cloudflare-ddns

This is a continued version of thatjpk's cloudflare-ddns.

Introduction

A script for dynamically updating Cloudflare DNS records. If you have a dynamic IP and you're hosting servers behind it, it's an easy way to make it 'pseudo-static'.

Dependencies

You'll need a Python interpreter and the following libraries:

PyYAML (pip install pyyaml)
Requests (pip install requests)

You can install them with pip: pip install -r requirements.txt

Features

Two ways to grab your IP address
- HTTP
- DNS lookup (dig)
IPv4 and IPv6 support (A and AAAA records)
Logging
One configuration file for multiple records
Multiple record settings:
- Time to Live (TTL)
- Proxy mode
- Logging level
Lightweight
Smart update (your record will only be updated if needed)

Usage

First, a few assumptions:

You're using Cloudflare to host DNS for a domain you own.
You have one or more A/AAAA records in Cloudflare you intend to dynamically update.

To use this utility, create a copy of the example.com.yml file inside the zones folder and rename it to your zone name. To do a one-off update of your DNS record, simply run python cloudflare-ddns.py -z example.com from your terminal. The script will determine your public IP address and automatically update the records along with it and the settings you provided.

If the program encounters an issue while attempting to update Cloudflare's records, you can check the the logs folder for more informations.

Because dynamic IPs can change regularly, it's recommended that you run this utility periodically in the background to keep your records up-to-date.

Just add a line to your crontab and let cron run it for you at a regular interval.

# Every 30 minutes, update my Cloudflare records.
*/30 * * * * python /path/to/cloudflare-ddns.py -z example.com

This example will update your records every 30 minutes. You'll want to be sure that you insert the correct paths to reflect where the codebase is located.

If you want to learn more about the Cloudflare API, you can read on here.

Credits and Thanks

Cloudflare for having an API and otherwise generally being cool.
icanhazip.com for making grabbing your public IP from a script super easy.
thatjpk for the initial releases of this project.

License

adrienbrignon/cloudflare-ddns

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