<div dir="ltr">Thanks Andreas for your kind answer, I'll add this to my test battery.<div><br></div><div>Also, my other question, is it a good idea to close the corosync port? Should corosync behave in a expected way? I am getting odd behaviors on this one, but not sure if where to put the blame.</div>

<div><br></div><div>Thanks in advance.</div></div><div class="gmail_extra"><br clear="all"><div><div dir="ltr">Jacobo García López de Araujo<div><a href="http://thebourbaki.com" target="_blank">http://thebourbaki.com</a> | <a href="http://twitter.com/clapkent" target="_blank">http://twitter.com/clapkent</a> <br>

</div></div></div>
<br><br><div class="gmail_quote">On Thu, Jul 11, 2013 at 8:39 PM, Andreas Mock <span dir="ltr"><<a href="mailto:andreas.mock@web.de" target="_blank">andreas.mock@web.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

<div lang="DE" link="blue" vlink="purple"><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Hi Jacobo,<u></u><u></u></span></p><p class="MsoNormal">

<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">one very interesting thing is missing.<u></u><u></u></span></p>

<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Overload the node. Make a programm/script which generates<u></u><u></u></span></p><p class="MsoNormal">

<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">many IO-operations, many flushes and meanwhile requesting<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">more and more memory from the OS until swapping begins.<u></u><u></u></span></p>

<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Ohhh, yes, swapping and IO is nice…<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>

<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">…then you can prove your monitor and stop action timeouts…  ;-)<u></u><u></u></span></p><p class="MsoNormal">

<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Best regards<u></u><u></u></span></p>

<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Andreas Mock<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>

<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Von:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Jacobo García [mailto:<a href="mailto:jacobo.garcia@gmail.com" target="_blank">jacobo.garcia@gmail.com</a>] <br>

<b>Gesendet:</b> Donnerstag, 11. Juli 2013 19:14<br><b>An:</b> <a href="mailto:pacemaker@oss.clusterlabs.org" target="_blank">pacemaker@oss.clusterlabs.org</a><br><b>Betreff:</b> [Pacemaker] Simulating that a node is down.<u></u><u></u></span></p>

<p class="MsoNormal"><u></u> <u></u></p><div><div class="im"><div><p class="MsoNormal">Hello,<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">I am looking for different ways of testing that a node is down. I am finding a strange behavior with one of them (closing with IPtables the UDP communication port). I would like to know if closing the port is a recommended way of achieving my testing purposes. <u></u><u></u></p>

</div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Also I would like to know other ways of testing apart from the ones compiled in the list below:<u></u><u></u></p></div><div><p class="MsoNormal">

<u></u> <u></u></p></div></div><div><p class="MsoNormal" style="margin-left:0cm;line-height:15.0pt;background:#fbfbfb"><u></u><span style="font-size:9.5pt;font-family:"Helvetica","sans-serif";color:#333333"><span>1.<span style="font:7.0pt "Times New Roman"">     </span></span></span><u></u><span style="font-size:9.5pt;font-family:"Helvetica","sans-serif";color:#333333">Stopping corosync.<u></u><u></u></span></p>

<p class="MsoNormal" style="margin-left:0cm;line-height:15.0pt;background:#fbfbfb"><u></u><span style="font-size:9.5pt;font-family:"Helvetica","sans-serif";color:#333333"><span>2.<span style="font:7.0pt "Times New Roman"">     </span></span></span><u></u><span style="font-size:9.5pt;font-family:"Helvetica","sans-serif";color:#333333">Shutting down the node.<u></u><u></u></span></p>

<p class="MsoNormal" style="margin-left:0cm;line-height:15.0pt;background:#fbfbfb"><u></u><span style="font-size:9.5pt;font-family:"Helvetica","sans-serif";color:#333333"><span>3.<span style="font:7.0pt "Times New Roman"">     </span></span></span><u></u><span style="font-size:9.5pt;font-family:"Helvetica","sans-serif";color:#333333">Shutting down the eth0 interface.<u></u><u></u></span></p>

<p class="MsoNormal" style="margin-left:0cm;line-height:15.0pt;background:#fbfbfb"><u></u><span style="font-size:9.5pt;font-family:"Helvetica","sans-serif";color:#333333"><span>4.<span style="font:7.0pt "Times New Roman"">     </span></span></span><u></u><span style="font-size:9.5pt;font-family:"Helvetica","sans-serif";color:#333333">Killing corosync process.<u></u><u></u></span></p>

<p class="MsoNormal" style="margin-left:0cm;line-height:15.0pt;background:#fbfbfb"><u></u><span style="font-size:9.5pt;font-family:"Helvetica","sans-serif";color:#333333"><span>5.<span style="font:7.0pt "Times New Roman"">     </span></span></span><u></u><span style="font-size:9.5pt;font-family:"Helvetica","sans-serif";color:#333333">Closing the corosync communication port.<u></u><u></u></span></p>

</div><div class="im"><div><p class="MsoNormal">Thanks,<u></u><u></u></p></div><p class="MsoNormal"><br clear="all"><u></u><u></u></p><div><div><p class="MsoNormal">Jacobo García López de Araujo<u></u><u></u></p><div><p class="MsoNormal">

<u></u> <u></u></p></div></div></div></div></div></div></div><br>_______________________________________________<br>
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