# 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:

``` yaml
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.