Open Stack

Hi:

Thanks to pay attention to my doubt :) :)

The post is very detailed but it doesn´t get into my problem :(, in fact, author lets this issue to be treated in another post.

In the other hand (and to respond to Igor), my configuration is:

-          1 controller and 2 compute nodes.

-          Nova-network is installed in both compute nodes.

-          Neither the controller not the nodes have direct access to internet. The use a default gateway to access internet.

-          VlanManager

-          ip_forward is set to 1 in my compute nodes.

-          Each project has associated a VLAN.

-          Each VM has only one IP.

-          VMs belonging to different projects, communicate between them by gateways.

-          The gateway of a VM is the bridge of the VLAN that the VM belongs (this is done automatically by Nova).

I don´t have problem in my cloud, in fact communication between VMs and to the outside is working correctly (I had to set static rules in routers to access VMs from outside)

I don´t want to use NAT and I think that actually NAT is disabled. But I have been reading about it and I haven´t found any documentation that explain deeply this issue. I always read references to SNAT and that packets from VMs to internet are translated in order to put in them (as source IP), the IP of the compute-node. This is done using a parameter named routing_ source_ip.
I need to be clear when NAT is used :(. I need to know how activate/deactivate it.

I hope my question not be a big problem to you

Thanks a lot

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Sergio Ariel de la Campa Saiz
Ingeniero de Infraestructuras /
Infrastucture Engineer /

GMV
Isaac Newton, 11
P.T.M. Tres Cantos
E-28760 Madrid
Tel. +34 91 807 21 00
Fax +34 91 807 21 99
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De: Igor Laskovy [mailto:igor.laskovy at gmail.com]
Enviado el: viernes, 31 de agosto de 2012 8:37
Para: Sergio Ariel de la Campa Saiz
CC: openstack at lists.launchpad.net; openstack-operators at lists.openstack.org
Asunto: Re: [Openstack-operators] nova-network NAT question


Hey.

Well, what the type of network manager used?
For example with FlatManager virtual nic can only put in the according bridge on the node and that's it. Anything you should do manually.

Igor Laskovy
facebook.com/igor.laskovy<http://facebook.com/igor.laskovy>
Kiev, Ukraine
On Aug 30, 2012 2:24 PM, "Sergio Ariel de la Campa Saiz" <sacampa at gmv.com<mailto:sacampa at gmv.com>> wrote:
Hi:

I have a doubt about nova-network and NAT:
Virtual machines (that only have privates IPs and no floating IP) always use NAT to communicate with machines out of OpenStack cloud?

Regards...

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[Descripción: C:\Users\ssac\Documents\Firma Digital\logo_gmv.gif]

Sergio Ariel de la Campa Saiz
Ingeniero de Infraestructuras /
Infrastucture Engineer /

GMV
Isaac Newton, 11
P.T.M. Tres Cantos
E-28760 Madrid
Tel. +34 91 807 21 00<tel:%2B34%2091%20807%2021%2000>
Fax +34 91 807 21 99<tel:%2B34%2091%20807%2021%2099>
www.gmv.com <http://www.innovation2011.es/index.php?id=86>
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