Update Google Cloud DNS records

update_gcloud_dns.py

import time
import requests
from google.cloud import dns

# Expecting auth already run in environnment
# export GOOGLE_APPLICATION_CREDENTIALS="~/secretkey.json"
# stolen from https://googleapis.dev/python/google-api-core/latest/auth.html

client = dns.Client(project='YOURPROJECTNAME')

zone = client.zone('YOURDNSZONE')
TWO_HOURS = 2 * 60 * 60  # seconds

# There is definitely a cleaner way
MYIP = requests.get("http://api6.ipify.org").content

UPDATE_URLS = ['www.YOURWEBSITE.com.', 'YOURWEBSITE.com.']

changes = zone.changes()

for record in zone.list_resource_record_sets():
    if record.name in UPDATE_URLS and record.record_type=='A':
        #print(record.name)
        changes.delete_record_set(record)

for url in UPDATE_URLS:
    record_set = zone.resource_record_set(url, 'A', TWO_HOURS, [MYIP,])
    changes.add_record_set(record_set)

changes.create()  # API request

print('Waiting for changes to complete',end='')
while changes.status != 'done':
     print('.',end='')
     time.sleep(3)     # or whatever interval is appropriate
     changes.reload()   # API request