[AKS] az aks update: Make specified version to match current version when turning off autoupgrade (#31018)

Author: yewmsft

src/azure-cli/azure/cli/command_modules/acs/managed_cluster_decorator.py

@@ -41,6 +41,7 @@
     CONST_PRIVATE_DNS_ZONE_CONTRIBUTOR_ROLE,
     CONST_DNS_ZONE_CONTRIBUTOR_ROLE,
     CONST_ARTIFACT_SOURCE_CACHE,
+    CONST_NONE_UPGRADE_CHANNEL,
 )
 from azure.cli.command_modules.acs._helpers import (
     check_is_managed_aad_cluster,
@@ -8482,6 +8483,38 @@ def update_mc_profile_default(self) -> ManagedCluster:
         mc = self.update_node_resource_group_profile(mc)
         # update bootstrap profile
         mc = self.update_bootstrap_profile(mc)
+        # update kubernetes version and orchestrator version
+        mc = self.update_kubernetes_version_and_orchestrator_version(mc)
+        return mc
+
+    def update_kubernetes_version_and_orchestrator_version(self, mc: ManagedCluster) -> ManagedCluster:
+        """Update kubernetes version and orchestrator version for the ManagedCluster object.
+
+        :param mc: The ManagedCluster object to be updated.
+        :return: The updated ManagedCluster object.
+        """
+        self._ensure_mc(mc)
+
+        # Check if auto_upgrade_channel is set to "none"
+        auto_upgrade_channel = self.context.get_auto_upgrade_channel()
+        if auto_upgrade_channel == CONST_NONE_UPGRADE_CHANNEL:
+            warning_message = (
+                "Since auto-upgrade-channel is set to none, cluster kubernetesVersion will be set to the value of "
+                "currentKubernetesVersion, all agent pools orchestratorVersion will be set to the value of "
+                "currentOrchestratorVersion respectively. Continue?"
+            )
+            if not self.context.get_yes() and not prompt_y_n(warning_message, default="n"):
+                raise DecoratorEarlyExitException()
+
+            # Set kubernetes version to match the current kubernetes version if it has a value
+            if mc.current_kubernetes_version:
+                mc.kubernetes_version = mc.current_kubernetes_version
+
+            # Set orchestrator version for each agent pool to match the current orchestrator version if it has a value
+            for agent_pool in mc.agent_pool_profiles:
+                if agent_pool.current_orchestrator_version:
+                    agent_pool.orchestrator_version = agent_pool.current_orchestrator_version
+
         return mc
 
     def check_is_postprocessing_required(self, mc: ManagedCluster) -> bool: