MessagingTimeout when creating instance, validate_networks?

asked 2015-02-10 12:13:09 -0600

jamesgao gravatar image

Hi everyone, I just set up Neutron in Juno on a Ubuntu 14.04 server, and I'm having trouble getting nova to boot an instance. I receive MessagingTimeout exceptions whenever I try. Neutron is verified working (initial network setup + router is pingable), but I recieve a massive trace in /var/log/nova/nova-api.log whenever I try to launch an instance: (

The only line that that might indicate where to look is the validate_networks line, which I assume has something to do with neutron being inaccessible. I've googled the message, and the only relevant thing I found was here: ( . However, I've triple-checked the configuration, and /etc/nova/nova-api.conf on all the servers have the correct setup. Any leads on what to try next? I can't seem to find any other messages in any of the dozens of log files.

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answered 2015-02-10 21:08:44 -0600

jamesgao gravatar image

Ok, I just managed to figure it out. The Openstack instructions located here: ( made it seem that the nova configuration goes on the COMPUTE node. It actually needs to go on the CONTROLLER node. Once I copied the config entries into /etc/nova/nova.conf on the Controller node, this error went away!

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answered 2016-01-12 08:00:57 -0600

kl4reg gravatar image

Hi, I should really give a "like" to you, as I have the same issue. I believe there are so many people encounter the same problem, as there are many discussions with the similar topic, unfortunately none of them get a solution, until I hit this one. To be more specific, I add the following 4 lines to my controller's nova.conf to make it works:

network_api_class = security_group_api = neutron linuxnet_interface_driver = firewall_driver = nova.virt.firewall.NoopFirewallDriver

I think they should update the document.

Once again, many thanks for your answer.

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Asked: 2015-02-10 12:13:09 -0600

Seen: 313 times

Last updated: Feb 10 '15