[Openstack] havana dhcp issue

Rami Vaknin rvaknin at redhat.com
Fri Nov 8 22:07:35 UTC 2013


On 11/08/2013 11:35 PM, Paras pradhan wrote:
> Hi,
>
> I gpt an instance UP but it doesnot get an IP address. neutron 
> agent-list lists DHCP agent happy. While booting I see cirros stuck at 
> sending discover... multiple times. dnsmasq process is running. how do 
> i debug?

I would start with:
* ps -efl | grep dnsmasq | grep -v grep - to verify that the dnsmasq 
process is running, you can also check the conf file appeas in this output
* ip netns - to get the list of namespaces
* ip netns exec <the_right_dhcp_namespace_name> tcpdump -i any ... - to 
look for the dhcp offer or arp issues
* ping each other - instance to dhcp address, and vice versa (the second 
one should be done from within the namespace)

>
> Thanks
>
>
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-- 

Thanks,

Rami Vaknin, QE @ Red Hat, TLV, IL.

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