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README.md

Azure DNS Update

A utility that can be used to keep your Azure DNS pointed to your on-premises/home public IP address.

Features

Supports updating multiple DNS Zones at once
Can be run on a schedule
Can be run as a Docker container

Prerequisites

The following steps should be completed before this tool will become functional:

Create a new Azure DNS Zone on https://portal.azure.com
Purchase a domain and configure it's nameservers to point to Azure DNS
Create an A record with value @
Configure the Settings as described below in the .env file

Settings

These settings must be configured in a .env file in the same directory as the script.

SUBSCRIPTION_ID=<YOUR_SUBSCRIPTION_ID_GUID>
CLIENT_ID=<YOUR_CLIENT_ID_GUID>
CLIENT_SECRET=<YOUR_CLIENT_SECRET>
TENANT_ID=<YOUR_TENANT_ID_GUID>

RESOURCE_GROUP_NAMES="<YOUR_RESOURCE_GROUP_NAMES_SPACE_DELIMITED>"
ZONE_NAMES="<YOUR_DNS_ZONE_NAMES_SPACE_DELIMITED>"
RECORD_TYPE=A
RELATIVE_RECORD_SET_NAME=@

Usage

To run, simply configure the .env file and run the update-dns.sh script.