<p>Thanks for the ideas! They are cheap clone servers using Intel® Server Board S5520HC with 48Gb of RAM. </p>
<p>-The nodes simply reboot, without any interesting logs. Not all at the same time.</p>
<p>-There's no automatic updates or anything like it.</p>
<p>-I don't think overheating is the problem, because they reboot early in the morning when they have no load at all. They usually reboot around 03:00 to 05:00 AM.</p>
<p>I had no idea about this bmc thing Ill check it out.</p>
<div class="gmail_quote">2014-07-24 12:09 GMT-03:00 Arne Wiebalck <span dir="ltr"><<a href="mailto:Arne.Wiebalck@cern.ch" target="_blank">Arne.Wiebalck@cern.ch</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
Your compute nodes reboot or are shut off?<br>
<br>
I am currently looking at some cases where VMs seem to spontaneously shut themselves<br>
off. At least from the nova logs’ perspective there is no difference to a normal shutdown,<br>
VM owners however confirm that they did not touch their VMs. So far I was unable to<br>
explain this.<br>
<br>
This is with Havana on a RHEL6 derivative, though.<br>
<br>
Cheers,<br>
Arne<br>
<br>
--<br>
Arne Wiebalck<br>
CERN IT<br>
<div><div><br>
On 24 Jul 2014, at 16:46, Juan José Pavlik Salles <<a href="mailto:jjpavlik@gmail.com" target="_blank">jjpavlik@gmail.com</a>> wrote:<br>
<br>
> Hello guys, We have got a small Grizzly cloud running since the begging of 2013 with Ubuntu 12.04. 2 compute nodes, a storage node and a controller, nothing too fancy. Everything works just fine, but... the compute nodes reboot themselves periodically, sometimes every 2 weeks, some times once a month. I've done almost everything I can think of: memory checks, analysed the logs, moved all the VMs to one node, and I just can't find the problem.<br>
><br>
> Have you ever heard this kind of behaviour on compute nodes? Any ideas where I should look for the problem?<br>
><br>
> Thanks in advance.<br>
><br>
> --<br>
> Pavlik Salles Juan José<br>
> Blog - <a href="http://viviendolared.blogspot.com" target="_blank">http://viviendolared.blogspot.com</a><br>
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<br>
</blockquote></div><br><br clear="all"><div><br></div>-- <br><div dir="ltr">Pavlik Salles Juan José<div>Blog - <a href="http://viviendolared.blogspot.com" target="_blank">http://viviendolared.blogspot.com</a></div></div>