目标

  修改系统名称与域名解析

实操演示

• 更改主机名

hostnamectl set-hostname sinfotek

• 查询本地hosts文件

[root@sinfotek ~]# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

##dns服务器配置
[root@sinfotek ~]# cat /etc/resolv.conf
# Generated by NetworkManager
nameserver 202.106.0.20
nameserver 223.5.5.5