Open Stack

Chen ,

    I think ur packets is getting dropped. U can verify this by just
checking the packets coming from compute node hitting which of the rules in
br-int.


On Wed, Feb 12, 2014 at 10:56 AM, Robert Collins
<robertc at robertcollins.net>wrote:

> Check the outbound ofctl rules on your hypervisor nodes. If they
> aren't tagging traffic properly, it won't be processed by the incoming
> gre rules and you'll see the symptoms you have.
>
> On 8 February 2014 05:41, Chris Baker <openstack2014 at qq.com> wrote:
> > Hi guys,
> >
> > My havana installation has 3 nodes:
> > control node, runs keystone APIs and neutron server;
> > network node, runs l3, dhcp, metadata, ovs agents; with VLAN mode
> > compute node, runs nova compute and ovs agents;
> >
> > repo from http://repos.fedorapeople.org/repos/openstack/openstack-havana
> ,
> > and the os gets updated well with latest kernel.
> >
> >
> > Currently my VM can't get dhcp ack from network node.
> > Based the topology picture for the package flow:
> >
> http://docs.openstack.org/admin-guide-cloud/content/figures/10/a/common/figures/under-the-hood-scenario-1-ovs-network.png
> >
> > With the tcpdump result on both network and compute node, it says the
> dhcp
> > request successfully leaves compute node, and it can reach the
> "int-br-eth1"
> > of network node, but not the next step br "br-int", so the dnsmasq would
> not
> > able to ack. I think this is the problem why I can't get dhcp ipaddr.
> >
> > # uname -r
> > 2.6.32-358.123.2.openstack.el6.x86_64
> >
> > # ip netns  (should we say namespace works well?)
> > qdhcp-11f3adc1-6a2e-429b-9679-b565347e2f74
> > qdhcp-4aaa7c19-7864-4b17-aebc-d6aa354d4cd5
> > qdhcp-285e259e-e3ec-4149-81db-8e94e1713aa2
> > qdhcp-4044cdf0-717b-4628-9ce0-a9ff49533d8f
> > qrouter-76c9b884-5928-42f4-a016-afab1b72066b
> >
> > Anyone can help where/which section I should check for the issue next? or
> > let me know if other info is needed.
> > Thanks a lot.
> >
> > Chris
> >
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>
>
>
> --
> Robert Collins <rbtcollins at hp.com>
> Distinguished Technologist
> HP Converged Cloud
>
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