To add static IP address to your server first you need to log into your server with root privileges. By default Ubuntu server sets the interface to use DHCP. To assign a static IP you need to edit

Here you will find here something like this:

Edit that file accordingly and replace with your own IP configuration. (If you don’t know your own ISP’s DNS servers you can use Google’s DNS):

Save and exit:

:wq

Reload (start and stop) network: