Example script to create Knot DNS config file for Secondaries (slaves) from PowerDNS

powerdns-to-knot-secondaries.py

#! /usr/bin/env python3
#
#
# description:
# An attempt to build a knot style zone file for secondary servers to overcome 
# DNS Catalog Zone restrictions with secondaries
#

import powerdns		# https://github.com/outini/python-powerdns
import sys
import datetime


##############################
# config
config = {}

# (ns0-test)
config['powerdns_api_url']		= "http://ns0-test.mydomain.net:8081/api/v1"
config['powerdns_api_token']		= "<redacted>"
config['sep']				= "####################################"


##############################
## functions

def pdns_connect(config):
	api_client = powerdns.PDNSApiClient(api_endpoint=config['powerdns_api_url'], api_key=config['powerdns_api_token'])
	api = powerdns.PDNSEndpoint(api_client)
	return(api)

def get_pdns_zones(config, pdns_api):
	#print("Connecting to PowerDNS PowerDNS updates..")

	# get list of all zones
	pdns_zones = pdns_api.servers[0].zones
	return(pdns_zones)


def print_knot_config(config, zones, pdns_api):

	timestamp = datetime.datetime.now()
	print("# File created on: " + str(timestamp))
	print("")

	for zone in zones:

		myzone = ""
		myzone_primaries = []
		if zone._api_data['kind'] == "Slave":
			myzone = zone.name.rstrip(".")
			myzone_account = zone._api_data['account']
			myzone_dnssec = zone._api_data['dnssec']
			myzone_primaries = zone._api_data['masters']
			myzone_primaries_str = ', '.join(myzone_primaries)
			myzone_primary_name = myzone + "_primary"

			print(config['sep'])
			print("# zone:", myzone)
			print("# account:", myzone_account)
			print("# dnssec:", myzone_dnssec)
			print("remote:")
			print("  - id: " + myzone_primary_name)
			print("    address: [" + myzone_primaries_str + "]")

			print("zone:")
			print("  - domain: " + myzone)
			print("    master: " + myzone_primary_name)
			print("")
			print("")


##############################
## main

if __name__ == "__main__":

	try:
		pdns_api = pdns_connect(config)
	except:
		print("Cannot connect to PowerDNS API")
		sys.exit(1)

	try:
		zones = get_pdns_zones(config, pdns_api)
	except:
		print("Cannot get list of zones from PowerDNS")
		sys.exit(1)


	print_knot_config(config, zones, pdns_api)