修改服务器主机名：

 

CentOS 7 / Fedora version 18 and above 

Enter the following command to set the hostname, replacing plato with the hostname of your choice: 

hostnamectl set-hostname plato

 

CentOS 6 / Fedora version 17 and below 

Enter the following commands to set the hostname, replacing plato with the hostname of your choice: 

echo "HOSTNAME=plato" >> /etc/sysconfig/network hostname "plato"