Re: Step by step instructions for KVM networking

From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: Daniel Qarras <dqarras-/E1597aS9LQAvxtiuMwx3w@public.gmane.org>
Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: Re: Step by step instructions for KVM networking
Date: Thu, 22 Feb 2007 11:17:29 +0200	[thread overview]
Message-ID: <45DD5FA9.2010602@qumranet.com> (raw)
In-Reply-To: <786483.53715.qm-uAqfo9yIfQuvuULXzWHTWIglqE1Y4D90QQ4Iyu8u01E@public.gmane.org>

Daniel Qarras wrote:
> Hi all,
>
> I've played with Xen on my Fedora and it's been working fine. Now I'm
> testing KVM with 2.6.20 kernel and it's working nicely, too, but I'm
> unable to setup a full-blown networking, i.e., a mode where also
> icmp/udp work. User-mode networking works well, e.g., yum and firefox
> run just fine under KVM.
>
> Could someone please post a step by step list how to enable
> non-usermode networking with KVM/QEMU on Fedora? I've googled
> for this and found instructions (mostly for Debian) but I've not been
> able to set up this on Fedora.
>   

In general the setup is exactly like qemu, so any howto for qemu is 
applicable.

Here's what I do:

- copy scripts/kvm from the kvm tarball to /etc/init.d, chkconfig and 
start the kvm service. that sets up a bridge
- copy scripts/qemu-ifup into a new directory /etc/kvm.  make sure it is 
executable.
- run qemu like this:

   qemu-system-x86_64 -net nic -net tap,script=/etc/kvm/qemu-ifup [other 
options]...

> (My test machine has one NIC with a 10.x.x.x address in an intranet. I
> would want that my KVM guests have, e.g., 192.168.x.x static addresses
> and they can ping each other, the host machine, and access outside
> world with tcp/udp/icmp etc. So something what Xen does now
> automatically on Fedora. Connection initiated from outside world are
> not essential but would of course be a nice bonus.)
>   

The configuration above would put the guests on the same ethernet 
segment, so you'd need to assign them addresses in the 10.0.0.0/8 subnet.

-- 
error compiling committee.c: too many arguments to function

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