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John Ogbonna
John Ogbonna

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Azure Applied Skills: Create DNS zones and configure DNS settings

#azure #cloud #devops #cloudskills

This is the last exercise in the Azure Networking series. Here we will:

  • Create and configure a private DNS zone.
  • Create and configure DNS records.
  • Configure DNS settings on a virtual network. We will be building on what we did in this exercise so make sure this exercise is done first

Exercise 05: Create DNS zones and configure DNS settings

Create a private DNS zone

  • On the Azure portal, search for and select Private dns zones
    select Private dns zones

  • Select + Create and configure the DNS zone:

    • Subscription: Select your subscription
    • Resource group: Your RG
    • Name: private.contoso.com
    • Region: East US

  • Select Review + create and then select Create.

  • Wait for the DNS zone to deploy, and then select Go to resource.

select Go to resource

Create a virtual network link to your private DNS zone

In order to resolve DNS records in a private DNS zone, resources must be linked to the private zone. A virtual network link associates the virtual network to the private zone.

  • Working with the private.contoso.com DNS zone, in the DNS Management blade, select Virtual network links.
  • Select + Add” and enter:
    • Link name: app-vnet-link
    • Virtual network: app-vnet
    • Enable auto registration: Enabled
  • Click create and wait for it to deploy

Create a DNS record set

  • DNS records provide information about the DNS zone.

  • Working on the private.contoso.com DNS zone, in the DNS Management blade, select + Recordsets.
    recordsets

  • There will be 2 A record sets there by default. Select +Add and configure like this:

    • Name: backend
    • Type: A
    • TTL: 1
    • IP address: 10.1.1.5

  • his record set implies there is a virtual machine in app-vnet with a private IP address of 10.1.1.5.

    private IP address

In this exercise, we created a private DNS zone (private.contoso.com) in Azure, linked it to a virtual network (app-vnet) with auto-registration enabled, and added a DNS A record for a backend server (10.1.1.5). This setup allows private name resolution within the virtual network, supporting internal communication without exposing resources to the public internet.

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