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• The SUSE Linux operating system, which gives the administrator a graphical
and command line environment to manage the virtual machine host components
and its virtual machines.
NOTE
The term “Domain0” refers to a special domain that provides the manage-
ment environment. This may be run either in graphical or in command
line mode.
• The xend daemon (xend), which stores configuration information about each
virtual machine and controls how virtual machines are created and managed.
• A modified version of QEMU, which is an open-source software program that
emulates a full computer system, including a processor and various peripherals.
It provides the ability to host operating systems in full virtualization mode.
Xen-Based Virtual Machines
A Xen-based virtual machine, also referred to as a
VM Guest
or
DomU
consists
of the following components:
• At least one virtual disk that contains a bootable operating system. The virtual
disk can be based on a file, partition, volume, or other type of block device.
• Virtual machine configuration information, which can be modified by exporting
a text-based configuration file from xend or through Virtual Machine Manager.
• A number of network devices, connected to the virtual network provided by the
controlling domain.
Management Tools, Commands, and Configuration Files
There is a combination of GUI tools, commands, and configuration files to help
you manage and customize your virtualization environment.
4 Virtualization with Xen