Ubuntu server creep - Virtualization? Cluster?
We started running 1 Ubuntu server for an open-source SIMS-like project for some special data collection - and we're now up to 3 with the addition of 2 mail gateways that provide email filtering.
Being the only Ubuntu guy here, I'm starting to wonder if I can do this better, as opposed to having 3 separate boxes currently.
Granted, I feel safer having 2 separate mail gateways, but expect I can get the redundancy in a different way.
That all being said - what's the best way to do this? Virtual servers? Cluster?
I've read through this post here:
And it makes it sound like virtual servers is the way to go. My only requirements would be: ease of use, redunancy / failover.
Thanks for any suggestions. I've only been running Ubuntu for about a year now, so I'm pretty new - I know it has some virtual pieces in it but haven't really looked at it yet (KVM?).