1.查看接口名称：

ip add

从输出中可以看到以太网的接口名称：ens160:

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: ens160: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 00:0c:29:bc:e1:11 brd ff:ff:ff:ff:ff:ff
    inet 192.168.10.103/24 brd 192.168.10.255 scope global ens160
       valid_lft forever preferred_lft forever
    inet6 fd3d:7fef:487b:0:20c:29ff:febc:e111/64 scope global mngtmpaddr dynamic
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:febc:e111/64 scope link
       valid_lft forever preferred_lft forever

2.编辑配置文件：

vi /etc/network/interfaces

 打开时的状态：

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

source /etc/network/interfaces.d/*

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto ens160
iface ens160 inet dhcp

配置静态IP地址：将iface ens160 inet dhcp注释掉，并添加相应静态IP设定：

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

source /etc/network/interfaces.d/*

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto ens160
#iface ens160 inet dhcp
iface ens160 inet static
                address 192.168.1.111 
                netmask 255.255.255.0
                gateway 192.168.1.1 

保存后退出。

配置DNS服务器：

vi /etc/resolvconf/resolv.conf.d/head

如下添加DNS服务器信息，保存并退出。

# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)

#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 114.114.114.114
nameserver 8.8.8.8

3.重启网络服务。

/etc/init.d/networking restart