No-IP Dynamic DNS Updater

Description

noip-ddns-updater is a lightweight command-line tool written in Go that updates a No-IP dynamic DNS record. It periodically checks the public IP address and updates the No-IP hostname if the IP has changed.

Features

• Automatically detects the public IP address.
• Updates the No-IP hostname only when the IP has changed.
• Uses environment variables for configuration.
• Can be run as a background service.
• Supports a custom update interval.

Installation

1. Clone the repository:

   git clone https://github.com/middaysan/noip-ddns-updater.git
   cd noip-ddns-updater

2. Build the application:

   go build -o noip_ddns_updater

Usage

Run the program:

./noip_ddns_updater

Command-line options

• -h: Displays usage information and exits.

Environment Variables

Set the following environment variables before running the program:

export NOIP_USER="your_noip_username"
export NOIP_PASS="your_noip_password"
export NOIP_HOST="your_hostname.no-ip.com"
export NOIP_INTERVAL_MINUTES=5

Optional:

export NOIP_URL="https://dynupdate.no-ip.com/nic/update"  # Default No-IP update URL
export CHECK_IP_URL="https://checkip.amazonaws.com"      # Default IP check URL

Example

NOIP_USER="example_user" NOIP_PASS="example_pass" NOIP_HOST="example.ddns.net" NOIP_INTERVAL_MINUTES=10 ./noip_ddns_updater

License

This project is licensed under the MIT License.

Author

Anton Rudy