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instance cannot get ip address although it is displayed in dashboard [closed]

asked 2016-11-11 04:50:06 -0500

Ciarf gravatar image

Hi all! I set up an OS environment following the official documentation for Ubuntu 16.04 choosing to deploy Networking Option 1 (Provider networks). Now, this is my problem: whenever I create a new instance I can see its IP address in the dashboard (as you can see from (here)); however when I do ifconfig within such machine, using the dashboard console, I can see that no ip address has been assigned to such machine (as you can see from (here)). Therefore i cannot ping that machine unless I manually assign it an IP (so far I've always assigned the same that i read from the dashboard). All neutron services seem active and running to me. (This) is what i get when running neutron agent-list. Any idea about how to solve this issue? Thanks in advance dear community!

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Closed for the following reason the question is answered, right answer was accepted by Ciarf
close date 2016-11-16 03:26:55.132800


I don't see your screenshots, but it seems the instance is connected, just doesn't get the IP address. Something wrong with DHCP server? neutron-dhcp-agent.log perhaps?

Bernd Bausch gravatar imageBernd Bausch ( 2016-11-11 09:18:29 -0500 )edit

Hi Bernd and thank you for helping me. When running neutron agent-list i see that all agents are correctly up. However, in neutron-dhcp-agent.log i can see some warnings like this one:

Ciarf gravatar imageCiarf ( 2016-11-11 09:59:25 -0500 )edit

2016-11-11 12:25:42.438 15928 WARNING stevedore.named [req-09aab0f2-e0ce-43fc-a2cf-b016e95aa78a - - - - -] Could not load neutron.agent.linux.interface.BridgeInterfaceDriver

Ciarf gravatar imageCiarf ( 2016-11-11 10:00:10 -0500 )edit

The error is crucial and probably means that the configured DHCP driver is not found on your system. The driver is a class in ...../neutron/neutron/agent/linux/; check if such a file exists. If yes, I don't know why it's not found. If not, check again if you installed everything.

Bernd Bausch gravatar imageBernd Bausch ( 2016-11-12 00:54:23 -0500 )edit

I apologise for my ignorance but I have no idea where to find that path/file :(

Ciarf gravatar imageCiarf ( 2016-11-13 08:40:50 -0500 )edit

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answered 2016-11-11 22:17:41 -0500

diltram gravatar image

May you provide the logs from cloud-init from your VM? Without that, there is no way how to find out what is going one there.

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Hi Diltram, actually i'm using a standard Ubuntu ISO image so i suppose cloud-init is not installed..

Ciarf gravatar imageCiarf ( 2016-11-14 02:35:58 -0500 )edit

What document are you following to setup this ISO image? I believe you have already installed ISO image and converted to QCOW2 or VHD format and running it as Virtual Machine. I assume that VM is not getting the IP address properly. Right?

Beny gravatar imageBeny ( 2016-11-16 00:47:36 -0500 )edit

answered 2016-11-16 03:25:28 -0500

Ciarf gravatar image

I was getting crazy with this issue.. but finally i discovered that it was caused by a f*g broken cable towards the controller node!!! Changed it and everything is working fine :) Thank you all guys for trying to help me.

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Asked: 2016-11-11 04:50:06 -0500

Seen: 1,058 times

Last updated: Nov 16 '16