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PowerDNS Zone File Sync Script

Description

This Python script automatically synchronizes DNS zone files to a PowerDNS server using the PowerDNS API. It monitors a directory for changes in zone files and updates the corresponding zones on the PowerDNS server. It was originally made for cPanel DNS sync to a remote PowerDNS installation. Scripts to sync changes to Cloudflare & BunnyDNS via API also exists. Please reach out if there's an interest in having these public.

Requirements

  • Python 3
  • requests library for Python
  • Access to PowerDNS API
  • inotify library for file system monitoring

Setup

  1. Install Python 3: Ensure Python 3 is installed on your system.

  2. Install Required Python Libraries: You can install the necessary libraries using pip:

    pip3 install requests inotify

  3. Configure PowerDNS API Access:

    • Ensure that your PowerDNS server has API access enabled.
    • Set the pdns_api_url and api_key variables in the script to match your PowerDNS API URL and API key.

  4. Logging Setup:

    • The script logs events to /var/log/pdns_sync.log. Make sure the user running the script has write permissions to this file or modify the log file path as needed.

Running the Script

  1. Start the Script: Run the script using Python 3:

    python3 pdns_zone_sync.py

    Replace pdns_zone_sync.py with the path to your script.

  2. Monitor Logs: You can monitor the logs for events and errors:

    tail -f /var/log/pdns_sync.log

Notes

  • The script uses inotify to monitor for file changes in the /var/named/ directory. Ensure this path is correct or update it according to your configuration.
  • The script skips SOA records for existing zones and only updates them when creating new zones.
  • It's recommended to run the script in a screen session or set it up as a service for continuous operation.

Remember to replace pdns_zone_sync.py with the actual filename of your script if it's different. Also, make sure to adjust any paths or configuration details to fit your specific setup.