The power supplies cause a real wiring nightmare! It would be great to have a better solution to delivering power:
It runs almost silently.
I plan to encase the whole thing in a metal case, firstly to make it more portable, and secondly to reduce the amount of RF given off. You would probably not be able to legally run this in a commercial environment because of EMC regulations. You definitely would not be allowed to sell it.
The next problem is management software. While it’s certainly possible to log in to each of the four individual hosts and run virsh commands, that’s going to get tedious rather quickly.
The problem is that all “solutions” to this are rather heavyweight. I could manage the hosts using Puppet and install OpenStack, but it would probably take longer to set that up than the time saved. There’s a lot of cloud software out there, but not much that nicely manages 4 hosts without requiring huge dependencies. What I really want is a small command line tool that uses libvirt remotely so I don’t have to install anything on the hosts.