If you self host network resources on a residential IP and want to access your home network remotely, you need a dynamic DNS client. There are paid, closed-source solutions out there, but why bother when you can self host using free and open source software!
I wrote this script for the Raspberry Pi platform to enable low cost, simple self hosting to promote a more decentralized internet. On execution, the script fetches public IPv4 and IPv6 addresses and creates/updates DNS records for the subdomains in Cloudflare. Stale, duplicate DNS records are removed for housekeeping.
Source code is available on Github.
Add your custom domain name to your Cloudflare account
Clone this repo to your workspace
git clone https://github.com/timothymiller/cloudflare-ddns.git
Edit config.json and replace the values with your own.
Values explained:
"api_key": "Your cloudflare API Key", "account_email": "The email address you use to sign in to cloudflare", "zone_id": "The ID of the zone that will get the records. From your dashboard click into the zone. Under the overview tab, scroll down and the zone ID is listed in the right rail", "subdomains": "Array of subdomaind you want to assign the IP(s) to (e.g. pi.yourdomain.com)", "proxied": false (defaults to false. Make it true if you want CDN/SSL benefits from cloudflare. This usually disables SSH)
This script requires Python 3.5+, which comes preinstalled on the latest version of Raspbian. Download/clone this repo and execute `./sync`, which will set up a virtualenv, pull in any dependencies, and fire the script.
This script was written with the intention of cron managing it.
1. Upload the cloudflare-ddns folder to your home directory /home/your_username_here/
2. Run the following code in terminal
crontab -e
3. Add the following lines to sync your DNS records every 15 minutes
*/15 * * * * /home/your_username_here/cloudflare-ddns/sync
Happy self hosting!