Linux-HA 入门指南(引用)

https://blog.csdn.net/lxf9601/article/details/6644844

Linux 高可用（HA）集群基本概念详解：
https://blog.csdn.net/younger_china/article/details/51913069
Linux集群技术简介：https://blog.csdn.net/shajc0504/article/details/41489809