Instance does not receive DHCP address [closed]

asked 2014-01-26 12:10:40 -0500

kbreit gravatar image

I have a three node setup which basically works except the instances do not seem to receive an IP address via DHCP. If I do a tcpdump on the qbr interface attached to the instance I do see this:

12:00:15.286134 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from fa:16:3e:d0:79:03 (oui Unknown), length 280

However, if I do a tcpdump on br-int or br-tun on the compute node, I do not see the DHCP request. Here is the ip netns output on my Neutron node:

root@neutron:/var/log/neutron# ip netns
qdhcp-c91c85d4-5331-489d-901f-1fc9eebcb69c
qrouter-e5ae717a-1955-48c0-b33e-5b469f2159e0

Please let me know what steps I can take to troubleshoot or any additional information needed.

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Closed for the following reason question is not relevant or outdated by larsks
close date 2014-04-07 09:10:53.216282

Comments

If you assign an ip address to the instances manually, do they have functional networking? That is, is this just a problem with receiving DHCP leases, or is networking in general not functioning?

larsks gravatar imagelarsks ( 2014-01-26 20:20:06 -0500 )edit

Hope you are able to solve this issue ? Did you check as larks suggested above ?

dheeru gravatar imagedheeru ( 2014-01-28 07:08:51 -0500 )edit

can you post ovs-vsctl show, ovs-ofctl dump-flows br-tun and ifconfig at least?

anemic gravatar imageanemic ( 2014-01-28 09:50:33 -0500 )edit

Got the same problems, I do it manually but seems doesn't work it could not see the VMs intances of the other node.

But the dhcp agent work on the Network node with a nova-compute on it, the instances doesn't have any problems but on the other compute node doesn't get an IP.

Need helps.

tahder gravatar imagetahder ( 2014-04-07 01:41:22 -0500 )edit

tahder: you would probably be better off opening your own question.

larsks gravatar imagelarsks ( 2014-04-07 09:10:23 -0500 )edit