Re: A bridge network for QEMU VMs

[David Larsson <david.larsson@selfhosted.xyz>]

Hi,

There is an openvswitch service that might be useful. Marius used it when showing how to setup ganeti on Guix here: <https://guix.gnu.org/en/blog/2020/running-a-ganeti-cluster-on-guix/>

I have a Ganeti cluster myself and occasionally I have run some manual openvswitch commands for VM's not managed by ganeti which I think could have been declared similarly to whats done in the blog post if u want it to be declarative.


Regards,
David


On June 11, 2024 1:52:34 PM GMT+02:00, Fabio Natali <me@fabionatali.com> wrote:
>Hi,
>
>I'd like to set up a server's network so as to have:
>
>- a bridge interface,
>- the real Ethernet interface to be associated to the bridge.
>
>Among other things, this setup makes it possible to use QEMU in "bridge
>networking" mode, i.e. to have QEMU VMs to also connect to the bridge
>and become reachable as ordinary machines in the LAN.
>
>The Cookbook has a pretty thorough section⁰ on how to achieve
>this. However, it makes use of NetworkManager, which makes things rather
>stateful and can't be configured declaratively, if I understand it
>correctly? I think I'd have a preference for
>'static-networking-service-type' instead.
>
>However, when it comes to 'static-networking-service-type', I found this
>other thread¹ which indicates some missing pieces in Guix's
>'network-link' and 'network-set-up/linux'. Looking at the Guix logs, I
>don't think there has been any further development on this since the
>thread.
>
>Anyone else who has encountered the same issue? Any other possibility I
>should take into account? Could it be worth to re-consider the
>NetworkManager approach? Should I think of a little patch that adds the
>missing functionality to 'static-networking-service-type'?
>
>Thanks, cheers, Fabio.
>
>
>⁰ https://guix.gnu.org/cookbook/en/html_node/Network-bridge-for-QEMU.html
>¹ https://lists.gnu.org/archive/html/help-guix/2023-03/msg00269.html
>
>
>-- 
>Fabio Natali
>https://fabionatali.com