Setting a Static IP Address on Ubuntu 24.04

Overview

To set a static IP address on Ubuntu 24.04, you will use the Netplan utility. This tool allows you to configure network settings through YAML configuration files.

Steps to Configure Static IP

1. Identify Your Network Interface

Use the following command to list all network interfaces:

ip addr

Note the name of the interface you want to configure (e.g., enp0s3).

2. Locate the Netplan Configuration File.

Check the contents of the /etc/netplan/ directory to find the active configuration file:

ls -la /etc/netplan/

Common files include 50-cloud-init.yaml or similar.

3. Edit the Configuration File

Open the identified YAML file with a text editor (e.g., nano or micro):

sudo micro /etc/netplan/50-cloud-init.yaml

Modify the file to set a static IP. Here’s an example configuration:

network:
  version: 2
  ethernets:
    enp0s3:  # Replace with your interface name
      dhcp4: false
      addresses:
        - 192.168.15.185/24  # Your desired static IP
      routes:
        - to: default
          via: 192.168.15.254  # Your gateway
      nameservers:
        addresses: [8.8.8.8, 8.8.4.4]  # DNS servers

4. Apply the Configuration

Save the changes and exit the editor. Then, apply the new configuration with:

sudo netplan apply

5. Verification

To verify that the static IP has been set correctly, use:

ip addr

This process ensures that your Ubuntu server maintains a consistent IP address, which is crucial for server management and network reliability.