Provider: Azure DNS

[cl8dep]

Summary

Add support for Azure DNS as a read/write provider.

API

Azure DNS uses the Azure Resource Manager REST API. Auth via service principal (client ID + client secret + tenant ID) or managed identity.

• Docs: https://learn.microsoft.com/en-us/rest/api/dns/
• SDK: Azure.ResourceManager.Dns NuGet package

Config

providers:
  azure:
    type: azure_dns
    subscription_id: "${AZURE_SUBSCRIPTION_ID}"
    resource_group: "${AZURE_RESOURCE_GROUP}"
    tenant_id: "${AZURE_TENANT_ID}"           # or env var
    client_id: "${AZURE_CLIENT_ID}"           # or env var
    client_secret: "${AZURE_CLIENT_SECRET}"   # or env var

Supports managed identity when running in Azure (no explicit credentials needed).

Implementation notes

• Use Azure.ResourceManager.Dns + Azure.Identity for auth
• GetZoneAsync: list record sets via RecordSets.ListByDnsZone
• ApplyPlanAsync: create/update via RecordSets.CreateOrUpdate, delete via RecordSets.Delete
• TXT records: Azure returns values as array of strings per chunk — join per RFC 4408