[SOLVED] 'Mirrored' servers guide

[ekkas]

As a relative newbie to clustering(?) and Linux in general, can someone please point me to the terminology and maybe a guide on how to install 2 servers that can run as backups and as full mirrors, so if one server fails, the other 'takes over' and once the 'primary' is back, that it will replicate itself again?

I hope you understand what I mean
Ekkas

[uxbod]

Welcome to the forums

Please search the forums for DRBD.

[veronica]

Since you use network edition u can also use redhat clustering : -

Documentation for the Zimbra Collaboration Suite; open source email, contacts, and group calendaring

[ekkas]

Thanks for the replies, but I use the OS version. I had a look at DRDB, but need some more time to study it as I'm not an 'old hand' at Linux. Very excited about it all though, since I installed Zimbra about a year ago, I had just about no problems and a lot less virus/spam issues. Now expanding to start to install at clients, possibly Network edition and they want a failover, but as their mail and calendar must be always active and all archived on the server, I'll need a type of 'mirror' server, not just a backup MX/MTA server.

Using nice and free Ubuntu so far.

Ekkas

[ekkas]

Got it all working with DRBD and Heartbeat to provide a failover server that is always in sync. Working very nice apart from a few natting problems with the dynamically assigned (heartbeat) IP.