如何在 RHEL 5、6、7、8 或 9 中诊断 fence_ipmilan 失败？

Issue

• 当节点丢失时 fence_ipmilan 隔离失败
• fence_ipmilan 启动或监控检查失败，并显示以下错误：

fence_ipmilan: Failed: Unable to obtain correct plug status or plug is not available   

• 节点离开集群，另一个节点尝试使用 fence_ipmilan 隔离它，但失败了。

Jul 23 15:45:28 node2 fenced[12831]: fencing node node1
Jul 23 15:45:28 node2 fenced[12831]: fence node1 dev 0.0 agent fence_ipmilan result: error from agent
Jul 23 15:45:28 node2 fenced[12831]: fence node1 failed
Jul 23 15:45:28 node2 fenced[12831]: fence node1 dev 0.0 agent fence_ipmilan result: error from agent
Jul 23 15:45:28 node2 fenced[12831]: fence node1 failed

• 如何诊断失败，以使用 fence_ipmilan 隔离节点？