Installation and Upgrade • Re: Maldua's Zimbra FOSS Builds - Share your feedback

But I have a walled off Zimbra 8.8.15 server running on CentOS 7 and I want to move it over to this version of Zimbra. I've been googling quite a bit and even attempting some of the suggestions on how to get to a working RHEL 9 box with the latest Maldua Zimbra version on VM clones of the old server. So far, no luck. So I was wondering if there was any official/recommended path/method I could follow to get to a working new system?

1) Zimbra 8.8.15 - CentOS 7
2) Zimbra 10.0.13 - CentOS 7
3) Zimbra 10.0.13 - CentOS 8
4) Zimbra 10.1.7 - CentOS 8
5) Zimbra 10.1.7 - RHEL 9

• Upgrade your current VM to 10.0.13 (RHEL7).

• Create a new VM with AlmaLinux/RockyLinux 8

• rsync the entire /opt/zimbra/ from old VM to new VM using these rsync options: -avxPAHX (important because Zimbra uses hard links for deduplication)
  important: exlude the 'data/ldap/mdb/db/data.mdb' file because it is a sparse file (--exclude 'data/ldap/mdb/db/data.mdb')

• In the old VM, as zimbra user, take a copy of the sparse file like this:

  Code:

  $ mkdir /tmp/mdb$ mdb_copy data/ldap/mdb/db/data.mdb /tmp/mdb/

• Put /tmp/mdb/data.mdb from old VM to /opt/zimbra/data/ldap/mdb/db/ of new VM.

• Important: Take a backup of your /opt/zimbra/conf/localconfig.xml file. It will be overwritten later.

• Install 10.0.13 (RHEL8) on the new VM with the -s option (software only)

  Code:

  # ./install.sh -s

  When it asks you if you want to empty /opt/zimbra before proceeding, say No. So you keep all your data.

• After it finishes, restore the localconfig.xml from the backup you took earlier and as root user fix all permissions:

  Code:

  # /opt/zimbra/libexec/zmfixperms -extended

$ zmcontrol start

# cat /opt/zimbra/conf/crontabs/* > /var/spool/cron/zimbra# chmod 600 /var/spool/cron/zimbra

Statistics: Posted by akanellis — Fri Jun 20, 2025 2:04 pm