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Re: How to work with Flat DHCP Grizzly


Openstack networking can be very frustrating, the guide you are following
is for quantum so you don't use nova.networking configurations.

1. download the cirros image in the tutorial , you can then login via vnc
without networking and rebuild a static network on that image for testing

Quantum is managing the dhcp so look at the dhcp logs to see if it even
received the request, I believe quantum still uses dnsmasq for managing
dhcp, tcpdump -i the bridge to see if you see where the request is going.

The guide you are using seems quite specialized, I would suggest comparing
with other guides, I use nova networking myself.


On Thu, Jul 25, 2013 at 4:16 AM, comiqadze <comiq@xxxxxxxxx> wrote:

> Hi, folks!
> Does somebody know any guide for installation of the Flat DHCP step by
> step?
> I followed this guide for building the system:
> https://gist.github.com/tmartinx/d36536b7b62a48f859c2
> my system is: 2 machines with ubuntu 12.04. one compute, one controller.
> I neatly followed this guide, except for one thing: my IPs for controller
> and compute nodes and for instances are of the same network.
> Controller, Compute - x.x.15.70, 71. Instances pool: x.x.15.230-240
> Do I need to specify Network Manager in nova.conf?
> Like: network_manager=nova.network.manager.FlatManager
> flat_network_bridge=br-eth0
> flat_interface=eth0
> Currently I can create an instance, I can see it's IP in Dashboard, but I
> cannot ping it. And inside there is no network.
> Even when I manually changed Interfaces file, I still cannot ping it.
> When I load Ubuntu instance, it requests login and password? Does somebody
> know where I can find it?
> Thank you. Any help will be very appreciated.
> regards, comiq
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