I have a production cluster, using two vm on esx cluster, for stonith i'm using sbd, everything work fine<br><br><br><div class="gmail_quote">2013/3/25 emmanuel segura <span dir="ltr"><<a href="mailto:emi2fast@gmail.com" target="_blank">emi2fast@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I have a production cluster, using two vm on esx cluster, for stonith i'm using sbd, everything work find<br><br><div class="gmail_quote">
2013/3/25 Angel L. Mateo <span dir="ltr"><<a href="mailto:amateo@um.es" target="_blank">amateo@um.es</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5">Hello,<br>
<br>
I am newbie with pacemaker (and, generally, with ha clusters). I have configured a two nodes cluster. Both nodes are virtual machines (vmware esx) and use a shared storage (provided by a SAN, although access to the SAN is from esx infrastructure and VM consider it as scsi disk). I have configured clvm so logical volumes are only active in one of the nodes.<br>
<br>
Now I need some help with the stonith configuration to avoid data corrumption. Since I'm using ESX virtual machines, I think I won't have any problem using external/vcenter stonith plugin to shutdown virtual machines.<br>
<br>
My problem is how to avoid split brain situation with this configuration, without configuring a 3rd node. I have read about quorum disks, external/sbd stonith plugin and other references, but I'm too confused with all this.<br>
<br>
For example, [1] mention techniques to improve quorum with scsi reserve or quorum daemon, but it didn't point to how to do this pacemaker. Or [2] talks about external/sbd.<br>
<br>
Any help?<br>
<br>
PS: I have attached my corosync.conf and crm configure show outputs<br>
<br>
[1] <a href="http://techthoughts.typepad.com/managing_computers/2007/10/split-brain-quo.html" target="_blank">http://techthoughts.typepad.<u></u>com/managing_computers/2007/<u></u>10/split-brain-quo.html</a><br>
[2] <a href="http://www.gossamer-threads.com/lists/linuxha/pacemaker/78887" target="_blank">http://www.gossamer-threads.<u></u>com/lists/linuxha/pacemaker/<u></u>78887</a><span><font color="#888888"><br>
<br>
-- <br>
Angel L. Mateo Martínez<br>
Sección de Telemática<br>
Área de Tecnologías de la Información<br>
y las Comunicaciones Aplicadas (ATICA)<br>
<a href="http://www.um.es/atica" target="_blank">http://www.um.es/atica</a><br>
Tfo: 868889150<br>
Fax: 868888337<br>
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</font></span></blockquote></div><br><br clear="all"><br>-- <br>esta es mi vida e me la vivo hasta que dios quiera