openstack team mailing list archive

[John Garbutt <John.Garbutt@xxxxxxxxxx>]

Just double checking, but about the other machine you have put on the same network as your VMs, is the interface configured in the same subnet as the VMs?

Also, Just to be clear, not sure anyone has ever tried the sort of setup you are wanting (Single interface, with no VLANs). I have seen many setups using a single interface and VLANs, and many setups using different physical interfaces, and some combinations of the two, but I haven't seen anyone try collapsing everything onto a single physical interface. It might not work due to the way nova network in flatDHCP works (i.e. adds a DHCP server onto your network).

Just checking, but you are using FlatDHCP networking, I presume?

If you haven't assigned a floating ip and you are using some kind of flat networking, the public network configuration should be largely unimportant.

I think you want these settings:
flat_networking_bridge=xenbr0
flat_interface=eth0

What is the state of your VM, does it seem to have the correct IP address from the nova network DHCP?

I think you are close with your flags now, but I can't be specific with the help without more information:

*         a list of your flags in nova.conf

*         networking info (ifconfig or otherwise) from both Dom0 and DomU (with compute running) and the VM

*         networking config from XenServer (networks, DomU VIFs and VM VIFs)

*         a copy (in text form) of the network related tables in your DB (or all the values from your "nova-manage network create" and related calls)

More general advice is:

To make sure all the new network settings get applied, I would recommend:

*         stop all nova services

*         reset your nova DB

o   delete the old DB

o   Create the DB, do DB migration again, etc.

o   Add in your network again, (please tell us what values you use for that)

*         start all nova services

It might be worth adding a second VIF on the same network, calling that eth1 in the Nova domU and then using that as the flat_interface. Normally it is not recommended that you configure an IP address on the interface that nova-network uses for the guest networking. Not sure what you are trying will work.

Thanks,
John

From: openstack-bounces+john.garbutt=eu.citrix.com@xxxxxxxxxxxxxxxxxxx [mailto:openstack-bounces+john.garbutt=eu.citrix.com@xxxxxxxxxxxxxxxxxxx] On Behalf Of Alexandre Leites
Sent: 02 April 2012 14:53
To: openstack@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Openstack] [OpenStack] Xen Hypervisor

I tried the last thing about changing public interface to eth0... but it still doesn't work. I still with erro of can't ping anything outside of VM (created by nova on xen).
> From: todd.deshane@xxxxxxx
> Date: Mon, 2 Apr 2012 09:15:52 -0400
> Subject: Re: [Openstack] [OpenStack] Xen Hypervisor
> To: alex_tkd@xxxxxxxx
> CC: openstack@xxxxxxxxxxxxxxxxxxx
>
> On Mon, Apr 2, 2012 at 8:49 AM, Alexandre Leites <alex_tkd@xxxxxxxx<mailto:alex_tkd@xxxxxxxx>> wrote:
> > Ok, anyway i tested it and didn't worked. Any other solution?
> >
>
> You should be more specific.
>
> You should explain the specific flags you tried and then post the
> relevant logs files.
>
> Thanks,
> Todd
>
>
> --
> Todd Deshane
> http://www.linkedin.com/in/deshantm
> http://blog.xen.org/
> http://wiki.xen.org/