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Dynamic DNS with Cloudflare - Python Script
#!/usr/bin/python
# Set up a new A record in Cloudflare, add the details of it along with your account details below
# Make sure this script runs on startup (or whenever you get a new IP...)
#
# @author Aaron Rice <aaron@duedil.com>
import urllib
import json
import sys
try:
new_ip = urllib.urlopen("http://my-ip.heroku.com/").read()
except:
print "Error getting IP"
sys.exit()
# Put your Cloudflare settings here.
# The host must be an A record that already exists in cloudflare
data = {
"a" : "DIUP",
"tkn" : "API_TOKEN_HERE",
"u" : "CLOUDFLARE_EMAIL_HERE",
"ip" : new_ip.strip(),
"z" : "DOMAIN_HERE",
"hosts" : "DNSNAME.DOMAIN_HERE",
}
try:
dns_response = json.loads(urllib.urlopen("https://www.cloudflare.com/api_json.html", urllib.urlencode(data)).read())
if dns_response[u'result'] == "success":
print "IP updated to " + new_ip,
else:
print "Error Setting IP"
except:
print "Error with cloudflare API"
@mooglestiltzkin

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@mooglestiltzkin mooglestiltzkin commented Mar 30, 2013

Hi Riceo,

May i ask what this script is, how it works ?

I'm trying to get cloudflare to work with my dynamic dns service for my website which uses no-ip.info

Does your script somehow make this possible ?

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@riceo riceo commented Jul 2, 2013

Hi,

Sorry I haven't responded sooner - I had no idea you commented.

This was a quick hack for dynamic DNS via Cloudflare. If you run it as a cronjob on your server it will use the Cloudflare API to update your server's current public IP adress for the specified DNS entry on Cloudflare.

The change should only take a few minutes max to propagate.

I wouldn't trust it in a production environment, but it should work fine for testing / dev.

Let me know if you have any problems, and feel free to email me if I don't respond quick enough here!

Cheers,
Aaron

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@tiagoad tiagoad commented Feb 11, 2014

Hey! I made a script similar to this, but it can update several hosts (like example.com and www.example.com).

Check it out here: https://github.com/TTSDA/CfDDNS

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@riceo riceo commented Apr 12, 2014

@ttsda nice!

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@nardev nardev commented Jan 9, 2017

seems like parameters are changed now...

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@riceo riceo commented Nov 20, 2018

I'd imagine so!

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