[Openstack] Weird Network problem
Georgios Dimitrakakis
giorgis at acmac.uoc.gr
Wed May 28 23:21:35 UTC 2014
> On Wed, May 28, 2014 at 4:46 PM, Georgios Dimitrakakis wrote:
>
>> Hi!
>>
>> I am performing a new installation of openstack-icehouse on a
>> CentOS 6.5 machine (all-in-one).
>>
>> I have configured a FlatDHCP nova network and I can start
>> succesfully a cirrOS instance.
>> Moreover, I can ping it (10.0.0.2) and I can ssh to it without any
>> problems.
>>
>> The problem is that although I can resolve a hosts name (eg.
>> www.google.com [1]) from inside the instance I cannot ping it.
>> It seems as if I cannot go outside my master host from inside that
>> instance.
>>
>> The same thing happens if I provide a floating-ip to the instance.
>> I can ping and ssh to the floating IP but if I ssh into the instance
>> I cannot reach the "outside" world.
>>
>> Any ideas???
>>
>> Best,
>>
>> G.
>>
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>
>
> Double check your settings for flat_interface and
> public_interface. Sounds like your bridge is not configured
> correctly so youre never actually bridging to the public net. Is
> this multiple nics or single?
>
>
Thanks for the tip.
Indeed there are multiple nics!
My flat interface is eth1 bridged with br100 (192.168.*.*) while my
public interface is eth0
Seems fine to me and the same as another configuration with
openstack-havana which with the same settings is working properly.
Best,
G.
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