ionos-ddns/README.md

IONOS DDNS Auto-Updater & Creator

A Python-based system service that automatically updates DNS records on IONOS. Unlike standard DDNS scripts, this solution uses the IONOS REST API, allowing it to:

1. Update existing DNS records.
2. Create new DNS records automatically if they don't exist.
3. Check the current DNS value before updating to avoid API rate limits.

Features

• Smart Check: Compares public IP with current DNS resolution before sending API requests.
• Auto-Discovery: Automatically detects which DNS Zone a subdomain belongs to.
• System Service: Runs as a background systemd service with crash protection.
• Logging: Detailed logs in /var/log/ionos-ddns.log.

Prerequisites

• Python 3
• An IONOS account with access to the "Developer API".
• An API Key (Prefix + Secret) generated at developer.hosting.ionos.com.

Installation

1. Clone the repository to /opt

It is recommended to install this in a system directory.

sudo mkdir -p /opt/ionos-ddns
sudo git clone [https://github.com/TWOJA_NAZWA/ionos-ddns.git](https://github.com/TWOJA_NAZWA/ionos-ddns.git) /opt/ionos-ddns
cd /opt/ionos-ddns