Centos 修改主机名

1. 修改vi /etc/hosts
   127.0.0.1 Server_China localhost.localdomain localhost
   
   
2. 修改vi /etc/sysconfig/network
   HOSTNAME=Server_China
   
   
3. 输入下面命令生效
   #hostname Server_China
4. centos7 设置主机名
   

   #!/bin/bash
   
   if [ $# -ne 1 ];
   then
       echo `basename $0` "input hostname"
   else
       hostnamectl --static set-hostname $1
       hostnamectl --transient  set-hostname $1
   fi