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[Vishvananda Ishaya <vishvananda@xxxxxxxxx>]

Yes it is possible to do everything over one interface, but it is probably better to separate traffic out over multiple vlans if you can.  You could have rabbit and mysql on one vlan (call it the management vlan), and the public internet traffic/api on a separate vlan.  Finally you could put all of the vms on their own vlan (or if you are using vlan mode as you say, then each project will get its own vlan).

Vish

On May 16, 2012, at 10:24 AM, Paras pradhan wrote:

> Hi,
> 
> I have 2 servers. One is the controller that runs everything except
> nova-compute. Another is a compute node that runs nova-compute only.
> Both of them has only one NIC (eth0) . In VLAN mode, do I need the
> second NIC (eth1) ? If yes in both nodes?
> 
> This is what I am tyring to acheive.  Install only one nic in both
> server and via bridge from eth0, route the instances. Is this doable?
> 
> OS: ubuntu 12.04, Openstack: Essex.
> 
> 
> Thanks in Adv!
> Paras.
> 
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