Hey friend!

I've never done this, but I set out to find the right information that could help you. I don't think I did, but I do think I found something that can help you move in the right direction. I found this tutorial for HA Zimba on CentOS 6:

https://imanudin.net/2015/03/24/how-to-install-configure-zimbra-high-availability-ha/

Given that I've never done this, you should know that I can't even say that this tutorial works flawlessly with CentOS 6. Certainly if you are to use it for CentOS 7, there may be things that you will need to intuitively know to change along the way. I hope this at least helps you to move in the right direction :)

Jarland

Thanks Jarland, for your suggestion I have gone through Zimbra forms they have mentioned that Zimbra - 8 + versions wont support ha cluster the failover cluster need to be maintained by VMware we are checking with that, if u have any suggestion please let me know

Regards
Noor Ahmed
noor.sysad@gmail.com