[Openstack-operators] Ocata provider network issue failing to raise interfaces

Curtis serverascode at gmail.com
Fri Oct 20 21:09:42 UTC 2017


On Thu, Oct 19, 2017 at 5:22 PM, Matthew Czajka <mattczajka at gmail.com> wrote:
> Hi All,
>
>
>
> I’m running into an issue with a new Ocata deployment. I’m unable to boot an
> instance directly from the provider network. Instance logs show that it
> keeps repeating “failed to raise interfaces” so it doesn’t get an IP
> assigned, and then can’t reach the metatdata servers.
>
>
>
> Booting an instance from a self-service network works fine, can ping other
> internal IPs within the vlan, and can assign and use a floating IP.
>
>
>
> Deployment is running linux bridge, with a flat network for provider. 3
> controllers, 3 network nodes, and 2 compute nodes. Using dhcpdump I can see
> DHCP requests being made, but no acknowledgement afterwards. If I console
> into the server and assign the public IP statically, that IP then works.
> It’s only at boot (or reboot), that the instance can’t grab the IP.
>
>
>
> Any help would be appreciated, I’ve been banging my head over this for a
> while.

Hey Matt :),

To get metadata there has to be a dhcp server or router configured, or
use config drive. Presumably there is no dhcp service running via
neutron in your situation, so it can't get an IP nor the metadata
route injected. You could test with a config drive if you wanted to
verify, or don't want dhcp service. Sometimes organizations refuse
dhcp services on networks, but I'm guessing that is not the case in
this situation.

Basically I expect there is no dhcp service. Double check the network has dhcp?

Thanks,
Curtis.

>
>
>
> Thanks,
>
> Matt C
>
>
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