<div dir="ltr"><div><div><div><div>I'm configuring a 2-node cluster on CentOS 6 with corosync + pacemaker + cman. Everything works well except fencing.<br><br></div>I'm using IPMI as the fencing device, I know it's not the best fencing device, but this is the only option I have.<br>
Manual fencing a node (pcs stonith fence <node>) works well: peer node goes offline, resources migrate as expected. However, if network traffic between the two nodes is blocked by iptables, both nodes will try to fence each other, and both would success, which result in both nodes offline.<br>
<br></div>How to avoid such problem ?<br><br></div>Thanks<br></div>Yao<br><div><div><div><div><br></div></div></div></div></div>