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Re: [libvirt] "static" ip address

On Sat, Aug 2, 2008 at 11:22 PM, Fabian Deutsch <fabian deutsch gmx de> wrote:

> I'm using KVM with the wonderful help of libvir (virsh), on a
> to-be-production-ready server of mine.
> I would like to be able to choose on a way or another the ip of each
> of my VM. As far as I can understand, the only way to get an IP (from
> a vm point of view) if the dhcp it. But I have no garantee vm1 will
> always get x.x.x.1 Ip adress...

I suppose you are speaking about the NAt-Solution.

Yes. Sorry. My server has 1 public IP address. Host will host an Apache proxying http services hosted by VMs. VMs will have private IP addresses (192.168.0.x).

I can not have any other public IP addresses, so bridging is not a solution (AFAICU)

Nat seems good choice in my case, I think.


Have a look at some bridge-Solution:


You are proposing me to use :

	<bridge name="virbr1" />
	<forward mode="route" dev="eth1"/>
	<ip address="" netmask="">
	    <range start="" end="" />

I understand this defines a network, where IP address of host in VM-World is, and DHCP distributes IP addresses to VMs. Nat is disabled ?

I just don't understand how I can specify that VM1 (with its mac address), should have .1 IP address. Natting will be automagic ?

I must admit I don't really know how to use routing system, I presume :(

Thanx for your help,

- fabian


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