[Openstack] Instance can't reach dhcp or metadata

Dan Wendlandt dan at nicira.com
Mon Apr 9 16:41:51 UTC 2012


On Mon, Apr 9, 2012 at 4:57 AM, Nicolas de BONFILS <ndebonfils at gmail.com>wrote:

> Hi,
>
> Thanks for the advice but I instead of using FlatManager, I use
> QuantumManager *
> (network_manager=nova.network.quantum.manager.QuantumManager)
> *
> Also, to be more accurate, Quantum assign an ip to my VM (I see it in
> horizon and in nova/quantum mysql db), but the VM doe not get it.
>

Hi Nicolas,

You may be hitting a known issue with QuantumManager + DHCP + Melange:
- https://bugs.launchpad.net/quantum/+bug/949234

Looks like a partial fix was suggested for QuantumManager in Nova, but
validation ran into a possible melange issue, that ultimately was rejected,
without submitting the QuantumManager fix:
- https://bugs.launchpad.net/melange/+bug/951499

Can you try just applying the one-liner patch described in 949234 and see
if it solves your problem?  If so, we can get that merged in.

Dan



>
> Regards
>
> ---
> Nicolas
>
>
>
> On Mon, Apr 9, 2012 at 13:04, <raja.meena at wipro.com> wrote:
>
>>
>> Hi Nicolas,
>>
>>     You need another interface ( say eth1 UP & running ) .   Configure
>> br100 to use eth1 .
>>
>>
>>
>> typically your configuration will look like the below ..
>>
>>
>>
>> */etc/network/interfaces*
>> # This file describes the network interfaces available on your system
>> # and how to activate them. For more information, see interfaces(5).
>>
>> # The loopback network interface
>> auto lo
>>         iface lo inet loopback
>>
>> # The primary network interface
>> allow-hotplug eth0
>>         iface eth0 inet dhcp
>>
>> auto eth1
>>
>> auto br100
>>         iface br100 inet static
>>         bridge_ports   eth1
>>         address 10.0.0.1
>>         netmask 255.255.255.0
>>         bridge_stp off
>>         bridge_fd 0
>>
>>
>>
>> nova.conf will have the following lines too..
>>
>> --fixed_range=10.0.0.0/24
>> --network_size=256
>> --network_manager=nova.network.manager.FlatManager
>> --flat_interface=eth1
>> --flat_injected=False
>> --public_interface=eth0
>>
>>
>> Meena Raja
>> Consultant
>> __________________________________________
>> *WIPRO TECHNOLOGIES
>> *No 53/1 Ganapa Towers ,Near Madivala Police Station , Hosur Main Road
>> ,Bangalore-560068
>> Hand Phone : +91-9880549725 | Desk : +91-80-39912554 |Fax No:
>> +91-80-25502160
>> Email : raja.meena at wipro.com | Website : www.wipro.com
>>
>
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>


-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Dan Wendlandt
Nicira, Inc: www.nicira.com
twitter: danwendlandt
~~~~~~~~~~~~~~~~~~~~~~~~~~~
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