Cloudmin Services is a plugin to Cloudmin that lets multiple Virtualmin systems offload their DNS hosting, MySQL databases, spam and virus filtering to one or more central systems. This can significantly reduce the RAM and CPU needs of those Virtualmin systems - for example, the ClamAV virus scanning server clamd consumes 100M of RAM on each system it runs on, even though it is idle most of the time.
If you run Cloudmin and multiple systems running Virtualmin, we are currently making Cloudmin Services available for alpha testing. If you are interested, contact me at jcameron@virtualmin.com with your virtualmin.com username, and I will set you up with an installer.
For more information on Cloudmin Services, see the documentation at :
http://www.virtualmin.com/documentation/provisioning/intro
and
http://www.virtualmin.com/documentation/cloudmin (under Cloudmin Services)