Re: [libvirt-users] Using libvirt with a preexisting network infrastructure
On Fri, 29 Jul 2011 10:15:09 +0100 Tom Hughes <tom(a)compton.nu> wrote:
On 29/07/11 10:08, Vegard Vesterheim wrote:
> I have a server running Ubuntu natty (libvirt 0.8.8) with separate
> ethernet interfaces. I have created an unnumbered bridge for each
> interface, these are connected to an already established network
> infrastructure, with preexisting DHCP and DNS services.
>
> I would like to handle *establishment* of these bridges outside libvirt
> (via /etc/network/interfaces), but still have them defined as networks
> within libvirt. So, libvirt shall not *configure* the bridges, just be
> aware of their existence and connect each VM to its configured
> bridge. This way I can use virt-manager/libvirt to connect my virtual
> hosts to the correct network. The libvirt commands net-start,
> net-destroy would become no-ops. It seems that libvirt is geared towards
> handling all network configuration itself, but I do not need help from
> libvirt for establishing the bridges, DHCP and DNS.
If you want to connect your VMs to existing bridges then just ignore
all the network stuff in libvirt and tell your VMs to connect to those
bridges
Yes, this is exactly what I would like to do.
- virt-manager should offer the bridges as options when you
create an interface and you just select the one you want.
I do not see my bridges as options in virt-manager, but when configuring
a network device for a VM, I can select "Specify shared device name" and
manually enter the name of an existing bridge device.
It would be nice if virt-manager could present a menu of existing
devices, or alternatively, that one could define a network in libvirt
which simply refers to the preexisting bridge, but this is good enough
for me. Thanks.
- Vegard V -