How to Set a Static IP on Ubuntu

A static IP is important for Linux servers since it stays the same after a reboot. This is crucial for servers like mail, web, and file servers.

On modern Ubuntu Server, Netplan is used for network configuration. You’ll find its settings in /etc/netplan/, where the configuration files are written in YAML and have a .yaml extension.

First, verify the current configuration.

Before setting up Netplan, we first need to find the network interface name. To check the available network interfaces

# ip addr or ifconfig

The active interface here is ens33. It’s always a good idea to note down the current IP details before making any changes, just in case you need to roll back.

To set a static IP instead of DHCP, open the Netplan config file with vim or nano and add this:

# vim /etc/netplan/01-network-manager-all.yaml

# Let NetworkManager manage all devices on this system
network:
  version: 2
  renderer: NetworkManager
  ethernets:
   ens33:
     dhcp4: no
     addresses: [192.168.1.50/24]
     gateway4: 192.168.1.1
     nameservers:
         addresses: [192.168.1.1,8.8.8.8]

To try the configuration before applying 

# netplan try
# netplan apply

In case you run into some issues

# netplan --debug apply

To check the ip address

# ifconfig

View the ip address on interface,

# ip addr show ens33
# ip route show

How to Set a Static IP Using the GUI

Setting a static IP on Ubuntu Desktop is simple:

1. Open Settings and go to the Network or Wi-Fi tab.
2. Click the gear icon next to your connection.
3. In the IPv4 tab, choose Manual and enter your IP address, Netmask, and Gateway.
4. Click Apply, and you’re done!

Great! The output confirms that the static IP and route are set up successfully.