Setup AKS Private Cluster with BYO DNS

Pre-requirements

• Azure CLI and terraform installed locally
• Pre-configure DNS servers outside of AKS VNet
• Forward AKS cluster FQDN azmk8s.io (or only private cluster FQDN privatelink.<region>.azmk8s.io) to Azure DNS 168.63.129.16
• Get the DNS servers IP address, which would be set in custom_dns on next section
• Get the DNS server's VNet resource ID, which would be set in custom_dns_vnet_id on next section

Refer dns-server for example configuration with bind.

How to deploy

Modify the required parameters in variables.tf, which include:

• resource_group_name
• cluster_name
• custom_dns
• custom_dns_vnet_id
• client_id
• client_secret

Then run the terraform command to deploy private cluster:

terraform init
terraform apply