On Wed, Mar 30, 2011 at 01:43:37PM +0200, Philipp Hahn wrote: > Hello, > > Am Mittwoch 30 MÃrz 2011 12:10:18 schrieb åæ: > > I'm new to libvirt, and have some questions about How to get the IP address > > of a Domain? > > A domain does not have an IP address. A domain is equivalent to a PC > in hardware, which might have none, 1 2 or more network cards, each > one with it's own MAC address. This is the only propertpy of the > hardware and can be configured via the domain XML description. What > IP address your hosts uses is in complete control of your guest > operating system: It might configure no IP addresses at all, use a > mix of IPv4 and ipv4 addresses, use static assignment, or use > external services like DHCP, but is completely independent from the > hardware. So from libvirts point of view, your domain does not have > an IP address. All of the above is absolutely true. Nevertheless you can probably get the IP address that a guest has chosen by reading out config files or (for the Windows) the Registry. Example with a Linux guest: # virt-cat RHEL60x64 /var/log/messages | grep 'dhclient.*bound to' Mar 30 19:56:22 rhel60x64 dhclient: bound to 192.168.122.220 -- renewal in 1527 seconds. Mar 30 20:21:49 rhel60x64 dhclient: bound to 192.168.122.220 -- renewal in 1375 seconds. Mar 30 20:44:44 rhel60x64 dhclient: bound to 192.168.122.220 -- renewal in 1287 seconds. Mar 30 21:06:11 rhel60x64 dhclient: bound to 192.168.122.220 -- renewal in 1461 seconds. For Windows: # virt-win-reg Win7x32 \ 'HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters' | \ grep DhcpIPAddress "DhcpIPAddress"=hex(1):31,00,39,00,32,00,2e,00,31,00,36,00,38,00,2e,00,31,00,32,00,32,00,2e,00,31,00,37,00,38,00,00,00 Windows notes: (1) The output is hex encoded UTF16-LE. Converting it to a printable string is left as an interesting exercise for the reader, but it is a dotted-quad IP address (192.168.122.178). (2) "ControlSet001" isn't exactly right there .. see the virt-win-reg man page for the full details. We could probably make a simple libguestfs-based tool that automated this for all the different guest types out there. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-df lists disk usage of guests without needing to install any software inside the virtual machine. Supports Linux and Windows. http://et.redhat.com/~rjones/virt-df/ -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list