Set static IP address
Your just need to edit one of /etc/network/interfaces, /etc/network/interfaces.d/eth0`
vim /etc/network/interfaces
Or
touch /etc/network/interfaces.d/eth0
vim /etc/network/interfaces.d/eth0
content of interfaces
# 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
auto eth0
iface eth0 inet static # static IP
address 192.168.1.8
netmask 255.255.255.0
gateway 192.168.1.1
Or Content of eth0
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static # static IP
address 192.168.1.8
netmask 255.255.255.0
gateway 192.168.1.1
Set DNS
vim /etc/resolv.conf
content of resolv.conf
nameserver 119.29.29.29
nameserver 8.8.4.4
If you set iface eth0 inet auto your nameserver would be overwitten very time when the system reboot.
Enable the configuration
systemctl restart network-manager.service
systemctl restart network-online.target
systemctl restart networking.service
