OpenXenManager is a nice graphical environment for managing the Xen virtualization environment. You still need to use QEMU or virt-install/virt-manager to manager domains themselves, but OpenXenManager takes some of the guessing games out of things. Having said that, xm is still the way to go for the most part.
Before you install OpenXenManager, you’ll need svn, which isn’t baked into a default Ubuntu 12.04 or 12.10 installation. We’ll just use apt-get to build subversion and some python frameworks required for openxenmanager:
sudo apt-get install subversion
sudo apt-get install python-glade2 python-gtk-vnc
Next, grab openxenmanager using subversion:
svn co https://openxenmanager.svn.sourceforge.net/svnroot/openxenmanager openxenmanager
Hop into your openxenmanager trunk and fire it up:
Now you have a GUI for managing domU. Good luck!