参照文档
https://blog.csdn.net/lxn19860201/article/details/51422489
1、
Sep 08 03:02:02 master3 keepalived[12327]: Starting keepalived: /bin/bash: keepalived: command not found
[root@master3 keepalived-1.2.8]# ln -s /usr/local/keepalived/sbin/keepalived /usr/local/sbin/