Couldn't find any PingAck's in the syslog - what else could have caused the split brain?<br><br>I posted the results of the log file search here: <a href="http://pastie.org/3400863">http://pastie.org/3400863</a><br>
<br>DRBD replication is running over dedicated NIC's via a switch which runs the internal subnet for the web and database servers. I don't have any fencing in place...."FLAME!" but am looking into it right now. All I can say is I'm really happy this happened now - the site is scheduled to go live in a few hours. I reconfigured the load balancer not to route any incoming requests to the secondary node until this is sorted. <br>
<br>Thanks<br><br>L<br><br><br><br><div class="gmail_quote">On 17 February 2012 13:35, David Coulson <span dir="ltr"><<a href="mailto:david@davidcoulson.net">david@davidcoulson.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im"><br>
<br>
On 2/17/12 6:27 AM, Felix Frank wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
More specifically: You're running dual-primary. That means *any* hiccup<br>
in your replication link will instantly split-brain your cluster as far<br>
as DRBD is concerned.<br>
</blockquote></div>
Agreed - Searching for PingAck in syslog is my lazy way of finding out when it actually broke itself :-)<span class="HOEnZb"><font color="#888888"><br>
<br>
David</font></span><div class="HOEnZb"><div class="h5"><br>
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