Re: Virtual Bridge "Network" for Sandbox

On 6/29/20 11:01 AM, Paul O'Rorke wrote: > Hi all, > > I couldn't find any documentation on this, hopefully someone can > point me in the right direction. > > I recently set up a sand-boxed environment for our developers. There > are domain controller(s), workstations and servers in there.  The > whole thing is running on a single host using a "Virtual Network" > defined in virt-manager on that host. > > Now I find I want to add more guests and there are not enough > resources on this one host.  Can I somehow make this Virtual Network > available to two hosts?  I do not want to move to a bridged network > and have to physically join the two hosts with a discrete link when > they are already on the same subnet at the host level. > > Is that possible? You might be able to this using OpenvSwitch (iow "probably can, but I don't know the details" :-)) but libvirt doesn't have anything to set it up for you; you would need to create and configure the OVS switch outside of libvirt, then attach the libvirt guests to that switch (using "<interface type='bridge'> ... <virtualport type='openvswitch'> ...") I've idly thought about having this as a libvirt feature over the years, but as I never have that many guests, it was never a personal priority, and it wasn't immediately clear what was the best way to handle, e.g. DHCP, and routing to the outside. Definitely "patches are welcome" though :-)