Netbox: set DNS name if not set for non-servers
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Authored by Volans on Aug 7 2020, 11:15 AM.

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Referenced Files

	F31984332: raw.txt
	Aug 7 2020, 11:44 AM

	F31984320: raw.txt
	Aug 7 2020, 11:35 AM

	F31984302: raw.txt
	Aug 7 2020, 11:15 AM

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	import ipaddress

	from time import sleep

	from dns import resolver

	ips = IPAddress.objects.filter(status='active', dns_name='')
	print(f'Found {len(ips)} active IPs without a DNS name')
	aggregates = Aggregate.objects.all()
	dns_resolver = resolver.Resolver()


	def resolve_ptr(ip):
	targets = []
	try:
	rr = dns_resolver.query(ipaddress.ip_interface(ip).ip.reverse_pointer, 'PTR')
	except resolver.NXDOMAIN:
	print(f'No records for {ip}, skipping')
	return []
	except resolver.NoNameservers:
	print(f'No reply for {ip}, not in our space?')
	return []
	for rdata in rr:
	target = rdata.target.to_text()
	if target[-1] != '.':
	print(f'Skipping relative name {target}')
	continue
	targets.append(target[:-1])
	if len(targets) != 1:
	print(f'ERROR: Found {len(targets)} names for {ip}, skipping: {targets}')
	return []
	return targets


	for ip in ips:
	if ip.device.device_role.slug == 'server':
	print(f'Skipping ip {ip}, belong to a server')
	continue
	if not [aggr for aggr in aggregates if ip.address in aggr.prefix]:
	print(f'Skipping ip {ip}, not in our ranges')
	continue
	targets = resolve_ptr(ip)
	if targets:
	#ip.dns_name = targets[0]
	#ip.save()
	print(f'Set DNS name for {ip} to {targets[0]}')
	sleep(0.2)

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