<span style="font-family:arial,helvetica,sans-serif"><font>Hi,<br><br>I have a 3 nodes Grizzly setup with one Controller, Network and Compute(KVM) node. I am using VLAN mode. It works fine most of the time. But occasionally when an instance is launched, the instance is unable to reach the external network. When this happens I see that the 'qr-xxxxx' interface is not created as shown below:<br>
<br>

</font></span><p class="MsoNormal"><span style="font-family:arial,helvetica,sans-serif"><font>root@openstack-dev-network#
ip netns exec qrouter-81c474cb-acad-42b4-bc78-875992fa33f6 route -n</font></span></p><span style="font-family:arial,helvetica,sans-serif"><font>

</font></span><p class="MsoNormal"><span style="font-family:arial,helvetica,sans-serif"><font>Kernel
IP routing table</font></span></p><span style="font-family:arial,helvetica,sans-serif"><font>

</font></span><p class="MsoNormal"><span style="font-family:arial,helvetica,sans-serif"><font>Destination<span>     </span>Gateway<span>         </span>Genmask<span>         </span>Flags Metric Ref<span>    </span>Use Iface</font></span></p>
<span style="font-family:arial,helvetica,sans-serif"><font>

</font></span><p class="MsoNormal"><span style="font-family:arial,helvetica,sans-serif"><font>0.0.0.0<span>         </span>10.5.60.1<span>       </span>0.0.0.0<span>         </span>UG<span>   
</span>0<span>      </span>0<span>        </span>0 qg-81e2a77d-71</font></span></p><span style="font-family:arial,helvetica,sans-serif"><font>

</font></span><p class="MsoNormal"><span style="font-family:arial,helvetica,sans-serif"><font>1.1.1.0
<span>  </span><span>      </span>0.0.0.0<span>         </span>255.255.252.0<span>   </span>U<span>    
</span>0<span>      </span>0<span>        </span>0 qg-81e2a77d-71</font></span></p><span style="font-family:arial,helvetica,sans-serif"><font>



</font></span><p class="MsoNormal"><span style="font-family:arial,helvetica,sans-serif"><font>root@openstack-dev-network
#</font></span></p><span style="font-family:arial,helvetica,sans-serif"><font>

<br>I see the following error in /var/log/quantum/openvswitch-agent.log<br><br>

</font></span><p class="MsoNormal" style="margin-left:40px"><span style="font-family:arial,helvetica,sans-serif"><font>Stderr:
'ovs-vsctl: no row "qr-fb582b82-f7" in table Interface\n'</font></span></p><div style="margin-left:40px">

</div><p class="MsoNormal" style="margin-left:40px"><span style="font-family:arial,helvetica,sans-serif"><font>2013-07-29
06:14:18<span>    </span>ERROR
[quantum.agent.linux.ovs_lib] Unable to execute ['ovs-vsctl', '--timeout=2',
'get', 'Interface', 'qr-a4f24e08-aa', 'external_ids']. Exception:</font></span></p><div style="margin-left:40px">

</div><p class="MsoNormal" style="margin-left:40px"><span style="font-family:arial,helvetica,sans-serif"><font>Command:
['sudo', '/usr/bin/quantum-rootwrap', '/etc/quantum/rootwrap.conf', 'ovs-vsctl',
'--timeout=2', 'get', 'Interface', 'qr-a4f24e08-aa', 'external_ids']</font></span></p><div style="margin-left:40px">

</div><p class="MsoNormal" style="margin-left:40px"><span style="font-family:arial,helvetica,sans-serif"><font>Exit
code: 1</font></span></p><div style="margin-left:40px">

</div><p class="MsoNormal" style="margin-left:40px"><span style="font-family:arial,helvetica,sans-serif"><font>Stdout:
''</font></span></p><div style="margin-left:40px">

</div><p class="MsoNormal" style="margin-left:40px"><span style="font-family:arial,helvetica,sans-serif"><font>Stderr:
'ovs-vsctl: no row "qr-a4f24e08-aa" in table Interface\n'</font></span></p><div style="margin-left:40px">

</div><p class="MsoNormal"><span style="font-family:arial,helvetica,sans-serif"><font><br><span style="color:rgb(96,96,255)"></span></font></span></p><p class="MsoNormal"><span style="font-family:arial,helvetica,sans-serif"><font>And on restarting the quantum services, the interface gets created and the instance is able to reach the external network.</font></span></p>
<p class="MsoNormal"><span style="font-family:arial,helvetica,sans-serif"><font><br></font></span></p><p class="MsoNormal"><span style="font-family:arial,helvetica,sans-serif"><font>root@openstack-dev-network:~# cd /etc/init.d/; for i in $( ls quantum-* ); do sudo service $i restart; done<br>
quantum-dhcp-agent stop/waiting<br>quantum-dhcp-agent start/running, process 20872<br>quantum-l3-agent stop/waiting<br>quantum-l3-agent start/running, process 20885<br>quantum-metadata-agent stop/waiting<br>quantum-metadata-agent start/running, process 20894<br>
quantum-plugin-openvswitch-agent stop/waiting<br>quantum-plugin-openvswitch-agent start/running, process 20903<br>root@openstack-dev-network:/etc/init.d# <br></font></span></p><p class="MsoNormal"><span style="font-family:arial,helvetica,sans-serif"><font><br>
<span style="color:rgb(96,96,255)"></span></font></span></p><p class="MsoNormal"></p><p class="MsoNormal">

</p><p class="MsoNormal"><span style="font-family:arial,helvetica,sans-serif"><font>root@openstack-dev-network#
ip netns exec qrouter-81c474cb-acad-42b4-bc78-875992fa33f6 route -n</font></span></p>

<p class="MsoNormal"><span style="font-family:arial,helvetica,sans-serif"><font>Kernel
IP routing table</font></span></p>

<p class="MsoNormal"><span style="font-family:arial,helvetica,sans-serif"><font>Destination<span>     </span>Gateway<span>         </span>Genmask<span>         </span>Flags Metric Ref<span>    </span>Use Iface</font></span></p>


<p class="MsoNormal"><span style="font-family:arial,helvetica,sans-serif"><font>0.0.0.0<span>         </span>10.5.60.1<span>       </span>0.0.0.0<span>         </span>UG<span>   
</span>0<span>      </span>0<span>        </span>0 qg-81e2a77d-71</font></span></p>

<p class="MsoNormal"><span style="font-family:arial,helvetica,sans-serif"><font>1.1.1.0
<span>  </span><span>      </span>0.0.0.0<span>         </span>255.255.252.0<span>   </span>U<span>    
</span>0<span>      </span>0<span>        </span>0 qg-81e2a77d-71</font></span></p>

<p class="MsoNormal"><span style="font-family:arial,helvetica,sans-serif"><font>192.168.3.0<span>     </span>0.0.0.0<span>         </span>255.255.255.0<span>   </span>U<span>    
</span>0<span>      </span>0<span>        </span>0 qr-a4f24e08-aa</font></span></p>

<p class="MsoNormal"><span style="font-family:arial,helvetica,sans-serif"><font>root@openstack-dev-network
#</font></span></p>

<p></p><p class="MsoNormal"><span style="font-family:arial,helvetica,sans-serif"><font> </font></span></p><span style="font-family:arial,helvetica,sans-serif"><font>

</font></span><p class="MsoNormal"><span style="font-family:arial,helvetica,sans-serif"><font>I do have the root_helper in /etc/quantum/plugins/openvswitch/ovs_quantum_plugin.ini.</font></span></p><p class="MsoNormal"><br>
<span style="font-family:arial,helvetica,sans-serif"></span></p><p class="MsoNormal"><span style="font-family:arial,helvetica,sans-serif"><font>Any help will be greatly appreciated.</font></span></p><p class="MsoNormal"><br>
<span style="font-family:arial,helvetica,sans-serif"></span></p><p class="MsoNormal"><span style="font-family:arial,helvetica,sans-serif"><font>Regards,</font></span></p><p class="MsoNormal"><span style="font-family:arial,helvetica,sans-serif"><font>Balu<br>
</font></span></p><span style="font-family:arial,helvetica,sans-serif"><font>

</font></span>