Dynamic DNS w/ Linode DNS

linode-dns.py

#!/usr/bin/env python
import urllib
import json
import sys

LINODE_API_URL = 'https://api.linode.com/'
LINODE_API_KEY = '' # Add in your Linode API Key

TARGET_DOMAIN = 'example.com' # Replace with domain name
TARGET_RECORD = 'home' # Replace with sub domain

def do_api(action, **kwargs):
    kwargs['api_key'] = LINODE_API_KEY
    kwargs['api_action'] = action

    params = urllib.urlencode(kwargs)
    f = urllib.urlopen('?'.join([LINODE_API_URL, params]))
    json_resp = json.load(f)
    return json_resp

domains = do_api('domain.list')['DATA']
domain_id = None
for domain in domains:
    if domain['DOMAIN'] == TARGET_DOMAIN:
        domain_id = domain['DOMAINID']
        break

if domain_id is None:
    sys.exit('%s is not found in list' % TARGET_DOMAIN)

records = [
    x for x in do_api('domain.resource.list', DomainID=domain_id)['DATA']
        if x['NAME'] == TARGET_RECORD and x['TYPE'].upper() in ('A',)
]

for record in records:
    print do_api('domain.resource.update',
        DomainID=record['DOMAINID'], ResourceID=record['RESOURCEID'],
        Target='[remote_addr]')