On 27 March 2014 22:49, Juergen Brendel <[email protected]> wrote: > > Hello! > > Thank you for your reply.
You're welcome :) >> - if dhcp isn't working, try using tcp dump on the compute nodes and >> debug your overlay network (there are many blog posts on this) > > I guess that would be next. > > >> That all said - its very odd that the vm got an ip on the *public* >> network. I would have expected it to get an ip on the private network >> and be exposed on the public one via a floating ip. the public network >> probably has dhcp off (see neutron net-show and neutron subnet-show). >> >> At a guess - you booted the vm as admin, rather than the user account, >> and you got the public network as the network for the VM. Try using >> the demo user account, or make your own user. > > Yes, you are right. I changed it now so that I create the VM as the demo > user. I promptly get an IP address assigned from the private network. > Well, nova and neutron think the address is assigned, but as we saw from > the console-log, the guest never received that address... > > Maybe the above additional information is useful in determining where to > look next? Ok, so the current status is: - booting as demo user - nova and neutron assign you an address from the private network - guest doesn't pick it up via DHCP? - there's no sign of the DHCP request on the overlay network? So - I think we're back to 'debug DHCP on the overlay network'. e.g. something like http://docs.openstack.org/trunk/openstack-ops/content/network_troubleshooting.html You should be able to insert tcpdump probes at every point along the transit path from the hypervisor through to the dhcp agent - I suggest just firing a few up - network node gre endpoint interface, the DHCP netns, the tap port for the VM, the outbound interface of the hypervisor. You should see encapsulated DHCP requests on some of those - and that will tell us where it gets to. Seeing it doesn't mean its right of course - one of the failure modes I've see is bad VLAN tagging in GRE leading to the receiver dropping the packets. -Rob -- Robert Collins <[email protected]> Distinguished Technologist HP Converged Cloud _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : [email protected] Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
