Dynamic DNS Update for Home Assistant

This project is a Flask application that updates the dynamic DNS records for a list of hostnames with Loopia as the DNS provider. It also includes a Home Assistant sensor and automation.

Installation

1. Clone the repository:

   git clone https://github.com/swetoast/smartresolver.git

2. Navigate to the project directory:

   cd smartresolver

3. Install the required Python packages:

   pip install flask requests configparser

Configuration

1. Open dns_endpoint.conf in a text editor.
2. Under the [Credentials] section, set username and password to your Loopia DNS credentials.
3. Under the [Hostnames] section, set hostnames to a comma-separated list of hostnames to update.
4. Under the [DEFAULT] section, set HOST, PORT, USE_HTTPS, CERTIFICATE_PATH, and KEY_PATH as needed.

Running the Application

1. Start the application:

   python smartresolver.py

2. The application will now update your dynamic DNS records whenever you access http://IP_ADDRESS:PORT/update_dyndns.

Home Assistant Sensor

To add a sensor in Home Assistant that triggers the dynamic DNS update:

1. Add the following to your configuration.yaml:

   sensor:
     - platform: rest
       resource: http://IP_ADDRESS:PORT/update_dyndns
       name: DNS Resolver
       value_template: '{{ value_json[0].status }}'
       json_attributes:
         - 'hostname'
         - 'ip_address'
       scan_interval:
         hours: 4

2. Restart Home Assistant to apply the changes.

Home Assistant Automation

To add an automation in Home Assistant that triggers the dynamic DNS update when the IP address does not match:

1. Add the following to your automations.yaml:

   alias: "Auto-Update: Update DNS Resolver on IP Mismatch"
   description: >-
     This automation updates the DNS Resolver sensor when its IP address does not
     match with the external IP sensor.
   trigger:
     - platform: template
       value_template: >-
         {{ states('sensor.external_ip') != state_attr('sensor.dns_resolver',
         'ip_address') }}
   action:
     - service: homeassistant.update_entity
       target:
         entity_id: sensor.dns_resolver
       data: {}
   mode: restart

2. Restart Home Assistant to apply the changes.

License

This project is unlicensed.