做HA实验时，启动heartbeat出现错误：
ERROR: Client child command [/usr/lib/heartbeat/ipfail] is not executable
ERROR: Heartbeat not started: configuration error.
ERROR: Configuration error, heartbeat not started.
因为Linux是64位的，ha.cf 配置文件里
/usr/lib/heartbeat/ipfail 这一句要改为：
/usr/lib64/heartbeat/ipfail
再次启动/etc/init.d/heartbeat start
Starting High-Availability services: INFO: Resource is stopped
Done.
成功
本文出自 “小屁孩儿” 博客，谢绝转载！
原文：http://865516915.blog.51cto.com/9037379/1910037