How to Configure a Static IP Address on Ubuntu

To set a static IP address on Ubuntu, you can follow the steps below. This example assumes Ubuntu 20.04; please adjust the steps accordingly for your specific Ubuntu version.

1. Identify Network Interface:

1. Check Network Interfaces:
   • Open a terminal and run the following command to find your network interface name (typically eth0 or enpXsX):

     ip a

2. Set Static IP Address:

1. Edit Netplan Configuration File:
   • Open a text editor using the following command (you can use nano or any text editor of your choice):

     sudo nano /etc/netplan/00-installer-config.yaml

2. Edit Netplan Configuration:
   • Edit the file content as follows:
     network:
       version: 2
       renderer: networkd
       ethernets:
         your_interface_name: # Add your interface name here (e.g., eth0)
           dhcp4: no
           addresses: [your_static_ip/your_subnet_mask]
           gateway4: your_gateway
           nameservers:
             addresses: [your_dns_server]

   • Fill in the variables:
     • your_interface_name: Your network interface name.
     • your_static_ip: Your desired static IP address.
     • your_subnet_mask: Subnet mask.
     • your_gateway: Default gateway.
     • your_dns_server: DNS server’s IP address.
3. Apply Netplan Configuration:
   • Apply the Netplan configuration by running:

     sudo netplan apply

3. Verify Network Settings:

1. Check Network Settings:
   • Verify the network settings using the following command:

     ip a

   • Ensure that your network interface lists the new static IP address.
2. Check Internet Connection:
   • Test the internet connection using a web browser or the ping command:

     ping google.com

   • If the ping is successful, your internet connection is working correctly.

By following these steps, you can set a static IP address on Ubuntu. Note that you may need to restart network services or the network interface for the changes to take effect.