dyndns

Dynamically update your host DNS name via rfc2136.

Requirements

• A DNS server configured to accept dynamic DNS updates.
• A configured zone and key authorized to update that zone.
• Python 3.6 or greater.
• DNSPython.

Configuration file

The config file is just a JSON file named config.json.

Configuration file definition

key	type	description
zone_master	string	The primary DNS server you will be sending the update to.
zone	string	The zone name you will be updating.
host	string	The primary record name to set or update.
tsigkeyring	dict	Required fields are name, secret, and keyalgorithm matching the host key and secret. Valid values for keyalgorithm are hmac-md5, hmac-sha256, or hmac-sha512
alt_names	array	(Optional) list of other names you want to be associated with.
has_bonjour	boolean	(Optional, default: false) Update the bonjour host entry.
has_local	boolean	(Optional, default: false) Update the local host entry. This is typically the $hostname-local address.
debug	boolean	(Optional, default: false) Set to true to see what gets passed to nsupdate.
urllib_timeout	int	(Optional, default: 10) Set the urllib request timeout in seconds.
dnspython_timeout	int	(Optional, default: 10) Set the dnspython request timeout in seconds.

Usage

$ python3 nsupdate.py <path to config.json>

Optionally build with PyInstaller to create a bundled Python application.