dynamicDNS.py

import requests, schedule, time
from datetime import datetime


def dynamicDNS():
    mydomain = 'domain.com'
    myhostname = "gateway"
    gdapikey = "api_key:key_secret"
    logdest = "local7.info"

    myip = requests.get('https://api.ipify.org').text

    url = f'https://api.godaddy.com/v1/domains/{mydomain}/records/A/{myhostname}'
    headers = {'Authorization': f'sso-key {gdapikey}'}
    gdip = requests.get(url, headers=headers).json()[0]['data']

    print(f'{datetime.now().strftime("%Y-%m-%d %H:%M:%S")} -- Current External IP is {myip}, GoDaddy DNS IP is {gdip}')

    if (gdip != myip and myip != ''):
        print('\nIP address has changed! Updating on GoDaddy')
        url = f'https://api.godaddy.com/v1/domains/{mydomain}/records/A/{myhostname}'
        headers = {'Authorization': (f'sso-key {gdapikey}'), 'Content-Type': 'application/json'}
        data = '[{\"data\": "%s"}]' % myip
        response = requests.put(url, headers=headers, data=data)
        if (response.status_code == 200):
            print(f'Changed IP on {myhostname}.{mydomain} from {gdip} to {myip}')
        else:
            print(f"error, response code: {response.status_code}")


schedule.every(10).minutes.do(dynamicDNS)

while True:
    schedule.run_pending()
    time.sleep(1)