Azure DNS

Introduction

Azure DNS is a reliable, scalable, and secure DNS service that hosts your domain names and provides fast name resolution using Microsoft global network infrastructure.

Create a DNS Zone

Follow these steps to create a DNS zone in Azure Portal:

1. Sign in to Azure Portal.
2. Navigate to All services > DNS zones.
3. Click + Create.
4. Provide the Subscription, Resource group, and Name of your domain.
5. Review and click Create.

az network dns zone create \
  --resource-group MyResourceGroup \
  --name example.com

resource "azurerm_dns_zone" "example" {
  name                = "example.com"
  resource_group_name = azurerm_resource_group.rg.name
}

Record Types

Example of adding an A record:

az network dns record-set a add-record \
  --resource-group MyResourceGroup \
  --zone-name example.com \
  --record-set-name www \
  --ipv4-address 20.30.40.50

resource "azurerm_dns_a_record" "www" {
  name                = "www"
  zone_name           = azurerm_dns_zone.example.name
  resource_group_name = azurerm_resource_group.rg.name
  ttl                 = 300
  records             = ["20.30.40.50"]
}

Best Practices

• Use TTL values appropriate to your change frequency.
• Separate public and private DNS zones.
• Implement Azure Private DNS for internal name resolution.
• Enable DNSSEC where applicable.
• Monitor DNS queries with Azure Monitor logs.

FAQ