gandi-ldns

Simple quick & dirty script to update DNS A record of your domain dynamically using gandi.net's API. It is very similar to no-ip and dyndns et al where you can have a domain on the internet which points at your computer's IP address, except it is free (once you have registered the domain) and does not suffer from any forced refreshing etc.

This fork is originally based on matt1's gandi-ddns script, however, it it modified to use Gandi's new "LiveDNS" API instead of the old XML-RPC API. The major differences are:

• Uses the LiveDNS API and therefore requires your LiveDNS API key, which is different from the XML-RPC key.

• Only retains compatibility with Python 3.3+, as Python 2.7 will be officially retired in 2020.

• Dependent on the excellent Requests library.

This version is mostly compatible with the original config file format, only the API Key and API URL need to be changed (see config.example.txt).

Every time the script runs it will get the current domain config from gandi.net's API and look for the IP in the A record for the domain (default name for the record is '@' but you can change that if you want to). It will then get your current external IP from a public "what is my ip" site. Once it has both IPs it will compare what is in the DNS config vs what your IP is, and update the DNS config for the domain as appropriate so that it resolves to your current IP address.

Setup

Ensre you have Python 3.3+ installed, as well as Requests. If you are running a Linux distribution, Requests can likely be installed from your distribution's repositories.

On Arch-based distributions:

pacman -S python-requests

On Debian-based distributions (Ubuntu, Mint, etc):

apt install python3-requests

Then, simply download/clone the contents of this repository to a location of your choice.

You should then copy config.example.txt to config.txt and, at a minimum, modify the values for domain and apikey. If you want to edit the DNS record for a subdomain, you should also edit the a_name entry.

Usage

The script can be simply ran as python3 gandi-ldns.py and takes no arguments. The config.txt file in the script folder will be used.

To run periodically, you can use cron or systemd timers.