Virtual Machines under Linux

[Jonathan Hutchins]

Quoting Duane Attaway <dattaway at dattaway.org>: 
 
> Behold: 
  
> http://user-mode-linux.sourceforge.net/ 
  
> where you can even compile and start new kernels without rebooting!  Its  
> like installing a server farm within a single computer. 
 
Yeah, found that like 30 seconds after I posted. 
 
Anybody have any experience with it?  Hardware requirements? 
 
It looks like it would be a significant project to migrate an independent 
server with a "live" IP address and multiple virtual hosts to this kind of 
setup.  I'd have to do some tricky rewrites on the firewall to get the right 
URLs to the VM from the host (one NIC/IP). 

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