1，港口安装先决条件
~]# hostnamectl set-hostname reg.linux.io名设置： ~]# hostnamectl set-hostname reg.linux.io
关闭~]# for i in stop disable ;do sudo systemctl $i firewalld; done ： ~]# for i in stop disable ;do sudo systemctl $i firewalld; done ＃for ~]# for i in s
