93 lines
2.3 KiB
Markdown
93 lines
2.3 KiB
Markdown
# IONOS DDNS Auto-Updater & Creator
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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:
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1. **Update** existing DNS records.
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2. **Create** new DNS records automatically if they don't exist.
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3. Check the current DNS value before updating to avoid API rate limits.
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## Features
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- **Smart Check:** Compares public IP with current DNS resolution before sending API requests.
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- **Auto-Discovery:** Automatically detects which DNS Zone a subdomain belongs to.
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- **System Service:** Runs as a background `systemd` service with crash protection.
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- **Logging:** Detailed logs in `/var/log/ionos-ddns.log`.
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## Prerequisites
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- Python 3
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- An IONOS account with access to the "Developer API".
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- An API Key (Prefix + Secret) generated at [developer.hosting.ionos.com](https://developer.hosting.ionos.com/).
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## Installation
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### 1. Clone the repository to `/opt`
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It is recommended to install this in a system directory.
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```bash
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sudo mkdir -p /opt/ionos-ddns
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sudo git clone [https://github.com/TWOJA_NAZWA/ionos-ddns.git](https://github.com/TWOJA_NAZWA/ionos-ddns.git) /opt/ionos-ddns
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cd /opt/ionos-ddns
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```
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### 2. Install dependencies
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```
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sudo apt update
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sudo apt install python3-pip
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sudo pip3 install -r requirements.txt
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```
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### 3. Configuration
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```
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sudo nano config.json
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```
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Fill in your api_prefix and api_secret.
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Domains List: Edit domains.txt and add domains one per line:
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```
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sudo nano domains.txt
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```
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Example:
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```
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mydomain.com
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vpn.mydomain.com
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server.other-domain.net
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```
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### 4. Install System Service
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Copy the service file to systemd directory:
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```
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sudo cp ionos-ddns.service /etc/systemd/system/
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```
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Reload daemon, enable and start the service:
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```
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sudo systemctl daemon-reload
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sudo systemctl enable ionos-ddns.service
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sudo systemctl start ionos-ddns.service
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```
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### Monitoring
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Check the service status:
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```
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sudo systemctl status ionos-ddns.service
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```
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View logs:
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```
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tail -f /var/log/ionos-ddns.log
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```
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### How it works
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The script runs in an infinite loop (every 10 minutes).
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Fetches your current Public IP.
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Reads domains.txt.
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For each domain:
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Finds the correct Zone ID via API.
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Checks if an A-Record exists.
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If exists: Checks if IP matches. If not, performs PUT (Update).
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If missing: Performs POST (Create).
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