Can this be used to make a network of QEMU VMs on different/multiple machines?

[CheyenneForbes]

if yes, how? I have 4 QEMU host servers

[Metallion]

Hi @CheyenneForbes

First of all, very sorry to not reply to you for 5 entire months. We've just been so busy with other work that this issue went unnoticed.

Making a network for QEMU VMs over multiple hosts is exactly what OpenVNet does. There's some limited guides on https://openvnet.org but they're slightly outdated. Still mostly correct though.

I know it's likely you've already solved or moved on from this problem but if you're still looking for a solution, I'd love to help out.

First we'll have to install OpenVNet and register the physical network with which the QEMU hosts are connected to each other. Are all hosts located on the same L2 segment or are there routers inbetween.

Also, what kind of network did you have in mind for the VMs? If all you need is for them to be together in a single L2 segment, it's easier to just set up bridged networking on the VMs and connect the hosts to a switch without running OpenVNet.

If you'd like to create all kinds of software defined networks for the VMs to be in, OpenVNet would be the kind of solution you're looking for.

Again I'm sorry for the very late response and I hope we'll hear back from you!