containers: fix local DNS override hashing

Author: hqhqhqhqhqhqhqhqhqhqhq

internal/services/containers/kubernetes_cluster_node_pool_resource_test.go

@@ -4288,18 +4288,6 @@ resource "azurerm_kubernetes_cluster_node_pool" "test" {
       cache_duration_in_seconds = 7200
     }
 
-    vnet_dns_override {
-      domain                    = "mycustom.local"
-      serve_stale               = "Verify"
-      serve_stale_duration      = 3600
-      query_logging             = "Error"
-      protocol                  = "PreferUDP"
-      forward_destination       = "VnetDNS"
-      forward_policy            = "RoundRobin"
-      max_concurrent            = 2000
-      cache_duration_in_seconds = 7200
-    }
-
     vnet_dns_override {
       domain                    = "cluster.local"
       serve_stale               = "Verify"

internal/services/containers/kubernetes_nodepool.go

@@ -707,7 +707,6 @@ func schemaLocalDNSOverride() *pluginsdk.Schema {
 	return &pluginsdk.Schema{
 		Type:     pluginsdk.TypeSet,
 		Optional: true,
-		Set:      localDNSOverrideHash,
 		Elem: &pluginsdk.Resource{
 			Schema: map[string]*pluginsdk.Schema{
 				"domain": {
@@ -776,16 +775,6 @@ func schemaLocalDNSOverride() *pluginsdk.Schema {
 	}
 }
 
-func localDNSOverrideHash(v interface{}) int {
-	if m, ok := v.(map[string]interface{}); ok {
-		if domain, ok := m["domain"].(string); ok {
-			return pluginsdk.HashString(domain)
-		}
-	}
-
-	return 0
-}
-
 func validateDefaultNodePoolLocalDNSProfileRawConfig(d *pluginsdk.ResourceDiff) error {
 	rawConfig := d.GetRawConfig()
 	if !localDNSRawValueCanIterate(rawConfig) {

internal/services/containers/kubernetes_nodepool_test.go

@@ -0,0 +1,42 @@
+// Copyright IBM Corp. 2014, 2025
+// SPDX-License-Identifier: MPL-2.0
+
+package containers
+
+import (
+	"testing"
+
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
+)
+
+func TestSchemaLocalDNSOverrideHashIncludesSettings(t *testing.T) {
+	localDNSOverride := schemaLocalDNSOverride()
+
+	localDNSOverrides := localDNSOverride.ZeroValue().(*schema.Set)
+	localDNSOverrides.Add(map[string]interface{}{
+		"domain":                    ".",
+		"cache_duration_in_seconds": 3600,
+		"forward_destination":       "VnetDNS",
+		"forward_policy":            "Sequential",
+		"max_concurrent":            1000,
+		"protocol":                  "PreferUDP",
+		"query_logging":             "Error",
+		"serve_stale":               "Verify",
+		"serve_stale_duration":      3600,
+	})
+	localDNSOverrides.Add(map[string]interface{}{
+		"domain":                    ".",
+		"cache_duration_in_seconds": 7200,
+		"forward_destination":       "VnetDNS",
+		"forward_policy":            "RoundRobin",
+		"max_concurrent":            2000,
+		"protocol":                  "PreferUDP",
+		"query_logging":             "Error",
+		"serve_stale":               "Verify",
+		"serve_stale_duration":      3600,
+	})
+
+	if localDNSOverrides.Len() != 2 {
+		t.Fatalf("expected two local DNS override hashes, got %d", localDNSOverrides.Len())
+	}
+}