,

I am planning on moving my server this saturday, so I've been reading a lot of these posts (and the blog) in preperation. Even though I've read this thread a few times, it doesn't make any sense to me. For a someone that is still relatively new to this - could someone please summarize what the problem was here? How was it resolved?

Thanks,
Rob

[mmorse]

From another thread I gather your going FC4>CentOS Fedora - latest versions?
If you are going from x86<>64 you often need to dump & reimport the ldap data.
One article not mentioned above is: /blog/archives/2007/05/exporting_and_importing_zimbra_ldap_data_1.html

-The one I assume you read /blog/archives/2007/10/moving_zcs_to_another_server.html