azurerm_kubernetes_cluster.dns_prefix should be required

[NickMRamirez]

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Terraform Version

Terraform v0.11.3

Affected Resource(s)

• azurerm_kubernetes_cluster

Terraform Configuration Files

Note that I have not set the dns_prefix field on the azurerm_kubernetes_cluster resource.

resource "azurerm_kubernetes_cluster" "aks" {
  name                = "akscluster1"
  location            = "${azurerm_resource_group.aks.location}"
  resource_group_name = "${azurerm_resource_group.aks.name}"

  linux_profile {
    admin_username = "aksuser"

    ssh_key {
      key_data = "${file("../example_ssh_keypairs/ssh_public_cert.pem")}"
    }
  }

  agent_pool_profile {
    name            = "default"
    count           = 1
    vm_size         = "Standard_B2ms" # 2 Cores, 8 GB RAM $0.094/hour
    os_type         = "Linux"
    os_disk_size_gb = 30
  }

  service_principal {
    client_id     = "${var.service_principal_client_id}"
    client_secret = "${var.service_principal_client_secret}"
  }

  tags {
    Environment = "Dev"
  }
}

Panic Output

Error: Error applying plan:

1 error(s) occurred:

* azurerm_kubernetes_cluster.aks: 1 error(s) occurred:

* azurerm_kubernetes_cluster.aks: containerservice.ManagedClustersClient#CreateOrUpdate: Failure sending request: StatusCode=400 -- Original Error: Code="" Message=""

Expected Behavior

The AKS resouces should have been created.

Actual Behavior

Get an undescript error:

Failure sending request: StatusCode=400 -- Original Error: Code="" Message=""

Steps to Reproduce

Leave off the dns_prefix field from the azurerm_kubernetes_cluster resource.

References

According to the Terraform documentation, the dns_prefix field is optional. However, creating an AKS cluster with the Azure Portal, it is a required field.

[NickMRamirez]

It looks like the dns_prefix field is marked as optional in terraform-provider-azurerm/azurerm/resource_arm_kubernetes_cluster.go, line 38.

[katbyte]

Hey @NickMRamirez,

This was included in the 1.7 released available as of this afternoon, I hope it resolves this issue for you!

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. If you feel I made an error 🤖 🙉 , please reach out to my human friends 👉 [email protected]. Thanks!