Manually Change IP Address in Ubuntu (Versions 18.04 to 24.04)

​

Manual IP Change Instructions

Learn how to update your IP address without server reinstallation. Follow these step-by-step instructions to manually configure the network settings in Ubuntu.

​

Access Portal and Launch VNC

​

Identify Your Network Interface

1. Open Terminal in the VNC session.
2. Execute either of these commands to find your network interface name:

ip a

or

ip link

Take note of your interface name (e.g., ens3 or eth0).

​

Edit the Netplan Configuration File

Navigate to the Netplan directory:

cd /etc/netplan/

Open the configuration file (e.g., 50-cloud-init.yaml):

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

Note: The filename might be different on your system (e.g., 01-network-manager-all.yaml). Make sure to edit the correct file for your installation.

​

Change the IP Address

1. Locate the current IP address line and replace it with your new IP address (e.g., 172.16.30.15).
2. Update the Gateway address in the routes section to match your new network configuration.

​

Configure Multiple IPs (Optional)

To add multiple IP addresses, use this format in your configuration:

addresses:
        - 172.30.1.16/24
        - 172.30.1.17/24
        - 172.30.1.18/24

Important: Maintain proper YAML indentation to avoid configuration errors.

​

Save Configuration

1. Press CTRL + X to exit the editor
2. Press Y to confirm your changes
3. Press Enter to save the file

​

Apply Network Changes

Execute the following command to apply your new network configuration:

sudo netplan apply

​

Verify Configuration

Check your new IP configuration using either command:

ip a

Or check a specific interface:

ip addr show dev ens3

(Replace ens3 with your actual network interface name)