How to Manually Configure a Static IP Address in Ubuntu

By default, Ubuntu uses Netplan to manage network configurations. Follow these steps to manually configure a static IP address.

Step 1: Check Available Network Interfaces

Before modifying the configuration, determine your network interface name.

Open the terminal and run:

ifconfig -a

If ifconfig is not installed, use:

ip a

Look for an interface name similar to ens33, ens34, eth0, or wlp2s0 (for wireless).

Step 2: Navigate to the Netplan Directory

Netplan configuration files are stored in /etc/netplan/. Navigate to the directory:

cd /etc/netplan

• Edit the .yaml file inside the directory to set a static IP:

network:
    version: 2    
    ethernets:
      ens34:# Your network adapter id name
        dhcp4: no # disable DHCP service
        addresses: [192.168.1.109/24] # Static IP address
        gateway4: 192.168.1.7         # Default Gateway
        nameservers:
          addresses: [192.168.1.7,8.8.8.8]

Step 3: Apply the Configuration

To test the configuration before applying, run:

sudo netplan try

If everything is correct, you will see a message saying the changes are applied temporarily for 120 seconds. If something goes wrong, the system will revert.

To permanently apply changes, run:

sudo netplan apply

Step 4: Verify the Configuration

Check if the static IP is set correctly:

ip a

or

ifconfig

You can also test network connectivity:

ping 8.8.8.8 -c 4

Conclusion

You've successfully configured a static IP address on Ubuntu using Netplan. If you encounter issues, check your YAML file for indentation errors or revert to DHCP by setting dhcp4: yes

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