External Gateway and DHCP issue

asked 2013-12-17 05:29:07 -0600

techistheway gravatar image

I have a 3 node setup. 1 control setup as the network node also and 2 compute nodes. I am able to get instances of cirros running and after manually setting the ip addresses, i'm able to ping instances that are on the same network. DHCP never assigns an address and i get the following:

Starting network... udhcpc (v1.20.1) started Sending discover... Sending discover... Sending discover... No lease, failing

on the logs of the instances.

But they cant reach their external gateway on the router. This is what my Network Topology looks like:


There so much info i could include but It would make the post all cluttered. The port thats connecting the router to the external subnet shows down on the summy page, how do i make thing connection come up? Where should I begin to troubleshoot this?

The network labeled public_network is set to external.

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I should mention that i can ping the internal network gateway of from the instances, but not the external gateway ip which is 74.xx.xx.xx.

techistheway gravatar imagetechistheway ( 2013-12-17 05:31:06 -0600 )edit

I will need more information to help. Are you using gre/vxlan or vlans? What plugin are you using (OVS, ML2)? Please post you conf files for the plugin, neutron.conf, l3_agent.ini, dhcp_agent.ini (please post them without the comments in them for brevity).

SamYaple gravatar imageSamYaple ( 2013-12-20 10:30:25 -0600 )edit

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answered 2013-12-30 14:44:37 -0600

Cristi Falcas gravatar image
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How can we get in touch cristi? I'm from Bucuresti and i have 6 servers for openstack deployment and i could really use your help! Multumesc!

capsali gravatar imagecapsali ( 2014-01-27 07:29:35 -0600 )edit

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Asked: 2013-12-17 05:29:07 -0600

Seen: 147 times

Last updated: Dec 30 '13