Route53 dynamics DNS

gistfile1.py

ZONE_ID = "<ZONE ID>"
DOMAIN_NAME = "host.name.com."  # keep ending period

from boto.route53.connection import Route53Connection
from boto.route53.record import ResourceRecordSets
import requests
import sys

ip = requests.get("http://httpbin.org/ip").json()['origin']

# The credentials are located in ~/.boto
conn = Route53Connection()
record = conn.get_all_rrsets(ZONE_ID, 'A', DOMAIN_NAME, maxitems=1)[0]

if not record.name == DOMAIN_NAME:
    sys.exit(0)

old_ip = record.resource_records[0]

if ip == old_ip:
    sys.exit(0)

hosted_zone = conn.get_hosted_zone(ZONE_ID)

zone = conn.get_zone(hosted_zone['GetHostedZoneResponse']['HostedZone']['Name'])
zone.update_a(
    name=DOMAIN_NAME,
    value=ip,
    ttl=record.ttl,
    identifier=record.identifier
)