Force recreate on DNS prefix change of AKS cluster

If you try to change the DNS prefix with the configuration before this change, `terraform apply` will fail with a message to this effect.
hashicorp · Jan 7, 2019 · a6051d9 · a6051d9
1 parent 73e868c
commit a6051d9
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diff --git a/azurerm/resource_arm_kubernetes_cluster.go b/azurerm/resource_arm_kubernetes_cluster.go
@@ -75,6 +75,7 @@ func resourceArmKubernetesCluster() *schema.Resource {
 			"dns_prefix": {
 				Type:     schema.TypeString,
 				Required: true,
+				ForceNew: true,
 			},
 
 			"kubernetes_version": {

diff --git a/website/docs/r/kubernetes_cluster.html.markdown b/website/docs/r/kubernetes_cluster.html.markdown
@@ -67,7 +67,7 @@ The following arguments are supported:
 
 * `agent_pool_profile` - (Required) One or more `agent_pool_profile` blocks as documented below.
 
-* `dns_prefix` - (Required) DNS prefix specified when creating the managed cluster.
+* `dns_prefix` - (Required) DNS prefix specified when creating the managed cluster. Changing this forces a new resource to be created.
 
 * `service_principal` - (Required) A `service_principal` block as documented below.