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Instance interfaces not getting the neutron assigned ip

asked 2014-04-30 07:11:27 -0500

Kamalika gravatar image

updated 2014-05-02 15:47:49 -0500

smaffulli gravatar image

I have an openstack environment setup with controller on one machine and Conpute (KVM) on other. The instances which come up are not able to get the ip assigned to them by neutron. I can see the ip assigned to then in nova show but when I login to the instance from console I dont see the ip in ifconfig. If I assign the same ip manually to the instance it is able to reach gateway. Is there some thing I am missing on the instance setup.

I am using OVS. The neutron log files does not show any warning and error. Though I could see the below warning in

   nova compute log: WARNING nova.virt.libvirt.vif [req-fcdeb5fd-54e7-426a-8317-0385cc282528 2d27fcf5974742a3899a1c534c483bfa 1cdeedc6dc964dc9af3eee2e53668c08] Deprecated: The LibvirtHybridOVSBridgeDriver VIF driver is now deprecated and will be removed in the next release. Please use the LibvirtGenericVIFDriver VIF driver, together with a network plugin that reports the 'vif_type' attribute

 WARNING nova.virt.disk.vfs.guestfs [req-fcdeb5fd-54e7-426a-8317-0385cc282528 2d27fcf5974742a3899a1c534c483bfa 1cdeedc6dc964dc9af3eee2e53668c08] Failed to close augeas aug_close: do_aug_close: you must call 'aug-init' first to initialize Augeas

Looks like nova compute is not assigning the fixed ip to the instance interface.Here is the nova boot command I am using:

 nova boot --flavor 2 --image fe629b8e-90ee-4ff0-893d-312f48f1fd35 --nic net-id=52899dc9-4a0c-4206-a97d-746568d8fc0e,v4-fixed-ip= --availability-zone nova:kvmserver k1

I am using havana release with flatdhcp network

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What do neutron log files say? Is there any error? Which Openstack release are you using and are you following a particular guide? What neutron plugin are you using? Is it OVS?

Try browsing previous question/answer. You could search them with the search text box on top of this page.

Antonio G. gravatar imageAntonio G. ( 2014-04-30 07:37:26 -0500 )edit

yes all neutron services are running fine.I think neutron is working fine here.its the nova compute while is not able to configure the instances .Is there any specific api that I need to install on my images.I am using a custom image build by me.

Kamalika gravatar imageKamalika ( 2014-04-30 08:05:51 -0500 )edit

Please, run on your Controller :-
$ neutron agent-list
$ nova-manage service list

dbaxps gravatar imagedbaxps ( 2014-04-30 23:21:39 -0500 )edit

Add a centos or ubuntu image to your infrastructure. Launch the instance, make sure its pulling the right data, then check out /etc/cloud.cfg. The pre-built images are using cloud-init.

mpetason gravatar imagempetason ( 2014-05-01 10:32:36 -0500 )edit

Update your question to add more details so that it's readable. Comments are hard to read.

smaffulli gravatar imagesmaffulli ( 2014-05-02 15:46:25 -0500 )edit

2 answers

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answered 2014-04-30 07:54:59 -0500

Ok, try troubleshooting using this guide.

Is the neutron-dhcp service up & running?

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answered 2014-05-03 07:26:26 -0500

Deeptanshu gravatar image

updated 2014-05-03 07:28:51 -0500


Check the connectivity between the bridge on Neutron and compute node. Check the data connectivity. If Data connectivity is not proper you won't able to assign the IP address automatically on the instances.


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Asked: 2014-04-30 07:11:27 -0500

Seen: 1,568 times

Last updated: May 03 '14