How to move ZCS to another server
How to move ZCS to another server
Problem
In this article, we will explain how to move/migrate a zimbra server to another machine.
Prerequisites
Both the source and destination zimbra servers must be running the same version. E.g. if source is running 8.6, the installed zimbra on the destination must be also 8.6.
Resolution
In a nutshell, the solution is: stop zimbra on the source server, make a backup of /opt/zimbra, install new server, stop the old server, set up the new server's networking and hosts config, install software zcs to the new machine, substitute the /opt/zimbra on the new machine with the already made backup from the old machine, fix permissions, run a normal zcs install.
Below are the exact steps that needs to be taken, to complete the migration:
- On the old server:
1. # su - zimbra
2. $ zmcontrol stop
3. $ exit
4. Make sure all zimbra services are stopped: # ps aux | grep zimbra
5. Now, you can copy the /opt/zimbra directory to another backup location, and from there to copy it to the destination server later, or you could mount external disc and copy it there, or simply copy it to the destination server (if already installed with the correct OS).
As root user, copy it to the remote machine:
rsync -e ssh -axvzKHS /opt/zimbra/ 10.0.0.1:/tmp
that command will copy /opt/zimbra directory to a remote machine with IP 10.0.0.1, in the /tmp directory (using ssh). or to a local mounted disk:
- rsync -axvzKHS /opt/zimbra /mnt/zimbra_backup
8. Install a new server, with supported Operating System for the zcs version.
9. Turn off the old ZCS Server
10. Set up the new ZCS Server:
- -change the hostname as the old server
- -change the network settings as the old server
11. Download the version of ZCS on the new server.
12. As root, run the installer with the -s option: ./install.sh -s
13. When the install -s completes, you can delete the /opt/zimbra directory. rm -rf /opt/zimbra
14. Now, copy the /opt/zimbra directory backup we made in step 5, to the new server in /opt directory, so that the structure is the same: /opt/zimbra. If you have copied it to a different server, just rsync it to the new server. If you used external disk, mount it and as root rsync your backup to the new location: rsync -avH /mnt/zimbra_backup /zimbra /opt/.
15. As root run: /opt/zimbra/libexec/zmfixperms -e -v
16. As root rerun the installer without the -s option: ./install.sh
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