通过快照创建磁盘并将磁盘挂接到新虚拟机。
深入探索
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"
computepb "cloud.google.com/go/compute/apiv1/computepb"
"google.golang.org/protobuf/proto"
)
// createWithExistingDisks create a new VM instance using selected disks.
// The first disk in diskNames will be used as boot disk.
func createWithExistingDisks(
w io.Writer,
projectID, zone, instanceName string,
diskNames []string,
) error {
// projectID := "your_project_id"
// zone := "europe-central2-b"
// instanceName := "your_instance_name"
// diskNames := []string{"boot_disk", "disk1", "disk2"}
ctx := context.Background()
instancesClient, err := compute.NewInstancesRESTClient(ctx)
if err != nil {
return fmt.Errorf("NewInstancesRESTClient: %w", err)
}
defer instancesClient.Close()
disksClient, err := compute.NewDisksRESTClient(ctx)
if err != nil {
return fmt.Errorf("NewDisksRESTClient: %w", err)
}
defer disksClient.Close()
disks := [](*computepb.Disk){}
for _, diskName := range diskNames {
reqDisk := &computepb.GetDiskRequest{
Project: projectID,
Zone: zone,
Disk: diskName,
}
disk, err := disksClient.Get(ctx, reqDisk)
if err != nil {
return fmt.Errorf("unable to get disk: %w", err)
}
disks = append(disks, disk)
}
attachedDisks := [](*computepb.AttachedDisk){}
for _, disk := range disks {
attachedDisk := &computepb.AttachedDisk{
Source: proto.String(disk.GetSelfLink()),
}
attachedDisks = append(attachedDisks, attachedDisk)
}
attachedDisks[0].Boot = proto.Bool(true)
instanceResource := &computepb.Instance{
Name: proto.String(instanceName),
Disks: attachedDisks,
MachineType: proto.String(fmt.Sprintf("zones/%s/machineTypes/n1-standard-1", zone)),
NetworkInterfaces: []*computepb.NetworkInterface{
{
Name: proto.String("global/networks/default"),
},
},
}
req := &computepb.InsertInstanceRequest{
Project: projectID,
Zone: zone,
InstanceResource: instanceResource,
}
op, err := instancesClient.Insert(ctx, req)
if err != nil {
return fmt.Errorf("unable to create instance: %w", err)
}
if err = op.Wait(ctx); err != nil {
return fmt.Errorf("unable to wait for the operation: %w", err)
}
fmt.Fprintf(w, "Instance created\n")
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.AttachedDisk;
import com.google.cloud.compute.v1.Disk;
import com.google.cloud.compute.v1.DisksClient;
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.Operation;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
public class CreateInstanceWithExistingDisks {
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 Cloud project you want to use.
String projectId = "YOUR_PROJECT_ID";
// Name of the zone to create the instance in. For example: "us-west3-b"
String zone = "europe-central2-b";
// Name of the new virtual machine (VM) instance.
String instanceName = "YOUR_INSTANCE_NAME";
// Array of disk names to be attached to the new virtual machine.
// First disk in this list will be used as the boot disk.
List<String> diskNames = List.of("your-boot-disk", "another-disk1", "another-disk2");
createInstanceWithExistingDisks(projectId, zone, instanceName, diskNames);
}
// Create a new VM instance using the selected disks.
// The first disk in diskNames will be used as the boot disk.
public static void createInstanceWithExistingDisks(String projectId, String zone,
String instanceName, List<String> diskNames)
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. After completing all of your requests, call
// the `instancesClient.close()` method on the client to safely
// clean up any remaining background resources.
try (InstancesClient instancesClient = InstancesClient.create();
DisksClient disksClient = DisksClient.create()) {
if (diskNames.size() == 0) {
throw new Error("At least one disk should be provided");
}
// Create the list of attached disks to be used in instance creation.
List<AttachedDisk> attachedDisks = new ArrayList<>();
for (int i = 0; i < diskNames.size(); i++) {
String diskName = diskNames.get(i);
Disk disk = disksClient.get(projectId, zone, diskName);
AttachedDisk attDisk = null;
if (i == 0) {
// Make the first disk in the list as the boot disk.
attDisk = AttachedDisk.newBuilder()
.setSource(disk.getSelfLink())
.setBoot(true)
.build();
} else {
attDisk = AttachedDisk.newBuilder()
.setSource(disk.getSelfLink())
.build();
}
attachedDisks.add(attDisk);
}
// Create the instance.
Instance instance = Instance.newBuilder()
.setName(instanceName)
// Add the attached disks to the instance.
.addAllDisks(attachedDisks)
.setMachineType(String.format("zones/%s/machineTypes/n1-standard-1", zone))
.addNetworkInterfaces(
NetworkInterface.newBuilder().setName("global/networks/default").build())
.build();
// Create the insert instance request.
InsertInstanceRequest insertInstanceRequest = InsertInstanceRequest.newBuilder()
.setProject(projectId)
.setZone(zone)
.setInstanceResource(instance)
.build();
// Wait for the create operation to complete.
Operation response = instancesClient.insertAsync(insertInstanceRequest)
.get(3, TimeUnit.MINUTES);
if (response.hasError()) {
System.out.println("Instance creation failed!" + response);
return;
}
System.out.println("Operation Status: " + response.getStatus());
}
}
}Node.js
试用此示例之前，请按照《Compute Engine 快速入门：使用客户端库》中的 Node.js 设置说明进行操作。 如需了解详情，请参阅 Compute Engine Node.js 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。
/**
* TODO(developer): Uncomment and replace these variables before running the sample.
*/
// const projectId = 'YOUR_PROJECT_ID';
// const zone = 'europe-central2-b';
// const instanceName = 'YOUR_INSTANCE_NAME';
// const diskNames = ['boot_disk', 'disk1', 'disk2'];
const compute = require('@google-cloud/compute');
async function createWithExistingDisks() {
const instancesClient = new compute.InstancesClient();
const disksClient = new compute.DisksClient();
if (diskNames.length < 1) {
throw new Error('At least one disk should be provided');
}
const disks = [];
for (const diskName of diskNames) {
const [disk] = await disksClient.get({
project: projectId,
zone,
disk: diskName,
});
disks.push(disk);
}
const attachedDisks = [];
for (const disk of disks) {
attachedDisks.push({
source: disk.selfLink,
});
}
attachedDisks[0].boot = true;
const [response] = await instancesClient.insert({
project: projectId,
zone,
instanceResource: {
name: instanceName,
disks: attachedDisks,
machineType: `zones/${zone}/machineTypes/n1-standard-1`,
networkInterfaces: [
{
name: 'global/networks/default',
},
],
},
});
let operation = response.latestResponse;
const operationsClient = new compute.ZoneOperationsClient();
// Wait for the create operation to complete.
while (operation.status !== 'DONE') {
[operation] = await operationsClient.wait({
operation: operation.name,
project: projectId,
zone: operation.zone.split('/').pop(),
});
}
console.log('Instance created.');
}
createWithExistingDisks();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_disk(project_id: str, zone: str, disk_name: str) -> compute_v1.Disk:
"""
Gets a disk from a project.
Args:
project_id: project ID or project number of the Cloud project you want to use.
zone: name of the zone where the disk exists.
disk_name: name of the disk you want to retrieve.
"""
disk_client = compute_v1.DisksClient()
return disk_client.get(project=project_id, zone=zone, disk=disk_name)
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_with_existing_disks(
project_id: str, zone: str, instance_name: str, disk_names: list[str]
) -> compute_v1.Instance:
"""
Create a new VM instance using selected disks. The first disk in disk_names will
be used as boot disk.
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.
disk_names: list of disk names to be attached to the new virtual machine.
First disk in this list will be used as the boot device.
Returns:
Instance object.
"""
assert len(disk_names) >= 1
disks = [get_disk(project_id, zone, disk_name) for disk_name in disk_names]
attached_disks = []
for disk in disks:
adisk = compute_v1.AttachedDisk()
adisk.source = disk.self_link
attached_disks.append(adisk)
attached_disks[0].boot = True
instance = create_instance(project_id, zone, instance_name, attached_disks)
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。