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<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:ZH-CN">May be your bridges were deleted, what about ‘ovs-vsctl show’ command said?<o:p></o:p></span></p>
<p class="MsoNormal"><a name="_MailEndCompose"><span style="color:#1F497D;mso-fareast-language:ZH-CN"><o:p> </o:p></span></a></p>
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<p class="MsoNormal"><b><span style="mso-fareast-language:ZH-CN">From:</span></b><span style="mso-fareast-language:ZH-CN"> Narayanan, Krishnaprasad [mailto:narayana@uni-mainz.de]
<br>
<b>Sent:</b> Thursday, October 9, 2014 07:23<br>
<b>To:</b> 'openstack@lists.openstack.org'<br>
<b>Subject:</b> Re: [Openstack] Nova compute and network service are not starting after upgrading to Ubuntu 14.04<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="DE" style="color:#1F497D">Dear all,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">In continuation with my email below, can somebody suggest me the steps to recover / setup a VNIC that was deleted from the compute node after upgradation process.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">When I tried executing ifconfig –a “name of the virtual interface” on the compute node, I am getting an error which displays “No device found”.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="DE" style="color:#1F497D">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE" style="color:#1F497D">Krishnaprasad<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="mso-fareast-language:DE">From:</span></b><span style="mso-fareast-language:DE"> Narayanan, Krishnaprasad
<br>
<b>Sent:</b> Mittwoch, 8. Oktober 2014 18:11<br>
<b>To:</b> 'openstack@lists.openstack.org'<br>
<b>Subject:</b> Nova compute and service are not starting after upgrading to Ubuntu 14.04<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="DE"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="DE">Hallo all,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE"><o:p> </o:p></span></p>
<p class="MsoNormal">I upgraded the operating system of one of the compute nodes in our cloud infrastructure from Ubuntu 12.04 to 14.04 and after the upgradation, I found that the nova-compute and network service were not started. The network configuration
in our Havana setup is based on FlatDHCP manager. After the reboot process, I saw the nova-compute and network service was started but after a minute, they were stopped. When I executed “ps aux | grep nova” on the terminal, I saw a strange observation where
I found more than 10 process related to nova-api service. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The message in the nova-compute log is: “WARNING nova.virt.libvirt.driver [-] URI qemu:///system does not support events: Cannot write data: Broken pipe<o:p></o:p></p>
<p class="MsoNormal">2014-10-08 16:58:41.249 1968 ERROR nova.openstack.common.threadgroup [-] internal error: client socket is closed”.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The version of nova and nova-manage in the cloud controller and compute node are different. In the controller node, the nova version is 2.15.0 and nova-manage version is 2013.2.2 whereas on the compute node, their version is 2.17.0 and
is 2014.1.2<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Can I kindly know whether the problem is due to the following?<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">a)<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>The version mis-match of the nova components in the controller and compute node<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">b)<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Are there any configurations that are to be updated in the libvirt / qemu / nova / nova-compute?
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal">Krishnaprasad<o:p></o:p></p>
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