Laufwerk aus einem Snapshot erstellen

Zonales Laufwerk aus einem Snapshot erstellen

Weitere Informationen

Eine ausführliche Dokumentation, die dieses Codebeispiel enthält, finden Sie hier:

Codebeispiel

Go

Bevor Sie dieses Beispiel anwenden, folgen Sie den Schritten zur Einrichtung von Go in der Compute Engine-Kurzanleitung zur Verwendung von Clientbibliotheken. Weitere Informationen finden Sie in der Referenzdokumentation zur Compute Engine Go API.

Richten Sie die Standardanmeldedaten für Anwendungen ein, um sich bei Compute Engine zu authentifizieren. Weitere Informationen finden Sie unter Authentifizierung für eine lokale Entwicklungsumgebung einrichten.

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import (
	"context"
	"fmt"
	"io"

	compute "cloud.google.com/go/compute/apiv1"
	computepb "google.golang.org/genproto/googleapis/cloud/compute/v1"
	"google.golang.org/protobuf/proto"
)

// createDiskFromSnapshot creates a new disk in a project in given zone.
func createDiskFromSnapshot(
	w io.Writer,
	projectID, zone, diskName, diskType, snapshotLink string,
	diskSizeGb int64,
) error {
	// projectID := "your_project_id"
	// zone := "us-west3-b" // should match diskType below
	// diskName := "your_disk_name"
	// diskType := "zones/us-west3-b/diskTypes/pd-ssd"
	// snapshotLink := "projects/your_project_id/global/snapshots/snapshot_name"
	// diskSizeGb := 120

	ctx := context.Background()
	disksClient, err := compute.NewDisksRESTClient(ctx)
	if err != nil {
		return fmt.Errorf("NewDisksRESTClient: %w", err)
	}
	defer disksClient.Close()

	req := &computepb.InsertDiskRequest{
		Project: projectID,
		Zone:    zone,
		DiskResource: &computepb.Disk{
			Name:           proto.String(diskName),
			Zone:           proto.String(zone),
			Type:           proto.String(diskType),
			SourceSnapshot: proto.String(snapshotLink),
			SizeGb:         proto.Int64(diskSizeGb),
		},
	}

	op, err := disksClient.Insert(ctx, req)
	if err != nil {
		return fmt.Errorf("unable to create disk: %w", err)
	}

	if err = op.Wait(ctx); err != nil {
		return fmt.Errorf("unable to wait for the operation: %w", err)
	}

	fmt.Fprintf(w, "Disk created\n")

	return nil
}

Java

Bevor Sie dieses Beispiel anwenden, folgen Sie den Schritten zur Einrichtung von Java in der Compute Engine-Kurzanleitung zur Verwendung von Clientbibliotheken. Weitere Informationen finden Sie in der Referenzdokumentation zur Compute Engine Java API.

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import com.google.cloud.compute.v1.Disk;
import com.google.cloud.compute.v1.DisksClient;
import com.google.cloud.compute.v1.InsertDiskRequest;
import com.google.cloud.compute.v1.Operation;
import java.io.IOException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

public class CreateDiskFromSnapshot {

  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 in which you want to create the disk.
    String zone = "europe-central2-b";

    // Name of the disk you want to create.
    String diskName = "YOUR_DISK_NAME";

    // 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"
    String diskType = String.format("zones/%s/diskTypes/pd-ssd", zone);

    // Size of the new disk in gigabytes.
    long diskSizeGb = 10;

    // The full path and name of the snapshot that you want to use as the source for the new disk.
    // This value uses the following format:
    // "projects/{projectName}/global/snapshots/{snapshotName}"
    String snapshotLink = String.format("projects/%s/global/snapshots/%s", projectId,
        "SNAPSHOT_NAME");

    createDiskFromSnapshot(projectId, zone, diskName, diskType, diskSizeGb, snapshotLink);
  }

  // Creates a new disk in a project in given zone, using a snapshot.
  public static void createDiskFromSnapshot(String projectId, String zone, String diskName,
      String diskType, long diskSizeGb, String snapshotLink)
      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 `disksClient.close()` method on the client to safely
    // clean up any remaining background resources.
    try (DisksClient disksClient = DisksClient.create()) {

      // Set the disk properties and the source snapshot.
      Disk disk = Disk.newBuilder()
          .setName(diskName)
          .setZone(zone)
          .setSizeGb(diskSizeGb)
          .setType(diskType)
          .setSourceSnapshot(snapshotLink)
          .build();

      // Create the insert disk request.
      InsertDiskRequest insertDiskRequest = InsertDiskRequest.newBuilder()
          .setProject(projectId)
          .setZone(zone)
          .setDiskResource(disk)
          .build();

      // Wait for the create disk operation to complete.
      Operation response = disksClient.insertAsync(insertDiskRequest)
          .get(3, TimeUnit.MINUTES);

      if (response.hasError()) {
        System.out.println("Disk creation failed!" + response);
        return;
      }
      System.out.println("Disk created. Operation Status: " + response.getStatus());
    }
  }
}

Node.js

Bevor Sie dieses Beispiel anwenden, folgen Sie den Schritten zur Einrichtung von Node.js in der Compute Engine-Kurzanleitung zur Verwendung von Clientbibliotheken. Weitere Informationen finden Sie in der Referenzdokumentation zur Compute Engine Node.js API.

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/**
 * TODO(developer): Uncomment and replace these variables before running the sample.
 */
// const projectId = 'YOUR_PROJECT_ID';
// const zone = 'europe-central2-b';
// const diskName = 'YOUR_DISK_NAME';
// const diskType = 'zones/us-west3-b/diskTypes/pd-ssd';
// const diskSizeGb = 10;
// const snapshotLink = 'projects/project_name/global/snapshots/snapshot_name';

const compute = require('@google-cloud/compute');

async function createDiskFromSnapshot() {
  const disksClient = new compute.DisksClient();

  const [response] = await disksClient.insert({
    project: projectId,
    zone,
    diskResource: {
      sizeGb: diskSizeGb,
      name: diskName,
      zone,
      type: diskType,
      sourceSnapshot: snapshotLink,
    },
  });
  let operation = response.latestResponse;
  const operationsClient = new compute.ZoneOperationsClient();

  // Wait for the create disk operation to complete.
  while (operation.status !== 'DONE') {
    [operation] = await operationsClient.wait({
      operation: operation.name,
      project: projectId,
      zone: operation.zone.split('/').pop(),
    });
  }

  console.log('Disk created.');
}

createDiskFromSnapshot();

Python

Bevor Sie dieses Beispiel anwenden, folgen Sie den Schritten zur Einrichtung von Python in der Compute Engine-Kurzanleitung zur Verwendung von Clientbibliotheken. Weitere Informationen finden Sie in der Referenzdokumentation zur Compute Engine Python API.

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from __future__ import annotations

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:
    """
    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_disk_from_snapshot(
    project_id: str,
    zone: str,
    disk_name: str,
    disk_type: str,
    disk_size_gb: int,
    snapshot_link: str,
) -> compute_v1.Disk:
    """
    Creates a new disk in a project in given zone.

    Args:
        project_id: project ID or project number of the Cloud project you want to use.
        zone: name of the zone in which you want to create the disk.
        disk_name: name of the disk you want to create.
        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
        snapshot_link: a link to the snapshot you want to use as a source for the new disk.
            This value uses the following format: "projects/{project_name}/global/snapshots/{snapshot_name}"

    Returns:
        An unattached Disk instance.
    """
    disk_client = compute_v1.DisksClient()
    disk = compute_v1.Disk()
    disk.zone = zone
    disk.size_gb = disk_size_gb
    disk.source_snapshot = snapshot_link
    disk.type_ = disk_type
    disk.name = disk_name
    operation = disk_client.insert(project=project_id, zone=zone, disk_resource=disk)

    wait_for_extended_operation(operation, "disk creation")

    return disk_client.get(project=project_id, zone=zone, disk=disk_name)

Nächste Schritte

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