檢查指定的執行個體是否為 Spot VM

這個範例會檢查指定執行個體是否為 Spot VM。

深入探索

如需包含這個程式碼範例的詳細說明文件，請參閱下列內容：

程式碼範例

Go

在試用這個範例之前，請先按照Go「使用用戶端程式庫的 Compute Engine 快速入門」中的操作說明進行設定。詳情請參閱 Compute Engine Go API 參考說明文件。

如要向 Compute Engine 進行驗證，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。


import (
	"context"
	"fmt"
	"io"

	compute "cloud.google.com/go/compute/apiv1"
	"cloud.google.com/go/compute/apiv1/computepb"
)

// isSpotVM checks if a given instance is a Spot VM or not.
func isSpotVM(w io.Writer, projectID, zone, instanceName string) (bool, error) {
	// projectID := "your_project_id"
	// zone := "europe-central2-b"
	// instanceName := "your_instance_name"
	ctx := context.Background()
	client, err := compute.NewInstancesRESTClient(ctx)
	if err != nil {
		return false, fmt.Errorf("NewInstancesRESTClient: %w", err)
	}
	defer client.Close()

	req := &computepb.GetInstanceRequest{
		Project:  projectID,
		Zone:     zone,
		Instance: instanceName,
	}

	instance, err := client.Get(ctx, req)
	if err != nil {
		return false, fmt.Errorf("GetInstance: %w", err)
	}

	isSpot := instance.GetScheduling().GetProvisioningModel() == computepb.Scheduling_SPOT.String()

	var isSpotMessage string
	if !isSpot {
		isSpotMessage = " not"
	}
	fmt.Fprintf(w, "Instance %s is%s spot\n", instanceName, isSpotMessage)

	return instance.GetScheduling().GetProvisioningModel() == computepb.Scheduling_SPOT.String(), nil
}

Java

在試用這個範例之前，請先按照Java「使用用戶端程式庫的 Compute Engine 快速入門」中的操作說明進行設定。詳情請參閱 Compute Engine Java API 參考說明文件。

如要向 Compute Engine 進行驗證，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。


import com.google.cloud.compute.v1.Instance;
import com.google.cloud.compute.v1.InstancesClient;
import com.google.cloud.compute.v1.Scheduling;
import java.io.IOException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeoutException;

public class CheckIsSpotVm {
  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-route-name";
    // Name of the zone you want to use. For example: "us-west3-b"
    String zone = "your-zone";

    boolean isSpotVm = isSpotVm(projectId, instanceName, zone);
    System.out.printf("Is %s spot VM instance - %s", instanceName, isSpotVm);
  }

  // Check if a given instance is Spot VM or not.
  public static boolean isSpotVm(String projectId, String instanceName, String zone)
          throws IOException {
    // 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 instance = client.get(projectId, zone, instanceName);

      return instance.getScheduling().getProvisioningModel()
              .equals(Scheduling.ProvisioningModel.SPOT.name());
    }
  }
}

Python

在試用這個範例之前，請先按照Python「使用用戶端程式庫的 Compute Engine 快速入門」中的操作說明進行設定。詳情請參閱 Compute Engine Python API 參考說明文件。

如要向 Compute Engine 進行驗證，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

from google.cloud import compute_v1


def is_spot_vm(project_id: str, zone: str, instance_name: str) -> bool:
    """
    Check if a given instance is Spot VM or not.
    Args:
        project_id: project ID or project number of the Cloud project you want to use.
        zone: name of the zone you want to use. For example: "us-west3-b"
        instance_name: name of the virtual machine to check.
    Returns:
        The Spot VM status of the instance.
    """
    instance_client = compute_v1.InstancesClient()
    instance = instance_client.get(
        project=project_id, zone=zone, instance=instance_name
    )
    return (
        instance.scheduling.provisioning_model
        == compute_v1.Scheduling.ProvisioningModel.SPOT.name
    )

後續步驟

如要搜尋及篩選其他 Google Cloud 產品的程式碼範例，請參閱Google Cloud 範例瀏覽器。