Sorry - probably should have replied this to the group:<br><br>---------- Forwarded message ----------<br><span class="gmail_quote">From: <b class="gmail_sendername">Bob Goldberg</b> <<a href="mailto:bobg.hahc@gmail.com">bobg.hahc@gmail.com</a>><br>
Date: Jul 21, 2008 1:41 PM<br>Subject: Re: [DRBD-user] Redundancy<br>To: "<a href="mailto:nathan@robotics.net">nathan@robotics.net</a>" <<a href="mailto:nathan@robotics.net">nathan@robotics.net</a>><br><br>
</span><span class="q">On 7/19/08, <b class="gmail_sendername"><a href="mailto:nathan@robotics.net" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">nathan@robotics.net</a></b> <<a href="mailto:nathan@robotics.net" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">nathan@robotics.net</a>> wrote:<div>
<span class="gmail_quote"></span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br>
Is it possible to specify more then one IP address in a DRBD config? I
just ran into a nasty split brain scenario that I did not think about.<br>
<br>
I am using infiniband between my two hosts and my infiniband cable was
disconnected. Cluster MANager was still running on the gigabit ethernet
interface, so nothing was fenced even tho DRBD was partitioned because
of lack of infiniband IPoIB interface.<br>
<br></blockquote></div><br></span>
FYI/FWIW:<br>
<br>
you can't do this with drbd - but you CAN if you're using HA (high availability).<br>
<br>
w/ HA, you basically have a cluster which can be addressed like:<br>
server 1: <a href="http://192.168.0.2" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">192.168.0.2</a><br>
server 2: <a href="http://192.168.0.3" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">192.168.0.3</a><br>
<br>
HA cluster (in HA's conf file) designates the above 2 servers can be addressed via:<br>
HAcluster: <a href="http://192.168.0.5" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">192.168.0.5</a><br>
<br>
so regardless of which server is up, and servicing your drbd partition,
the resource is addressed via the cluster's IP, not either of the
server's IP's.<br>
<br>
ie: mount 192.168.0.5:/drbdShare /mnt<br>
<br>
HTH - Bob<br>
<br>