Translations by takedown

<emphasis>-f:</emphasis> path to the file, logical volume, or partition to be used by the new virtual machine.

<emphasis>--connect:</emphasis> specifies which hypervisor to connect to.

Also, use <emphasis>-d</emphasis> or <emphasis>--debug</emphasis> option to help troubleshoot problems with <application>virt-clone</application>.

Replace <emphasis>web_devel</emphasis> and <emphasis>database_devel</emphasis> with appropriate virtual machine names.

There are several utilities available to manage virtual machines and <application>libvirt</application>. The <application>virsh</application> utility can be used from the command line. Some examples:

To list running virtual machines:

To start a virtual machine:

Similarly, to start a virtual machine at boot:

Reboot a virtual machine with:

The <emphasis>state</emphasis> of virtual machines can be saved to a file in order to be restored later. The following will save the virtual machine state into a file named according to the date:

A saved virtual machine can be restored using:

To shutdown a virtual machine do:

A CDROM device can be mounted in a virtual machine by entering:

In the above examples replace <emphasis>web_devel</emphasis> with the appropriate virtual machine name, and <filename>web_devel-022708.state</filename> with a descriptive file name.

Virtual Machine Manager

The <application>virt-manager</application> package contains a graphical utility to manage local and remote virtual machines. To install virt-manager enter:

Since <application>virt-manager</application> requires a Graphical User Interface (GUI) environment it is recommended to be installed on a workstation or test machine instead of a production server. To connect to the local <application>libvirt</application> service enter:

You can connect to the <application>libvirt</application> service running on another host by entering the following in a terminal prompt:

The above example assumes that <application>SSH</application> connectivity between the management system and virtnode1.mydomain.com has already been configured, and uses SSH keys for authentication. SSH <emphasis>keys</emphasis> are needed because <application>libvirt</application> sends the password prompt to another process. For details on configuring <application>SSH</application> see <xref linkend="openssh-server"/>

Virtual Machine Viewer

The <application>virt-viewer</application> application allows you to connect to a virtual machine's console. <application>virt-viewer</application> does require a Graphical User Interface (GUI) to interface with the virtual machine.

To install <application>virt-viewer</application> from a terminal enter:

Once a virtual machine is installed and running you can connect to the virtual machine's console by using:

Similar to <application>virt-manager</application>, <application>virt-viewer</application> can connect to a remote host using <emphasis>SSH</emphasis> with key authentication, as well:

Be sure to replace <emphasis role="italic">web_devel</emphasis> with the appropriate virtual machine name.

See the <ulink url="http://kvm.qumranet.com/kvmwiki">KVM</ulink> home page for more details.

For more information on <application>libvirt</application> see the <ulink url="http://libvirt.org/">libvirt home page</ulink>

The <ulink url="http://virt-manager.et.redhat.com/">Virtual Machine Manager</ulink> site has more information on <application>virt-manager</application> development.

auto lo iface lo inet loopback auto br0 iface br0 inet static address 192.168.0.10 network 192.168.0.0 netmask 255.255.255.0 broadcast 192.168.0.255 gateway 192.168.0.1 bridge_ports eth0 bridge_fd 9 bridge_hello 2 bridge_maxage 12 bridge_stp off

Enter the appropriate values for your physical interface and network.