[Openstack] havana dhcp issue
rvaknin at redhat.com
Fri Nov 8 22:26:59 UTC 2013
On 11/09/2013 12:18 AM, Paras pradhan wrote:
> dnsmaq is running, ip netns doesn't return anything.
Empty output from "ip netns" can be either not using namespaces (run
grep "use_namespaces /etc/neutron/l3_agent.ini" to find out) or using
wrong iproute package.
Could you please also check what does tcpdump report? could you see the
discover on the dhcp nic (when using ovs it's a tapxxxxxxxx-xx nic)?
could you see an offer sent from that nic?
> On Fri, Nov 8, 2013 at 4:07 PM, Rami Vaknin <rvaknin at redhat.com
> <mailto:rvaknin at redhat.com>> wrote:
> On 11/08/2013 11:35 PM, Paras pradhan wrote:
>> 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)
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> Rami Vaknin, QE @ Red Hat, TLV, IL.
Rami Vaknin, QE @ Red Hat, TLV, IL.
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