fix based on suggestion

azurerm/internal/services/containers/data_source_kubernetes_cluster.go

@@ -215,11 +215,11 @@ func dataSourceArmKubernetesCluster() *schema.Resource {
 				Type:          schema.TypeBool,
 				Computed:      true,
 				Optional:      true,
-				ConflictsWith: []string{"enable_private_cluster"},
-				Deprecated:    "Deprecated in favor of `enable_private_cluster`", // TODO -- remove this in next major version
+				ConflictsWith: []string{"private_cluster_enabled"},
+				Deprecated:    "Deprecated in favor of `private_cluster_enabled`", // TODO -- remove this in next major version
 			},
 
-			"enable_private_cluster": {
+			"private_cluster_enabled": {
 				Type:          schema.TypeBool,
 				Optional:      true,
 				Computed:      true, // TODO -- remove this when deprecation resolves
@@ -503,7 +503,7 @@ func dataSourceArmKubernetesClusterRead(d *schema.ResourceData, meta interface{}
 			}
 
 			d.Set("private_link_enabled", accessProfile.EnablePrivateCluster)
-			d.Set("enable_private_cluster", accessProfile.EnablePrivateCluster)
+			d.Set("private_cluster_enabled", accessProfile.EnablePrivateCluster)
 		}
 
 		addonProfiles := flattenKubernetesClusterDataSourceAddonProfiles(props.AddonProfiles)

azurerm/internal/services/containers/resource_arm_kubernetes_cluster.go

@@ -302,11 +302,11 @@ func resourceArmKubernetesCluster() *schema.Resource {
 				Optional:      true,
 				ForceNew:      true,
 				Computed:      true,
-				ConflictsWith: []string{"enable_private_cluster"},
-				Deprecated:    "Deprecated in favor of `enable_private_cluster`", // TODO -- remove this in next major version
+				ConflictsWith: []string{"private_cluster_enabled"},
+				Deprecated:    "Deprecated in favor of `private_cluster_enabled`", // TODO -- remove this in next major version
 			},
 
-			"enable_private_cluster": {
+			"private_cluster_enabled": {
 				Type:          schema.TypeBool,
 				Optional:      true,
 				ForceNew:      true,
@@ -574,7 +574,7 @@ func resourceArmKubernetesClusterCreate(d *schema.ResourceData, meta interface{}
 	if v, ok := d.GetOk("private_link_enabled"); ok {
 		enablePrivateCluster = v.(bool)
 	}
-	if v, ok := d.GetOk("enable_private_cluster"); ok {
+	if v, ok := d.GetOk("private_cluster_enabled"); ok {
 		enablePrivateCluster = v.(bool)
 	}
 
@@ -765,7 +765,7 @@ func resourceArmKubernetesClusterUpdate(d *schema.ResourceData, meta interface{}
 		if v, ok := d.GetOk("private_link_enabled"); ok {
 			enablePrivateCluster = v.(bool)
 		}
-		if v, ok := d.GetOk("enable_private_cluster"); ok {
+		if v, ok := d.GetOk("private_cluster_enabled"); ok {
 			enablePrivateCluster = v.(bool)
 		}
 		existing.ManagedClusterProperties.APIServerAccessProfile = &containerservice.ManagedClusterAPIServerAccessProfile{
@@ -930,7 +930,7 @@ func resourceArmKubernetesClusterRead(d *schema.ResourceData, meta interface{})
 			}
 
 			d.Set("private_link_enabled", accessProfile.EnablePrivateCluster)
-			d.Set("enable_private_cluster", accessProfile.EnablePrivateCluster)
+			d.Set("private_cluster_enabled", accessProfile.EnablePrivateCluster)
 		}
 
 		addonProfiles := flattenKubernetesAddOnProfiles(props.AddonProfiles)

azurerm/internal/services/containers/tests/data_source_kubernetes_cluster_test.go

@@ -60,7 +60,7 @@ func testAccDataSourceAzureRMKubernetesCluster_privateCluster(t *testing.T) {
 				Check: resource.ComposeTestCheckFunc(
 					testCheckAzureRMKubernetesClusterExists(data.ResourceName),
 					resource.TestCheckResourceAttrSet(data.ResourceName, "private_fqdn"),
-					resource.TestCheckResourceAttr(data.ResourceName, "enable_private_cluster", "true"),
+					resource.TestCheckResourceAttr(data.ResourceName, "private_cluster_enabled", "true"),
 				),
 			},
 			data.ImportStep("service_principal.0.client_secret"),

azurerm/internal/services/containers/tests/resource_arm_kubernetes_cluster_network_test.go

@@ -348,7 +348,7 @@ func testAccAzureRMKubernetesCluster_privateClusterOn(t *testing.T) {
 				Check: resource.ComposeTestCheckFunc(
 					testCheckAzureRMKubernetesClusterExists(data.ResourceName),
 					resource.TestCheckResourceAttrSet(data.ResourceName, "private_fqdn"),
-					resource.TestCheckResourceAttr(data.ResourceName, "enable_private_cluster", "true"),
+					resource.TestCheckResourceAttr(data.ResourceName, "private_cluster_enabled", "true"),
 				),
 			},
 			data.ImportStep(),
@@ -373,7 +373,7 @@ func testAccAzureRMKubernetesCluster_privateClusterOff(t *testing.T) {
 				Config: testAccAzureRMKubernetesCluster_privateClusterConfig(data, false),
 				Check: resource.ComposeTestCheckFunc(
 					testCheckAzureRMKubernetesClusterExists(data.ResourceName),
-					resource.TestCheckResourceAttr(data.ResourceName, "enable_private_cluster", "false"),
+					resource.TestCheckResourceAttr(data.ResourceName, "private_cluster_enabled", "false"),
 				),
 			},
 			data.ImportStep(),
@@ -1030,7 +1030,7 @@ resource "azurerm_kubernetes_cluster" "test" {
   location               = azurerm_resource_group.test.location
   resource_group_name    = azurerm_resource_group.test.name
   dns_prefix             = "acctestaks%d"
-  enable_private_cluster = %t
+  private_cluster_enabled = %t
 
   linux_profile {
     admin_username = "acctestuser%d"

website/docs/d/kubernetes_cluster.html.markdown

@@ -62,7 +62,7 @@ The following attributes are exported:
 
 * `kubernetes_version` - The version of Kubernetes used on the managed Kubernetes Cluster.
 
-* `enable_private_cluster` - If the cluster has the Kubernetes API only exposed on internal IP addresses.                           
+* `private_cluster_enabled` - If the cluster has the Kubernetes API only exposed on internal IP addresses.                           
 
 * `location` - The Azure Region in which the managed Kubernetes Cluster exists.
 

website/docs/r/kubernetes_cluster.html.markdown

@@ -100,7 +100,7 @@ In addition, one of either `identity` or `service_principal` must be specified.
 
 -> **NOTE:** Azure requires that a new, non-existent Resource Group is used, as otherwise the provisioning of the Kubernetes Service will fail.
 
-* `enable_private_cluster` Should this Kubernetes Cluster have it's API server only exposed on internal IP addresses? This provides a Private IP Address for the Kubernetes API on the Virtual Network where the Kubernetes Cluster is located. Defaults to `false`. Changing this forces a new resource to be created.
+* `private_cluster_enabled` Should this Kubernetes Cluster have it's API server only exposed on internal IP addresses? This provides a Private IP Address for the Kubernetes API on the Virtual Network where the Kubernetes Cluster is located. Defaults to `false`. Changing this forces a new resource to be created.
 
 * `role_based_access_control` - (Optional) A `role_based_access_control` block. Changing this forces a new resource to be created.