diff --git a/compute/client_library/ingredients/instances/change_machine_type.py b/compute/client_library/ingredients/instances/change_machine_type.py
new file mode 100644
index 00000000000..2e4f78e10d0
--- /dev/null
+++ b/compute/client_library/ingredients/instances/change_machine_type.py
@@ -0,0 +1,58 @@
+# Copyright 2023 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This is an ingredient file. It is not meant to be run directly. Check the samples/snippets
+# folder for complete code samples that are ready to be used.
+# Disabling flake8 for the ingredients file, as it would fail F821 - undefined name check.
+# flake8: noqa
+
+from google.cloud import compute_v1
+
+
+#
+def change_machine_type(
+ project_id: str,
+ zone: str,
+ instance_name: str,
+ new_machine_type: str
+) -> None:
+ """
+ Changes the machine type of VM. The VM needs to be in the 'TERMINATED' state for this operation to be successful.
+
+ Args:
+ project_id: project ID or project number of the Cloud project you want to use.
+ zone: name of the zone your instance belongs to.
+ instance_name: name of the VM you want to modify.
+ new_machine_type: the new machine type you want to use for the VM.
+ For example: `e2-standard-8`, `e2-custom-4-2048` or `m1-ultramem-40`
+ More about machine types: https://cloud.google.com/compute/docs/machine-resource
+ """
+ client = compute_v1.InstancesClient()
+ instance = client.get(project=project_id, zone=zone, instance=instance_name)
+
+ if instance.status != compute_v1.Instance.Status.TERMINATED.name:
+ raise RuntimeError(f"Only machines in TERMINATED state can have their machine type changed. "
+ f"{instance.name} is in {instance.status}({instance.status_message}) state.")
+
+ machine_type = compute_v1.InstancesSetMachineTypeRequest()
+ machine_type.machine_type = f"projects/{project_id}/zones/{zone}/machineTypes/{new_machine_type}"
+ operation = client.set_machine_type(
+ project=project_id,
+ zone=zone,
+ instance=instance_name,
+ instances_set_machine_type_request_resource=machine_type,
+ )
+
+ wait_for_extended_operation(operation, "changing machine type")
+#
diff --git a/compute/client_library/recipes/instances/change_machine_type.py b/compute/client_library/recipes/instances/change_machine_type.py
new file mode 100644
index 00000000000..20907fbbb2d
--- /dev/null
+++ b/compute/client_library/recipes/instances/change_machine_type.py
@@ -0,0 +1,22 @@
+# Copyright 2023 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# flake8: noqa
+
+#
+#
+
+#
+
+#
+#
diff --git a/compute/client_library/snippets/instances/change_machine_type.py b/compute/client_library/snippets/instances/change_machine_type.py
new file mode 100644
index 00000000000..2b2268d6812
--- /dev/null
+++ b/compute/client_library/snippets/instances/change_machine_type.py
@@ -0,0 +1,114 @@
+# Copyright 2023 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# flake8: noqa
+
+
+# This file is automatically generated. Please do not modify it directly.
+# Find the relevant recipe file in the samples/recipes or samples/ingredients
+# directory and apply your changes there.
+
+
+# [START compute_change_machine_type]
+import sys
+from typing import Any
+
+from google.api_core.extended_operation import ExtendedOperation
+from google.cloud import compute_v1
+
+
+def wait_for_extended_operation(
+ operation: ExtendedOperation, verbose_name: str = "operation", timeout: int = 300
+) -> Any:
+ """
+ This method will wait for the extended (long-running) operation to
+ complete. If the operation is successful, it will return its result.
+ If the operation ends with an error, an exception will be raised.
+ If there were any warnings during the execution of the operation
+ they will be printed to sys.stderr.
+
+ Args:
+ operation: a long-running operation you want to wait on.
+ verbose_name: (optional) a more verbose name of the operation,
+ used only during error and warning reporting.
+ timeout: how long (in seconds) to wait for operation to finish.
+ If None, wait indefinitely.
+
+ Returns:
+ Whatever the operation.result() returns.
+
+ Raises:
+ This method will raise the exception received from `operation.exception()`
+ or RuntimeError if there is no exception set, but there is an `error_code`
+ set for the `operation`.
+
+ In case of an operation taking longer than `timeout` seconds to complete,
+ a `concurrent.futures.TimeoutError` will be raised.
+ """
+ result = operation.result(timeout=timeout)
+
+ if operation.error_code:
+ print(
+ f"Error during {verbose_name}: [Code: {operation.error_code}]: {operation.error_message}",
+ file=sys.stderr,
+ flush=True,
+ )
+ print(f"Operation ID: {operation.name}", file=sys.stderr, flush=True)
+ raise operation.exception() or RuntimeError(operation.error_message)
+
+ if operation.warnings:
+ print(f"Warnings during {verbose_name}:\n", file=sys.stderr, flush=True)
+ for warning in operation.warnings:
+ print(f" - {warning.code}: {warning.message}", file=sys.stderr, flush=True)
+
+ return result
+
+
+def change_machine_type(
+ project_id: str, zone: str, instance_name: str, new_machine_type: str
+) -> None:
+ """
+ Changes the machine type of VM. The VM needs to be in the 'TERMINATED' state for this operation to be successful.
+
+ Args:
+ project_id: project ID or project number of the Cloud project you want to use.
+ zone: name of the zone your instance belongs to.
+ instance_name: name of the VM you want to modify.
+ new_machine_type: the new machine type you want to use for the VM.
+ For example: `e2-standard-8`, `e2-custom-4-2048` or `m1-ultramem-40`
+ More about machine types: https://cloud.google.com/compute/docs/machine-resource
+ """
+ client = compute_v1.InstancesClient()
+ instance = client.get(project=project_id, zone=zone, instance=instance_name)
+
+ if instance.status != compute_v1.Instance.Status.TERMINATED.name:
+ raise RuntimeError(
+ f"Only machines in TERMINATED state can have their machine type changed. "
+ f"{instance.name} is in {instance.status}({instance.status_message}) state."
+ )
+
+ machine_type = compute_v1.InstancesSetMachineTypeRequest()
+ machine_type.machine_type = (
+ f"projects/{project_id}/zones/{zone}/machineTypes/{new_machine_type}"
+ )
+ operation = client.set_machine_type(
+ project=project_id,
+ zone=zone,
+ instance=instance_name,
+ instances_set_machine_type_request_resource=machine_type,
+ )
+
+ wait_for_extended_operation(operation, "changing machine type")
+
+
+# [END compute_change_machine_type]
diff --git a/compute/client_library/snippets/tests/test_instance_start_stop.py b/compute/client_library/snippets/tests/test_instance_start_stop.py
index 8c6efc802de..a93fac9d90e 100644
--- a/compute/client_library/snippets/tests/test_instance_start_stop.py
+++ b/compute/client_library/snippets/tests/test_instance_start_stop.py
@@ -23,6 +23,8 @@
from ..disks.clone_encrypted_disk import create_disk_from_customer_encrypted_disk
from ..disks.delete import delete_disk
+from ..instances.change_machine_type import change_machine_type
+from ..instances.get import get_instance
from ..instances.start import start_instance
from ..instances.start_encrypted import start_instance_with_encryption_key
from ..instances.stop import stop_instance
@@ -187,3 +189,14 @@ def test_clone_encrypted_disk(autodelete_disk_name, compute_encrypted_instance):
encryption_key=KEY_B64)
assert new_disk.name == autodelete_disk_name
+
+
+def test_change_machine_type(compute_instance):
+ assert _get_status(compute_instance) == "RUNNING"
+
+ stop_instance(PROJECT, INSTANCE_ZONE, compute_instance.name)
+
+ assert not get_instance(PROJECT, INSTANCE_ZONE, compute_instance.name).machine_type.endswith("e2-standard-2")
+ change_machine_type(PROJECT, INSTANCE_ZONE, compute_instance.name, "e2-standard-2")
+
+ assert get_instance(PROJECT, INSTANCE_ZONE, compute_instance.name).machine_type.endswith("e2-standard-2")