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    <p>The two most likely causes of munge complaints:</p>
    <p>1. Different keys in /etc/munge/munge.key<br>
      2. Clocks out of sync on the nodes in question<br>
    </p>
    <p>Andy<br>
    </p>
    <br>
    <div class="moz-cite-prefix">On 05/07/2018 03:50 PM, Eric F. Alemany
      wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:BA7B27BD-134B-4BF4-83DB-47395A399C0D@stanford.edu">
      <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
      Greetings,
      <div class=""><br class="">
      </div>
      <div class="">Reminder: i am new to SLURM.</div>
      <div class=""><br class="">
      </div>
      <div class="">When i execute  “sinfo” my nodes are down.</div>
      <div class=""><br class="">
      </div>
      <div class="">
        <div style="margin: 0px; font-size: 11px; line-height: normal;
          font-family: Menlo; background-color: rgb(255, 255, 255);"
          class="">
          <span style="font-variant-ligatures: no-common-ligatures"
            class="">sinfo</span></div>
        <div style="margin: 0px; font-size: 11px; line-height: normal;
          font-family: Menlo; background-color: rgb(255, 255, 255);"
          class="">
          <span style="font-variant-ligatures: no-common-ligatures"
            class="">PARTITION AVAIL  TIMELIMIT  NODES  STATE NODELIST</span></div>
        <div style="margin: 0px; font-size: 11px; line-height: normal;
          font-family: Menlo; background-color: rgb(255, 255, 255);"
          class="">
          <span style="font-variant-ligatures: no-common-ligatures"
            class="">debug*       up   infinite      4  down*
            radonc[01-04]</span></div>
      </div>
      <div class=""><br class="">
      </div>
      <div class="">This is what i have done so far and nothing has
        helped. The nodes are in “idle” state for 2-3 minutes and then
        there are “down” again.</div>
      <div class=""><br class="">
      </div>
      <div class="">
        <div style="margin: 0px; line-height: normal;" class=""><span
            style="font-kerning: none" class="">systemctl restart
            slurmd    on all nodes</span></div>
        <div style="margin: 0px; line-height: normal; min-height: 14px;"
          class=""><span style="font-kerning: none" class=""></span><br
            class="">
        </div>
        <div style="margin: 0px; line-height: normal;" class=""><span
            style="font-kerning: none" class="">systemctl restart
            slurmctld  on master</span></div>
        <div style="margin: 0px; line-height: normal; min-height: 14px;"
          class=""><span style="font-kerning: none" class=""></span><br
            class="">
        </div>
        <div style="margin: 0px; line-height: normal;" class=""><span
            style="font-kerning: none" class="">scontrol update
            node=radonc[01-04] state=UNDRAIN</span></div>
      </div>
      <div style="margin: 0px; line-height: normal;" class=""><span
          style="font-kerning: none" class=""><br class="">
        </span></div>
      <div style="margin: 0px; line-height: normal;" class=""><span
          style="font-kerning: none" class="">scontrol update
          node=radonc[01-04] state=IDLE</span></div>
      <div style="margin: 0px; line-height: normal;" class=""><span
          style="font-kerning: none" class=""><br class="">
        </span></div>
      <div class=""><br class="">
      </div>
      <div class=""><br class="">
      </div>
      <div class="">I looked at the log file in <span style="color:
          rgb(34, 34, 34); background-color: rgb(247, 247, 247);"
          class="">/var/log/</span><span class="skimlinks-unlinked"
          style="color: rgb(34, 34, 34); border: 0px; margin: 0px;
          padding: 0px; vertical-align: baseline;">SlurmdLogFile.log
           and saw some “munge decode failed: Invalid credential”</span></div>
      <div class=""><span class="skimlinks-unlinked" style="color:
          rgb(34, 34, 34); border: 0px; margin: 0px; padding: 0px;
          vertical-align: baseline;"><br class="">
        </span></div>
      <div class=""><span class="skimlinks-unlinked" style="color:
          rgb(34, 34, 34); border: 0px; margin: 0px; padding: 0px;
          vertical-align: baseline;">
          <div style="margin: 0px; font-size: 11px; line-height: normal;
            font-family: Menlo; color: rgb(0, 0, 0); background-color:
            rgb(255, 255, 255);" class="">
            <span style="font-variant-ligatures: no-common-ligatures"
              class="">[2018-05-07T12:37:20.028] error:
              slurm_unpack_received_msg:
              MESSAGE_NODE_REGISTRATION_STATUS has authentication error:
              Invalid credential </span></div>
          <div style="margin: 0px; font-size: 11px; line-height: normal;
            font-family: Menlo; color: rgb(0, 0, 0); background-color:
            rgb(255, 255, 255);" class="">
            <span style="font-variant-ligatures: no-common-ligatures"
              class="">[2018-05-07T12:37:20.028] error:
              slurm_unpack_received_msg: Protocol authentication error</span></div>
          <div style="margin: 0px; font-size: 11px; line-height: normal;
            font-family: Menlo; color: rgb(0, 0, 0); background-color:
            rgb(255, 255, 255);" class="">
            <span style="font-variant-ligatures: no-common-ligatures"
              class="">[2018-05-07T12:37:20.028] error: Munge decode
              failed: Invalid credential</span></div>
          <div style="margin: 0px; font-size: 11px; line-height: normal;
            font-family: Menlo; color: rgb(0, 0, 0); background-color:
            rgb(255, 255, 255);" class="">
            <span style="font-variant-ligatures: no-common-ligatures"
              class="">[2018-05-07T12:37:20.028] error:
              slurm_unpack_received_msg:
              MESSAGE_NODE_REGISTRATION_STATUS has authentication error:
              Invalid credential </span></div>
          <div style="margin: 0px; font-size: 11px; line-height: normal;
            font-family: Menlo; color: rgb(0, 0, 0); background-color:
            rgb(255, 255, 255);" class="">
            <span style="font-variant-ligatures: no-common-ligatures"
              class="">[2018-05-07T12:37:20.028] error:
              slurm_unpack_received_msg: Protocol authentication error</span></div>
          <div style="margin: 0px; font-size: 11px; line-height: normal;
            font-family: Menlo; color: rgb(0, 0, 0); background-color:
            rgb(255, 255, 255);" class="">
            <span style="font-variant-ligatures: no-common-ligatures"
              class="">[2018-05-07T12:37:20.038] error:
              slurm_receive_msg [10.112.0.14:42140]: Unspecified error</span></div>
          <div style="margin: 0px; font-size: 11px; line-height: normal;
            font-family: Menlo; color: rgb(0, 0, 0); background-color:
            rgb(255, 255, 255);" class="">
            <span style="font-variant-ligatures: no-common-ligatures"
              class="">[2018-05-07T12:37:20.038] error:
              slurm_receive_msg [10.112.0.5:34752]: Unspecified error</span></div>
          <div style="margin: 0px; font-size: 11px; line-height: normal;
            font-family: Menlo; color: rgb(0, 0, 0); background-color:
            rgb(255, 255, 255);" class="">
            <span style="font-variant-ligatures: no-common-ligatures"
              class="">[2018-05-07T12:37:20.038] error:
              slurm_receive_msg [10.112.0.6:46746]: Unspecified error</span></div>
          <div style="margin: 0px; font-size: 11px; line-height: normal;
            font-family: Menlo; color: rgb(0, 0, 0); background-color:
            rgb(255, 255, 255);" class="">
            <span style="font-variant-ligatures: no-common-ligatures"
              class="">[2018-05-07T12:37:20.039] error:
              slurm_receive_msg [10.112.0.16:50788]: Unspecified error</span></div>
        </span></div>
      <div class=""><br class="">
      </div>
      <div class=""><br class="">
      </div>
      <div class="">I ran the following command on all nodes (including
        master/headnode) and got “Success”</div>
      <div class=""><br class="">
      </div>
      <div class="">
        <div style="margin: 0px; font-size: 11px; line-height: normal;
          font-family: Menlo; background-color: rgb(255, 255, 255);"
          class="">
          <span style="font-variant-ligatures: no-common-ligatures"
            class=""> munge -n | unmunge | grep STATUS</span></div>
        <div style="margin: 0px; font-size: 11px; line-height: normal;
          font-family: Menlo; background-color: rgb(255, 255, 255);"
          class="">
          <span style="font-variant-ligatures: no-common-ligatures"
            class=""><b class="">STATUS</b>:           Success (0)</span></div>
      </div>
      <div class=""><br class="">
      </div>
      <div class=""><br class="">
      </div>
      <div class="">How can I fix this problem?</div>
      <div class=""><br class="">
      </div>
      <div class=""><br class="">
      </div>
      <div class="">Thank you in advance for all your help.</div>
      <div class=""><br class="">
      </div>
      <div class="">Eric</div>
      <div class=""><br class="">
      </div>
      <div class=""><br class="">
      </div>
      <div class="">
        <div class="">
          <div style="color: rgb(0, 0, 0); letter-spacing: normal;
            orphans: auto; text-align: start; text-indent: 0px;
            text-transform: none; white-space: normal; widows: auto;
            word-spacing: 0px; -webkit-text-stroke-width: 0px;
            word-wrap: break-word; -webkit-nbsp-mode: space;
            -webkit-line-break: after-white-space;" class="">
            <div style="color: rgb(0, 0, 0); letter-spacing: normal;
              orphans: auto; text-align: start; text-indent: 0px;
              text-transform: none; white-space: normal; widows: auto;
              word-spacing: 0px; -webkit-text-stroke-width: 0px;
              word-wrap: break-word; -webkit-nbsp-mode: space;
              -webkit-line-break: after-white-space;" class="">
              <div style="text-align: -webkit-auto; orphans: 2; widows:
                2; word-wrap: break-word; -webkit-nbsp-mode: space;
                -webkit-line-break: after-white-space;" class="">
                <div style="orphans: auto; widows: auto;" class=""><span
                    style="text-align: -webkit-auto; background-color:
                    rgba(255, 255, 255, 0);" class="">_____________________________________________________________________________________________________</span></div>
                <div style="orphans: auto; widows: auto;" class=""><span
                    style="background-color: rgba(255, 255, 255, 0);"
                    class=""><br class="">
                  </span></div>
                <span style="background-color: rgba(255, 255, 255, 0);"
                  class=""><b class="">
                    <div style="orphans: auto; widows: auto;" class=""><b
                        style="text-align: -webkit-auto;" class="">Eric
                        F.  Alemany</b></div>
                  </b>
                  <div style="orphans: auto; widows: auto;" class=""><i
                      style="text-align: -webkit-auto;" class="">System
                      Administrator for Research</i></div>
                </span>
                <div style="orphans: auto; widows: auto;" class=""><span
                    style="background-color: rgba(255, 255, 255, 0);"
                    class=""><br class="">
                  </span></div>
                <div style="orphans: auto; widows: auto;" class=""><span
                    style="text-align: -webkit-auto; background-color:
                    rgba(255, 255, 255, 0);" class="">Division of
                    Radiation & Cancer  Biology</span></div>
                <div style="orphans: auto; widows: auto;" class=""><span
                    style="text-align: -webkit-auto; background-color:
                    rgba(255, 255, 255, 0);" class="">Department of
                    Radiation Oncology</span></div>
                <div style="orphans: auto; widows: auto;" class=""><span
                    style="background-color: rgba(255, 255, 255, 0);"
                    class=""><br class="">
                  </span></div>
                <div style="orphans: auto; widows: auto;" class=""><span
                    style="text-align: -webkit-auto; background-color:
                    rgba(255, 255, 255, 0);" class="">Stanford
                    University School of Medicine</span></div>
                <div style="orphans: auto; widows: auto;" class=""><span
                    style="text-align: -webkit-auto; background-color:
                    rgba(255, 255, 255, 0);" class="">Stanford,
                    California 94305</span></div>
                <div style="orphans: auto; widows: auto;" class=""><span
                    style="background-color: rgba(255, 255, 255, 0);"
                    class=""><br class="">
                  </span></div>
                <div style="orphans: auto; widows: auto;" class=""><span
                    style="background-color: rgba(255, 255, 255, 0);"
                    class=""><font style="text-align: -webkit-auto;"
                      class="">Tel:</font><a href="tel:1-650-498-7969"
                      x-apple-data-detectors="true"
                      x-apple-data-detectors-type="telephone"
                      x-apple-data-detectors-result="1"
                      style="text-align: -webkit-auto;" class=""
                      moz-do-not-send="true">1-650-498-7969</a><font
                      style="text-align: -webkit-auto;" class="">  No
                      Texting</font></span></div>
                <div style="orphans: auto; widows: auto;" class=""><span
                    style="background-color: rgba(255, 255, 255, 0);"
                    class=""><font style="text-align: -webkit-auto;"
                      class="">Fax:</font><a href="tel:1-650-723-7382"
                      x-apple-data-detectors="true"
                      x-apple-data-detectors-type="telephone"
                      x-apple-data-detectors-result="2"
                      style="text-align: -webkit-auto;" class=""
                      moz-do-not-send="true">1-650-723-7382</a></span></div>
                <div style="orphans: auto; widows: auto;" class=""><br
                    class="">
                </div>
              </div>
              <div style="word-wrap: break-word; -webkit-nbsp-mode:
                space; -webkit-line-break: after-white-space;" class="">
              </div>
            </div>
          </div>
          <br class="Apple-interchange-newline">
        </div>
        <br class="">
      </div>
    </blockquote>
    <br>
    <pre class="moz-signature" cols="72">-- 
Andy Riebs
<a class="moz-txt-link-abbreviated" href="mailto:andy.riebs@hpe.com">andy.riebs@hpe.com</a>
Hewlett-Packard Enterprise
High Performance Computing Software Engineering
+1 404 648 9024
My opinions are not necessarily those of HPE
    May the source be with you!
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