https://blog.csdn.net/nqxqxq/article/details/76154847
https://www.cnblogs.com/lgeng/p/6567424.html saltstack安装配置详解
http://www.mamicode.com/info-detail-1769462.html
https://www.jianshu.com/p/efd622c7d8a3 saltstack语法