TLDR: Here’s the GitHub repo, grab it and give it a spin.
This whole project is inspired by this AWESOME tutorial by Jussi Roine. I’m not that fond of Powershell and I know that I am not alone there. Therefore I pretty much copied the whole project and wrote it in plain C#.
Description
Long story short, this project helps you get rid of the headache that dynamic IP address is. Give that you use Azure DNS for your DNS needs, this project will update any record-set for you with your current external IP address. The external IP address is fetched by a simple GET request to http://checkip.amazonaws.com/ (lol).
Requirements
Obviously you need access to an Azure Subscription as well as a Service Principal. The Service Principal needs to have the DNS Zone Contributor role, to be allowed to upsert recordsets.
A more detailed explanation of the parameters needed:
- TenantId: The ID of your Azure Tenant.
- SubscipritonId: The ID of your Azure Subscription.
- RgName: The name of the resource group where your DNS Zone is created.
- ZoneName: The name of your DNS Zone (e.g. something.com).
- RecordSetName: The A record (e.g www, or any subdomain). This doesn’t need to exist before running.
- ClientID: From your Service Principal
- ClientSecret: From your Service Principal
- IntervalInMinutes (optional): Integer represetning how often (in minutes) the record will be updated (if changed). Default value is 5.
Installation (local copy)
Build (run the following command while in the same directory as Dockerfile)
docker build -t dns-updater .Run
docker run -d -e tenantId=XXXXX -e subscriptionId=XXXXX -e rgName=XXXXX -e zoneName=XXXXX -e recordsetName=XXXXX -e clientId=XXXXX -e clientSecret=XXXXX -e intervalInMinutes=5 dns-updater
Installation (remote image)
docker run -d -e tenantId=XXXXX -e subscriptionId=XXXXX -e rgName=XXXXX -e zoneName=XXXXX -e recordsetName=XXXXX -e clientId=XXXXX -e clientSecret=XXXXX -e intervalInMinutes=5 ghcr.io/nikosdelis/azure-dns-updater:latest