1. 修改IP

vim /etc/network/interfaces

内容如下

auto ens33
iface ens33 inet static
address 192.168.1.200
netmask 255.255.255.0
gateway 192.168.1.1

1. 重启

systemctl restart networking

1. 修改DNS

vim /etc/resolv.conf

# 添加 
nameserver 114.114.114.114