此示例会创建一个具有 Debian 11 操作系统的新 Spot 虚拟机实例。Spot 虚拟机是一种可随时抢占的虚拟机类型，但与常规虚拟机相比，Spot 虚拟机的折扣力度很大。此示例演示了如何使用 Compute Engine API 创建 Spot 虚拟机实例。
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如需查看包含此代码示例的详细文档，请参阅以下内容：
代码示例
Go
试用此示例之前，请按照《Compute Engine 快速入门：使用客户端库》中的 Go 设置说明进行操作。 如需了解详情，请参阅 Compute Engine Go API 参考文档。
如需向 Compute Engine 进行身份验证，请设置应用默认凭据。 如需了解详情，请参阅为本地开发环境设置身份验证。
import (
"context"
"fmt"
"io"
compute "cloud.google.com/go/compute/apiv1"
"cloud.google.com/go/compute/apiv1/computepb"
"google.golang.org/protobuf/proto"
)
// createSpotInstance creates a new Spot VM instance with Debian 10 operating system.
func createSpotInstance(w io.Writer, projectID, zone, instanceName string) error {
// projectID := "your_project_id"
// zone := "europe-central2-b"
// instanceName := "your_instance_name"
ctx := context.Background()
imagesClient, err := compute.NewImagesRESTClient(ctx)
if err != nil {
return fmt.Errorf("NewImagesRESTClient: %w", err)
}
defer imagesClient.Close()
instancesClient, err := compute.NewInstancesRESTClient(ctx)
if err != nil {
return fmt.Errorf("NewInstancesRESTClient: %w", err)
}
defer instancesClient.Close()
req := &computepb.GetFromFamilyImageRequest{
Project: "debian-cloud",
Family: "debian-11",
}
image, err := imagesClient.GetFromFamily(ctx, req)
if err != nil {
return fmt.Errorf("getImageFromFamily: %w", err)
}
diskType := fmt.Sprintf("zones/%s/diskTypes/pd-standard", zone)
disks := []*computepb.AttachedDisk{
{
AutoDelete: proto.Bool(true),
Boot: proto.Bool(true),
InitializeParams: &computepb.AttachedDiskInitializeParams{
DiskSizeGb: proto.Int64(10),
DiskType: proto.String(diskType),
SourceImage: proto.String(image.GetSelfLink()),
},
Type: proto.String(computepb.AttachedDisk_PERSISTENT.String()),
},
}
req2 := &computepb.InsertInstanceRequest{
Project: projectID,
Zone: zone,
InstanceResource: &computepb.Instance{
Name: proto.String(instanceName),
Disks: disks,
MachineType: proto.String(fmt.Sprintf("zones/%s/machineTypes/%s", zone, "n1-standard-1")),
NetworkInterfaces: []*computepb.NetworkInterface{
{
Name: proto.String("global/networks/default"),
},
},
Scheduling: &computepb.Scheduling{
ProvisioningModel: proto.String(computepb.Scheduling_SPOT.String()),
},
},
}
op, err := instancesClient.Insert(ctx, req2)
if err != nil {
return fmt.Errorf("insert: %w", err)
}
if err = op.Wait(ctx); err != nil {
return fmt.Errorf("unable to wait for the operation: %w", err)
}
instance, err := instancesClient.Get(ctx, &computepb.GetInstanceRequest{
Project: projectID,
Zone: zone,
Instance: instanceName,
})
if err != nil {
return fmt.Errorf("createInstance: %w", err)
}
fmt.Fprintf(w, "Instance created: %v\n", instance)
return nil
}
Java
试用此示例之前，请按照《Compute Engine 快速入门：使用客户端库》中的 Java 设置说明进行操作。 如需了解详情，请参阅 Compute Engine Java API 参考文档。
如需向 Compute Engine 进行身份验证，请设置应用默认凭据。 如需了解详情，请参阅为本地开发环境设置身份验证。
import com.google.cloud.compute.v1.AccessConfig;
import com.google.cloud.compute.v1.AccessConfig.Type;
import com.google.cloud.compute.v1.Address.NetworkTier;
import com.google.cloud.compute.v1.AttachedDisk;
import com.google.cloud.compute.v1.AttachedDiskInitializeParams;
import com.google.cloud.compute.v1.ImagesClient;
import com.google.cloud.compute.v1.InsertInstanceRequest;
import com.google.cloud.compute.v1.Instance;
import com.google.cloud.compute.v1.InstancesClient;
import com.google.cloud.compute.v1.NetworkInterface;
import com.google.cloud.compute.v1.Scheduling;
import com.google.cloud.compute.v1.Scheduling.ProvisioningModel;
import java.io.IOException;
import java.util.UUID;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
public class CreateSpotVm {
public static void main(String[] args)
throws IOException, ExecutionException, InterruptedException, TimeoutException {
// TODO(developer): Replace these variables before running the sample.
// Project ID or project number of the Google Cloud project you want to use.
String projectId = "your-project-id";
// Name of the virtual machine to check.
String instanceName = "your-instance-name";
// Name of the zone you want to use. For example: "us-west3-b"
String zone = "your-zone";
createSpotInstance(projectId, instanceName, zone);
}
// Create a new Spot VM instance with Debian 11 operating system.
public static Instance createSpotInstance(String projectId, String instanceName, String zone)
throws IOException, ExecutionException, InterruptedException, TimeoutException {
String image;
// Initialize client that will be used to send requests. This client only needs to be created
// once, and can be reused for multiple requests.
try (ImagesClient imagesClient = ImagesClient.create()) {
image = imagesClient.getFromFamily("debian-cloud", "debian-11").getSelfLink();
}
AttachedDisk attachedDisk = buildAttachedDisk(image, zone);
String machineTypes = String.format("zones/%s/machineTypes/%s", zone, "n1-standard-1");
// Send an instance creation request to the Compute Engine API and wait for it to complete.
Instance instance =
createInstance(projectId, zone, instanceName, attachedDisk, true, machineTypes, false);
System.out.printf("Spot instance '%s' has been created successfully", instance.getName());
return instance;
}
// disks: a list of compute_v1.AttachedDisk objects describing the disks
// you want to attach to your new instance.
// machine_type: machine type of the VM being created. This value uses the
// following format: "zones/{zone}/machineTypes/{type_name}".
// For example: "zones/europe-west3-c/machineTypes/f1-micro"
// external_access: boolean flag indicating if the instance should have an external IPv4
// address assigned.
// spot: boolean value indicating if the new instance should be a Spot VM or not.
private static Instance createInstance(String projectId, String zone, String instanceName,
AttachedDisk disk, boolean isSpot, String machineType,
boolean externalAccess)
throws IOException, ExecutionException, InterruptedException, TimeoutException {
// Initialize client that will be used to send requests. This client only needs to be created
// once, and can be reused for multiple requests.
try (InstancesClient client = InstancesClient.create()) {
Instance instanceResource =
buildInstanceResource(instanceName, disk, machineType, externalAccess, isSpot);
InsertInstanceRequest build = InsertInstanceRequest.newBuilder()
.setProject(projectId)
.setRequestId(UUID.randomUUID().toString())
.setZone(zone)
.setInstanceResource(instanceResource)
.build();
client.insertCallable().futureCall(build).get(60, TimeUnit.SECONDS);
return client.get(projectId, zone, instanceName);
}
}
private static Instance buildInstanceResource(String instanceName, AttachedDisk disk,
String machineType, boolean externalAccess,
boolean isSpot) {
NetworkInterface networkInterface =
networkInterface(externalAccess);
Instance.Builder builder = Instance.newBuilder()
.setName(instanceName)
.addDisks(disk)
.setMachineType(machineType)
.addNetworkInterfaces(networkInterface);
if (isSpot) {
// Set the Spot VM setting
Scheduling.Builder scheduling = builder.getScheduling()
.toBuilder()
.setProvisioningModel(ProvisioningModel.SPOT.name())
.setInstanceTerminationAction("STOP");
builder.setScheduling(scheduling);
}
return builder.build();
}
private static NetworkInterface networkInterface(boolean externalAccess) {
NetworkInterface.Builder build = NetworkInterface.newBuilder()
.setNetwork("global/networks/default");
if (externalAccess) {
AccessConfig.Builder accessConfig = AccessConfig.newBuilder()
.setType(Type.ONE_TO_ONE_NAT.name())
.setName("External NAT")
.setNetworkTier(NetworkTier.PREMIUM.name());
build.addAccessConfigs(accessConfig.build());
}
return build.build();
}
private static AttachedDisk buildAttachedDisk(String sourceImage, String zone) {
AttachedDiskInitializeParams initializeParams = AttachedDiskInitializeParams.newBuilder()
.setSourceImage(sourceImage)
.setDiskSizeGb(10)
.setDiskType(String.format("zones/%s/diskTypes/pd-standard", zone))
.build();
return AttachedDisk.newBuilder()
.setInitializeParams(initializeParams)
// Remember to set auto_delete to True if you want the disk to be deleted
// when you delete your VM instance.
.setAutoDelete(true)
.setBoot(true)
.build();
}
}Python
试用此示例之前，请按照《Compute Engine 快速入门：使用客户端库》中的 Python 设置说明进行操作。 如需了解详情，请参阅 Compute Engine Python API 参考文档。
如需向 Compute Engine 进行身份验证，请设置应用默认凭据。 如需了解详情，请参阅为本地开发环境设置身份验证。
from __future__ import annotations
import re
import sys
from typing import Any
import warnings
from google.api_core.extended_operation import ExtendedOperation
from google.cloud import compute_v1
def get_image_from_family(project: str, family: str) -> compute_v1.Image:
"""
Retrieve the newest image that is part of a given family in a project.
Args:
project: project ID or project number of the Cloud project you want to get image from.
family: name of the image family you want to get image from.
Returns:
An Image object.
"""
image_client = compute_v1.ImagesClient()
# List of public operating system (OS) images: https://cloud.google.com/compute/docs/images/os-details
newest_image = image_client.get_from_family(project=project, family=family)
return newest_image
def disk_from_image(
disk_type: str,
disk_size_gb: int,
boot: bool,
source_image: str,
auto_delete: bool = True,
) -> compute_v1.AttachedDisk:
"""
Create an AttachedDisk object to be used in VM instance creation. Uses an image as the
source for the new disk.
Args:
disk_type: the type of disk you want to create. This value uses the following format:
"zones/{zone}/diskTypes/(pd-standard|pd-ssd|pd-balanced|pd-extreme)".
For example: "zones/us-west3-b/diskTypes/pd-ssd"
disk_size_gb: size of the new disk in gigabytes
boot: boolean flag indicating whether this disk should be used as a boot disk of an instance
source_image: source image to use when creating this disk. You must have read access to this disk. This can be one
of the publicly available images or an image from one of your projects.
This value uses the following format: "projects/{project_name}/global/images/{image_name}"
auto_delete: boolean flag indicating whether this disk should be deleted with the VM that uses it
Returns:
AttachedDisk object configured to be created using the specified image.
"""
boot_disk = compute_v1.AttachedDisk()
initialize_params = compute_v1.AttachedDiskInitializeParams()
initialize_params.source_image = source_image
initialize_params.disk_size_gb = disk_size_gb
initialize_params.disk_type = disk_type
boot_disk.initialize_params = initialize_params
# Remember to set auto_delete to True if you want the disk to be deleted when you delete
# your VM instance.
boot_disk.auto_delete = auto_delete
boot_disk.boot = boot
return boot_disk
def wait_for_extended_operation(
operation: ExtendedOperation, verbose_name: str = "operation", timeout: int = 300
) -> Any:
"""
Waits 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 create_instance(
project_id: str,
zone: str,
instance_name: str,
disks: list[compute_v1.AttachedDisk],
machine_type: str = "n1-standard-1",
network_link: str = "global/networks/default",
subnetwork_link: str = None,
internal_ip: str = None,
external_access: bool = False,
external_ipv4: str = None,
accelerators: list[compute_v1.AcceleratorConfig] = None,
preemptible: bool = False,
spot: bool = False,
instance_termination_action: str = "STOP",
custom_hostname: str = None,
delete_protection: bool = False,
) -> compute_v1.Instance:
"""
Send an instance creation request to the Compute Engine API and wait for it to complete.
Args:
project_id: project ID or project number of the Cloud project you want to use.
zone: name of the zone to create the instance in. For example: "us-west3-b"
instance_name: name of the new virtual machine (VM) instance.
disks: a list of compute_v1.AttachedDisk objects describing the disks
you want to attach to your new instance.
machine_type: machine type of the VM being created. This value uses the
following format: "zones/{zone}/machineTypes/{type_name}".
For example: "zones/europe-west3-c/machineTypes/f1-micro"
network_link: name of the network you want the new instance to use.
For example: "global/networks/default" represents the network
named "default", which is created automatically for each project.
subnetwork_link: name of the subnetwork you want the new instance to use.
This value uses the following format:
"regions/{region}/subnetworks/{subnetwork_name}"
internal_ip: internal IP address you want to assign to the new instance.
By default, a free address from the pool of available internal IP addresses of
used subnet will be used.
external_access: boolean flag indicating if the instance should have an external IPv4
address assigned.
external_ipv4: external IPv4 address to be assigned to this instance. If you specify
an external IP address, it must live in the same region as the zone of the instance.
This setting requires `external_access` to be set to True to work.
accelerators: a list of AcceleratorConfig objects describing the accelerators that will
be attached to the new instance.
preemptible: boolean value indicating if the new instance should be preemptible
or not. Preemptible VMs have been deprecated and you should now use Spot VMs.
spot: boolean value indicating if the new instance should be a Spot VM or not.
instance_termination_action: What action should be taken once a Spot VM is terminated.
Possible values: "STOP", "DELETE"
custom_hostname: Custom hostname of the new VM instance.
Custom hostnames must conform to RFC 1035 requirements for valid hostnames.
delete_protection: boolean value indicating if the new virtual machine should be
protected against deletion or not.
Returns:
Instance object.
"""
instance_client = compute_v1.InstancesClient()
# Use the network interface provided in the network_link argument.
network_interface = compute_v1.NetworkInterface()
network_interface.network = network_link
if subnetwork_link:
network_interface.subnetwork = subnetwork_link
if internal_ip:
network_interface.network_i_p = internal_ip
if external_access:
access = compute_v1.AccessConfig()
access.type_ = compute_v1.AccessConfig.Type.ONE_TO_ONE_NAT.name
access.name = "External NAT"
access.network_tier = access.NetworkTier.PREMIUM.name
if external_ipv4:
access.nat_i_p = external_ipv4
network_interface.access_configs = [access]
# Collect information into the Instance object.
instance = compute_v1.Instance()
instance.network_interfaces = [network_interface]
instance.name = instance_name
instance.disks = disks
if re.match(r"^zones/[a-z\d\-]+/machineTypes/[a-z\d\-]+$", machine_type):
instance.machine_type = machine_type
else:
instance.machine_type = f"zones/{zone}/machineTypes/{machine_type}"
instance.scheduling = compute_v1.Scheduling()
if accelerators:
instance.guest_accelerators = accelerators
instance.scheduling.on_host_maintenance = (
compute_v1.Scheduling.OnHostMaintenance.TERMINATE.name
)
if preemptible:
# Set the preemptible setting
warnings.warn(
"Preemptible VMs are being replaced by Spot VMs.", DeprecationWarning
)
instance.scheduling = compute_v1.Scheduling()
instance.scheduling.preemptible = True
if spot:
# Set the Spot VM setting
instance.scheduling.provisioning_model = (
compute_v1.Scheduling.ProvisioningModel.SPOT.name
)
instance.scheduling.instance_termination_action = instance_termination_action
if custom_hostname is not None:
# Set the custom hostname for the instance
instance.hostname = custom_hostname
if delete_protection:
# Set the delete protection bit
instance.deletion_protection = True
# Prepare the request to insert an instance.
request = compute_v1.InsertInstanceRequest()
request.zone = zone
request.project = project_id
request.instance_resource = instance
# Wait for the create operation to complete.
print(f"Creating the {instance_name} instance in {zone}...")
operation = instance_client.insert(request=request)
wait_for_extended_operation(operation, "instance creation")
print(f"Instance {instance_name} created.")
return instance_client.get(project=project_id, zone=zone, instance=instance_name)
def create_spot_instance(
project_id: str, zone: str, instance_name: str
) -> compute_v1.Instance:
"""
Create a new Spot VM instance with Debian 10 operating system.
Args:
project_id: project ID or project number of the Cloud project you want to use.
zone: name of the zone to create the instance in. For example: "us-west3-b"
instance_name: name of the new virtual machine (VM) instance.
Returns:
Instance object.
"""
newest_debian = get_image_from_family(project="debian-cloud", family="debian-11")
disk_type = f"zones/{zone}/diskTypes/pd-standard"
disks = [disk_from_image(disk_type, 10, True, newest_debian.self_link)]
instance = create_instance(project_id, zone, instance_name, disks, spot=True)
return instance
后续步骤
如需搜索和过滤其他 Google Cloud 产品的代码示例，请参阅 Google Cloud 示例浏览器。