Quoting Seth Arnold ([email protected]): > Thomas, the more I've read about dnsmasq and the complaints from other > users in bug 1003842, the more I think that we might be better off taking > a different approach entirely. Please let me know what you think. > > Your dnsmasq-A, dnsmasq-B, dnsmasq-C daisy-chain approach could probably > work. But guest VMs or guest LXC domains that are using dnsmasq-B couldn't > then look up hosts registered with dnsmasq-C. > > This daisy chain would be brittle: if dnsmasq-B is stopped by the > administrator or otherwise dies, dnsmasq-C's configuration would need > to be updated to forward to dnsmasq-A instead. > > And, libvirt-controlled guests and lxc-controlled guests would also > need networking properly configured to route between libvirt guests and > lxc guests. This might not be desirable. (In that case, you wouldn't > care that they couldn't look up hostname information from the other > virtualization technology anyway.) > > So, instead of a chain, how about a flatter layout? > > I haven't yet wrapped my head around the entirety of the implementation. > But I wanted to share what I'd thought of so far to get your feeling if > this is even useful to pursue to the end. > > Have dnsmasq-lxc, dnsmasq-libvirt, authoritative for their own little > networks. If an lxc guest wants to resolve libvirt guests, the lxc guest > needs to have /etc/resolv.conf configured to query both dnsmasq-lxc > and dnsmasq-libvirt. If a libvirt guest wants to resolve lxc guests, > the libvirt guest needs to have /etc/resolv.conf configured to query > both dnsmasq-libvirt and dnsmasq-lxc. > > If those guests also want to resolve LAN hosts or Internet hosts, they'll > need to add more "nameserver" lines. Don't abuse dnsmasq as a forwarder, > because it doesn't handle it as smoothly as it could.
I guess the reason this confused me when I first read it last week is because I *thought* this was how we expected things to work before, and what your original request was for. But I think I see the distinction now. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1163147 Title: Please run dnsmasq in such a way that it can also be used on the host — to look up the VMs' names To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1163147/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
