Setting up a static IP address on your Ubuntu Server is crucial for maintaining network stability, ensuring uninterrupted remote access, and avoiding conflicts with dynamic IP changes. In this guide, we’ll walk you through the steps to configure a static IP on Ubuntu Server.

Step 1: Identify Network Interface

First, determine the network interface you want to configure. Run the following command:

ip a

Look for your primary network adapter, usually named eth0, ens33, or similar.

Step 2: Edit the Netplan Configuration

Ubuntu Server uses Netplan for network configuration. Edit the Netplan file using:

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

Modify or add the following lines, replacing the values with your desired IP settings:

network:
  ethernets:
    ens33:
      dhcp4: no
      addresses:
        - 192.168.1.100/24
      gateway4: 192.168.1.1
      nameservers:
        addresses:
          - 8.8.8.8
          - 8.8.4.4
  version: 2

Replace ens33 with your network interface name and adjust the IP addresses accordingly.

Step 3: Apply Changes

Save the file and apply the new configuration with:

sudo netplan apply

To verify, run:

ip a

Step 4: Test Connectivity

Test the static IP configuration with:

ping -c 4 8.8.8.8

If everything is set up correctly, your Ubuntu Server should now be using a static IP address.