Tommaso Barbato

developer & sysadmin

Use Cloudflare as a Dynamic DNS with a simple script

Let’s say you’re experimenting with a Raspberry Pi or have an old computer and you want to host a website at home instead of buying a subscription to a VPS. You go ahead, craft your best CSS, link a cool domain name to your IP, forward the ports, start Apache or nginx or whatever and there you go: home-made web server, nice!

But then, your crappy router decides to have a problem and you have to reset it. And when it’s back on, you discover with horror that your provider assign the IP address dynamically and guess what: your IP changed and your website is now unreachable.

Now there are three solutions to this problem:

  1. Switch to a provider which supplies static IPs
  2. Manually change the IP address of the A record of your domain DNS everytime the router decides to act weird
  3. Set up an automatic script to change the IP address of the A record of your domain DNS and go make a pie

For the

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