<div dir="ltr"><div><div><div>U can try few things quickly.<br><br></div>a) Connectivity between ur compute node and n/w node. Check the interfaces.<br></div>b) Check the route entry.<br><br>Ur compute node can ping to n/w node. U can also chk the vlan tag settings on ovs bridge.<br>
</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Feb 7, 2014 at 10:11 PM, Chris Baker <span dir="ltr"><<a href="mailto:openstack2014@qq.com" target="_blank">openstack2014@qq.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div style="font-family:'lucida Grande',Verdana;line-height:23px">Hi guys,</div><div style="font-family:'lucida Grande',Verdana;line-height:23px">
<br></div><div style="font-family:'lucida Grande',Verdana;line-height:23px">My havana installation has 3 nodes:</div><div style="font-family:'lucida Grande',Verdana;line-height:23px">control node, runs keystone APIs and neutron server;</div>
<div style="font-family:'lucida Grande',Verdana;line-height:23px">network node, runs l3, dhcp, metadata, ovs agents; with VLAN mode</div><div style="font-family:'lucida Grande',Verdana;line-height:23px">compute node, runs nova compute and ovs agents;</div>
<div style="font-family:'lucida Grande',Verdana;line-height:23px"><br></div><div style="font-family:'lucida Grande',Verdana;line-height:23px">repo from <a href="http://repos.fedorapeople.org/repos/openstack/openstack-havana/" style="outline:none;color:rgb(30,84,148);line-height:1.5" target="_blank">http://repos.fedorapeople.org/repos/openstack/openstack-havana</a>, and the os gets updated well with latest kernel.</div>
<div style="font-family:'lucida Grande',Verdana;line-height:23px"><br></div><div style="font-family:'lucida Grande',Verdana;line-height:23px"><br>Currently my VM can't get dhcp ack from network node.</div>
<div style="font-family:'lucida Grande',Verdana;line-height:23px">Based the topology picture for the package flow:</div><div style="font-family:'lucida Grande',Verdana;line-height:23px"><a href="http://docs.openstack.org/admin-guide-cloud/content/figures/10/a/common/figures/under-the-hood-scenario-1-ovs-network.png" style="outline:none;color:rgb(30,84,148)" target="_blank">http://docs.<u></u>openstack.or<u></u>g/admin-guid<u></u>e-cloud/cont<u></u>ent/figures/<u></u>10/a/common/<u></u>figures/unde<u></u>r-the-hood-s<u></u>cenario-1-ov<u></u>s-network.pn<u></u>g</a></div>
<div style="font-family:'lucida Grande',Verdana;line-height:23px"><br></div><div style="font-family:'lucida Grande',Verdana;line-height:23px"><span style="line-height:1.5">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.</span></div>
<div style="font-family:'lucida Grande',Verdana;line-height:23px"><span style="line-height:1.5"><div><br></div><div># uname -r</div><div>2.6.32-358.123.2.openstack.el6.x86_64</div><div><br></div></span></div><div style="font-family:'lucida Grande',Verdana;line-height:23px">
<span style="line-height:1.5"><div># ip netns (should we say namespace works well?)</div><div>qdhcp-11f3adc1-6a2e-429b-9679-b565347e2f74</div><div>qdhcp-4aaa7c19-7864-4b17-aebc-d6aa354d4cd5</div><div>qdhcp-285e259e-e3ec-4149-81db-8e94e1713aa2</div>
<div>qdhcp-4044cdf0-717b-4628-9ce0-a9ff49533d8f</div><div>qrouter-76c9b884-5928-42f4-a016-afab1b72066b</div><div><br></div></span></div><div style="font-family:'lucida Grande',Verdana;line-height:23px">Anyone can help where/which section I should check for the issue next? or let me know if other info is needed.</div>
<div style="font-family:'lucida Grande',Verdana;line-height:23px"><span style="line-height:1.5">Thanks a lot.</span></div></div><span class="HOEnZb"><font color="#888888"><div style="font-family:'lucida Grande',Verdana;line-height:23px">
<span style="line-height:1.5"><br></span></div><div style="font-family:'lucida Grande',Verdana">Chris</div></font></span><br>_______________________________________________<br>
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