linux 安装服务

 cat /etc/redhat-release

 jdk:

https://www.cnblogs.com/yybrhr/p/9810764.html

redis:

https://www.cnblogs.com/teamemory/p/9482475.html

mysql:

https://www.jianshu.com/p/276d59cbc529

防火墙：

https://www.cnblogs.com/huizhipeng/p/10127333.html