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<div dir="ltr" align="left"><span class="771502115-09122013"><font color="#0000ff" size="2" face="Arial">Hi Emmanuel,</font></span></div>
<div dir="ltr" align="left"><span class="771502115-09122013"><font color="#0000ff" size="2" face="Arial"></font></span> </div>
<div dir="ltr" align="left"><span class="771502115-09122013"><font color="#0000ff" size="2" face="Arial">thanks for the hint, reading (again) the chapter about resource stickiness, I see and understand</font></span></div>
<div dir="ltr" align="left"><span class="771502115-09122013"><font color="#0000ff" size="2" face="Arial">the difference :)</font></span></div>
<div dir="ltr" align="left"><span class="771502115-09122013"><font color="#0000ff" size="2" face="Arial"></font></span> </div>
<div dir="ltr" align="left"><span class="771502115-09122013"><font color="#0000ff" size="2" face="Arial">br,</font></span></div>
<div dir="ltr" align="left"><span class="771502115-09122013"><font color="#0000ff" size="2" face="Arial">christian</font></span></div>
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<font size="2" face="Tahoma"><b>Von:</b> emmanuel segura [mailto:emi2fast@gmail.com]
<br>
<b>Gesendet:</b> Montag, 09. Dezember 2013 16:12<br>
<b>An:</b> ms@sys4.de; The Pacemaker cluster resource manager<br>
<b>Betreff:</b> Re: [Pacemaker] WG: configuration of stonith<br>
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<div dir="ltr">I think they sould be<br>
<br>
pcs constraint location ipmi-fencing-sv2837 prefers sv2837=-INFINITY<br>
pcs constraint location ipmi-fencing-sv2836 prefers sv2836=-INFINITY<br>
<br>
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<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">2013/12/9 Michael Schwartzkopff <span dir="ltr"><<a href="mailto:ms@sys4.de" target="_blank">ms@sys4.de</a>></span><br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">
Am Montag, 9. Dezember 2013, 14:58:13 schrieben Sie:<br>
<div>
<div class="h5">> > > pcs stonith create ipmi-fencing-sv2837 fence_ipmilan<br>
> ><br>
> > pcmk_host_list="sv2837"<br>
> ><br>
> > > ipaddr=10.110.28.37 action="off" login=ipmi passwd=abc<br>
> ><br>
> > delay=15 op monitor<br>
> ><br>
> > > interval=60s pcs stonith create ipmi-fencing-sv2836 fence_ipmilan<br>
> > > pcmk_host_list="sv2836" ipaddr=10.110.28.36 action="off" login=ipmi<br>
> > > passwd=abc delay=15 op monitor interval=60s<br>
> > ><br>
> > > pcs property set stonith-enabled=true<br>
> > ><br>
> > > pcs constraint location ipmi-fencing-sv2837 prefers sv2836=INFINITY<br>
> > > pcs constraint location ipmi-fencing-sv2836 prefers sv2837=INFINITY<br>
> > ><br>
> > > pcs status<br>
> > > ....<br>
> > ><br>
> > > Full list of resources:<br>
> > > ClusterIP (ocf::heartbeat:IPaddr2): Started sv2836<br>
> > > FIXRoute (ocf::baader:FIXRoute): Started sv2836<br>
> ><br>
> > > ipmi-fencing-sv2837 (stonith:fence_ipmilan):<br>
> > Started sv2836<br>
> ><br>
> > > ipmi-fencing-sv2836 (stonith:fence_ipmilan):<br>
> > Started sv2837<br>
> ><br>
> > This is not optimal. Nothing prevents the resource, that can<br>
> > fence node sv2837<br>
> > to run on host sv2837. You just say, that it should run on<br>
> > node sv2836.<br>
> ><br>
> > Better would be something like<br>
> ><br>
> > crm configure location place-fencing-sv2837 -inf: sv2837<br>
> ><br>
> > or the equivalent in pcs.<br>
> ><br>
> > Greetings,<br>
><br>
> Hi Michael,<br>
><br>
> I thought that the lines above will do that:<br>
> > > pcs constraint location ipmi-fencing-sv2837 prefers sv2836=INFINITY<br>
> > > pcs constraint location ipmi-fencing-sv2836 prefers sv2837=INFINITY<br>
><br>
> Don't they?<br>
<br>
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I don't know pcs in depth and I could not find any detailed doc. So I stick<br>
with crmsh.<br>
<br>
As far as I can judge your lines above your tell the cluster, that the<br>
resource, that can fence node sv2836, gets INF points if it runs on node<br>
sv2837. But what happens if node sv2837 is down? Nothing prevents the resource<br>
starting on the node that it should fence. So if one node is down both fencing<br>
resources will run on the remaining node. No very nice.<br>
<br>
I suggest to assign -INF points to the resource that can fence node sv2836 if<br>
it runs on node sv2836. So it will run on sv2837. If that node is not<br>
available the resource cannot run. On the node (remaining) node sv2836 only<br>
the resource that can fence sv2837.<br>
<br>
For details see: <a href="http://clusterlabs.org/doc/crm_fencing.html" target="_blank">
http://clusterlabs.org/doc/crm_fencing.html</a><br>
<div class="HOEnZb">
<div class="h5"><br>
Mit freundlichen Grüßen,<br>
<br>
Michael Schwartzkopff<br>
<br>
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esta es mi vida e me la vivo hasta que dios quiera </div>
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