hetzner-dyndns-docker

Dockerfile and Ansible playbooks to update DNS entry on Hetzner grapped from Fritzbox.

The docker container executes the playbook every 5 minutes.

Build

docker build . -t hetzner-dyndns

Prepare

1. Login to Fritzbox
2. Go to Heimnetz | Netzwerk | Netzwerkeinstellungen
3. Enable Statusinformationen über UPnP übertragen (if not already enabled)

Run

docker run -e "DNS_ZONE=<DOMAIN>" -e "API_KEY=<API-KEY>" hetzner-dyndns

Credits

Playbooks based on previous work from P. Haberkern (thedatabaseme) with the following adjustments:

• Fritzbox UPNP interface does not need username/password
• Don't update the record if the IP has not changed
• Set TTL for DNS entry to 60 seconds instead of 24 hours