Set static IP

the network parameters of Ubuntu are saved in the file/etc/network/interfaces, and the default settings use DHCP, as follows:

# The Primary network interface

Auto Eth0

Iface eth0 inet DHCP

Here's how to set up a static IP:

(1) Edit/etc/network/interfaces

1.1) block the DHCP line

# The Primary network interface

Auto Eth0

#iface eth0 inet DHCP

1.2) Add parameters related to static IP

# The Primary network interface

Iface eth0 inet Static

Address 192.168.0.10

Netmask 255.255.255.0

Gateway 192.168.0.1

(2) Edit/etc/resolv.conf, set DNS

NameServer 202.96.134.133

NameServer 202.106.0.20

(3) Perform the following two commands to enable the new settings

$sudo Ifdown eth0

$sudo ifup eth0

Set static IP