DDNS Cloudflare

this will help you change your A record to your cloudflare domain / sub domain by updating it dynamicaly when it's change. It's suitable for raspberry / pine64 user that need to remote it but have dynamic IP, almost same with https://ngrok.com/ but using your own domain

Preparation

• Make sure you already have domain that pointed to Cloudflare
• Get your cloudflare api key in here https://support.cloudflare.com/hc/en-us/articles/200167836-Where-do-I-find-my-Cloudflare-API-key-
• Get Zone ID, run this command on your terminal

     -H "X-Auth-Email: user@example.com" \
     -H "X-Auth-Key: c2547eb745079dac9320b638f5e225cf483cc5cfdda41" \
     -H "Content-Type: application/json"
  

  change name=example.com with your domain name, user@example.com with your email, and xauthkey with you api key, also don't forget to change this variable in cfddns.py script
• Check for zone id in result, example 7c5dae5552338874e5053f2534d2767a
• Get DNS ID, run this command on your terminal

     -H "X-Auth-Email: user@example.com" \
     -H "X-Auth-Key: c2547eb745079dac9320b638f5e225cf483cc5cfdda41" \
     -H "Content-Type: application/json"

change name=example.com with your domain name, user@example.com with your email, and xauthkey with you api key, 023e105f4ecef8ad9ca31a8372d0c353 with your zone id

• Change this zone id,character after /zones/ and dns id, character after /dns_records/ with your dns id https://api.cloudflare.com/client/v4/zones/023e105f4ecef8ad9ca31a8372d0c353/dns_records/0d1123456b5986995abf49123457002cd3 in cfddns.py script

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Execution

To execute this script you can run this in terminal

pip install requests

mv cfddns.py /usr/bin/

python /usr/bin/cfddns.py > /dev/null 2>&1 & disown

To make it autorun echo "python /usr/bin/cfddns.py > /dev/null 2>&1 & disown" >> /etc/rc.local

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Notes

• i tested it in debian 9 on pine64 with python 2.7
• log file /var/log/cfddns.log