[Openstack-operators] instance not getting IP

David Magda dmagda at ee.ryerson.ca
Sun Jan 19 14:55:36 UTC 2014

On Jan 17, 2014, at 05:42, haynes.davis at accenture.com wrote:

> I am trying out three node Havana installation and am able to provision VM, but without any IP. I see below error in openvswitch-agent.log
> 2014-01-16 10:01:31.847 5428 ERROR neutron.openstack.common.rpc.amqp [-] Exception during message handling
> 2014-01-16 10:01:31.847 5428 TRACE neutron.openstack.common.rpc.amqp AttributeError: 'NoneType' object has no attribute 'refresh_firewall'
> 2014-01-16 10:01:31.847 5428 TRACE neutron.openstack.common.rpc.amqp
> While booting instance log shows "sending discover..."

You need to figure out where the DHCP requests are getting to, and if any replies are being generated (and if they are, where they are being dropped).

Log onto the compute node and attach tcpdump to the instance's network interface (usually tapXXXXXX), and check if you can see the DHCP requests going out. Then attach tcpdump to the network interface that has the GRE tunnel (?): do you see the DHCP requests leaving the compute node? Do you see the DHCP replies coming back from the Neutron networking node? If they're not coming back, attach tcpdump on the network node to see if DHCP packets are reaching Neutron.

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