Floating ip get set on the wrong physical server

Gary Kotton gkotton at redhat.com
Wed Apr 3 11:40:29 UTC 2013

On 04/03/2013 02:36 PM, Nux! wrote:
> On 03.04.2013 12:27, Gary Kotton wrote:
>> On 04/03/2013 01:35 PM, Nux! wrote:
>>> Hello,
>>> I'm currently testing Grizzly on EL6 from 
>>> http://repos.fedorapeople.org/repos/openstack/openstack-grizzly/epel-6/
>>> I'm using packstack to deploy it on 3 physical machines, one of them 
>>> acts also as controller, the other 2 are just nova-compute instances.
>>> The problem starts when adding a floating IP to an instance, in my 
>>> case the floating (public) IP gets set on the controller, whereas 
>>> the instance is running on another physical server...
>>> Any ideas?
>> On which host is the nova-network running? This is what performs the
>> SNAT (i.e. the floating IP support). In nova you can run this on each
>> compute node for HA and scalability.
> Hi Gary!
> Openstack-nova-network ran only on the controller initially (this is 
> how packstack set it up). I did try to set up more IPs in the answers 
> file afterwards, but I got this:
> "Parameter CONFIG_NOVA_NETWORK_HOST failed validation: Given host is 
> not in IP address format:,,"
> I take it it doesn't like comma separated stuff (though it worked for 
> the COMPUTE hosts).

This may be a bug (sorry I am not familiar with it)

> I have installed and started openstack-nova-network manually on the 
> other machines, but it did not help in any way.

If you made the changes manually can you please check that the nova.conf 
files were updated correctly with the networking details.

> Lucian

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