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    <p>thanks for the response, as suggested I have tried stable/queens
      but still getting the same error.<br>
      Few observations <br>
    </p>
    <ol>
      <li>services rngd.service  and <a class="moz-txt-link-abbreviated" href="mailto:devstack@n-cpu.service">devstack@n-cpu.service</a> are failed
        to start.</li>
      <li>processor family - AMD Phenom(tm) II X4 955 Processor</li>
      <li>openvswitch.service is in exited state<br>
      </li>
    </ol>
    <br>
    please find attached <br>
    <ol>
      <li>output of<b> journalctl-n-cpu</b></li>
      <li>output of systemctl list-units</li>
      <li>/etc/nova/nova.conf <br>
      </li>
      <li>/proc/cpuinfo</li>
    </ol>
    <br>
    <div class="moz-cite-prefix">On 03/22/2018 05:10 AM, Bernd Bausch
      wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:011f01d3c16d$f75d9de0$e618d9a0$@gmail.com">
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      <div class="WordSection1">
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">In
            my experience, a DevStack cloned from the master branch
            (which is the default) may occasionally run into
            inconsistencies such as incompatible library versions. Try a
            stable branch e.g. </span><span
            style="font-size:10.0pt;font-family:Consolas">git clone ...
            –b stable/queens</span><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">.
            Or just clone the master again later.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Your
            local.conf may also be at the origin of this error. <o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">The
            full stack trace with a little bit of context may also be
            helpful (</span><span
            style="font-size:10.0pt;font-family:Consolas">journalctl –u
            devstack@n-cpu</span><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">).
            It might contain other errors or warnings that provide a
            clue.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Also
            look for Nova-related errors or warnings in the stack.sh log
            file.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">                                                                                                                                                                   
            <o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Bernd.<o:p></o:p></span></p>
        <p class="MsoNormal"><a name="_MailEndCompose"
            moz-do-not-send="true"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></a></p>
        <p class="MsoNormal"><b><span
              style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">
            Sagar Kohli [<a class="moz-txt-link-freetext" href="mailto:sagar.kohli@nic.in">mailto:sagar.kohli@nic.in</a>] <br>
            <b>Sent:</b> Wednesday, March 21, 2018 6:08 PM<br>
            <b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:openstack@lists.openstack.org">openstack@lists.openstack.org</a><br>
            <b>Subject:</b> [Openstack] Unable to start
            <a class="moz-txt-link-abbreviated" href="mailto:devstack@n-cpu.service">devstack@n-cpu.service</a><o:p></o:p></span></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal" style="margin-bottom:12.0pt">I am trying to
          install devstack on my fresh centos7 machine. All went well.<br>
          But i am not able to get service  <a
            href="mailto:devstack@n-cpu.service" moz-do-not-send="true">devstack@n-cpu.service</a>
          up. following is the output of <span
            style="font-size:10.0pt;color:lightcoral;background:white">systemctl
            status <a href="mailto:devstack@n-cpu.service"
              moz-do-not-send="true">devstack@n-cpu.service</a></span><o:p></o:p></p>
        <blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
          <p class="MsoNormal"><span
              style="font-size:10.0pt;color:lightcoral"> <span
                style="background:white">sudo systemctl status <a
                  href="mailto:devstack@n-cpu.service"
                  moz-do-not-send="true">devstack@n-cpu.service</a><br>
                ● <a href="mailto:devstack@n-cpu.service"
                  moz-do-not-send="true">devstack@n-cpu.service</a> -
                Devstack <a href="mailto:devstack@n-cpu.service"
                  moz-do-not-send="true">devstack@n-cpu.service</a><br>
                   Loaded: loaded (<a
                  href="mailto:/etc/systemd/system/devstack@n-cpu.service"
                  moz-do-not-send="true">/etc/systemd/system/devstack@n-cpu.service</a>;
                enabled; vendor preset: disabled)<br>
                   Active: failed (Result: exit-code) since Wed
                2018-03-21 15:22:55 EDT; 10h left<br>
                  Process: 4252 ExecStart=/usr/bin/nova-compute
                --config-file /etc/nova/nova-cpu.conf (code=exited,
                status=1/FAILURE)<br>
                 Main PID: 4252 (code=exited, status=1/FAILURE)<br>
                <br>
                Mar 21 15:22:55 localhost.localdomain
                nova-compute[4252]: ERROR nova     from
                paramiko.auth_handler import AuthHandler<br>
                Mar 21 15:22:55 localhost.localdomain
                nova-compute[4252]: ERROR nova   File
                "/usr/lib/python2.7/site-packages/paramiko/auth_handler.py",
                lin...module><br>
                Mar 21 15:22:55 localhost.localdomain
                nova-compute[4252]: ERROR nova     from paramiko.ssh_gss
                import GSSAuth, GSS_EXCEPTIONS<br>
                Mar 21 15:22:55 localhost.localdomain
                nova-compute[4252]: ERROR nova   File
                "/usr/lib/python2.7/site-packages/paramiko/ssh_gss.py",
                line 54,...module><br>
                Mar 21 15:22:55 localhost.localdomain
                nova-compute[4252]: ERROR nova     GSS_EXCEPTIONS =
                (gssapi.GSSException,)<br>
                Mar 21 15:22:55 localhost.localdomain
                nova-compute[4252]: ERROR nova AttributeError: 'module'
                object has no attribute 'GSSException'<br>
                Mar 21 15:22:55 localhost.localdomain
                nova-compute[4252]: ERROR nova <br>
                Mar 21 15:22:55 localhost.localdomain systemd[1]: <a
                  href="mailto:devstack@n-cpu.service"
                  moz-do-not-send="true">devstack@n-cpu.service</a>:
                main process exited, code=exited, status=1/FAILURE<br>
                Mar 21 15:22:55 localhost.localdomain systemd[1]: Unit <a
                  href="mailto:devstack@n-cpu.service"
                  moz-do-not-send="true">devstack@n-cpu.service</a>
                entered failed state.<br>
                Mar 21 15:22:55 localhost.localdomain systemd[1]: <a
                  href="mailto:devstack@n-cpu.service"
                  moz-do-not-send="true">devstack@n-cpu.service</a>
                failed.<br>
                Hint: Some lines were ellipsized, use -l to show in
                full.</span></span><o:p></o:p></p>
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