Memasang disk regional ke instance VM Compute Engine dalam mode baca-tulis

Pasang disk regional ke satu virtual machine yang berjalan di Google Compute Engine. Disk juga harus dipasang oleh sistem operasi sebelum dapat digunakan. Disk terpasang dalam mode baca-tulis. Disk hanya dapat dipasang ke satu instance VM pada satu waktu.

Contoh kode

Go

Sebelum mencoba contoh ini, ikuti petunjuk penyiapan Go di panduan memulai Compute Engine menggunakan library klien. Untuk informasi selengkapnya, lihat dokumentasi referensi API Go Compute Engine.

Untuk melakukan autentikasi ke Compute Engine, siapkan Kredensial Default Aplikasi. Untuk mengetahui informasi selengkapnya, baca Menyiapkan autentikasi untuk lingkungan pengembangan lokal.

import (
	"context"
	"fmt"
	"io"

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

// Attaches the provided regional disk in read-write mode to the given VM
func attachRegionalDisk(w io.Writer, projectID, zone, instanceName, diskUrl string) error {
	// projectID := "your_project_id"
	// zone := "us-west3-a" // refers to the instance, not the disk
	// instanceName := "your_instance_name"
	// diskUrl := "projects/your_project/regions/europe-west3/disks/your_disk"

	ctx := context.Background()
	instancesClient, err := compute.NewInstancesRESTClient(ctx)
	if err != nil {
		return err
	}
	defer instancesClient.Close()

	req := &computepb.AttachDiskInstanceRequest{
		AttachedDiskResource: &computepb.AttachedDisk{
			Source: &diskUrl,
		},
		Instance: instanceName,
		Project:  projectID,
		Zone:     zone,
	}

	op, err := instancesClient.AttachDisk(ctx, req)
	if err != nil {
		return fmt.Errorf("unable to attach 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 attached\n")

	return nil
}

Java

Sebelum mencoba contoh ini, ikuti petunjuk penyiapan Java di panduan memulai Compute Engine menggunakan library klien. Untuk informasi selengkapnya, lihat dokumentasi referensi API Java Compute Engine.

Untuk melakukan autentikasi ke Compute Engine, siapkan Kredensial Default Aplikasi. Untuk mengetahui informasi selengkapnya, baca Menyiapkan autentikasi untuk lingkungan pengembangan lokal.

import com.google.cloud.compute.v1.AttachDiskInstanceRequest;
import com.google.cloud.compute.v1.AttachedDisk;
import com.google.cloud.compute.v1.InstancesClient;
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 AttachDisk {

  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 the instance you want to use resides.
    String zone = "zone-name";

    // Name of the compute instance you want to attach a disk to.
    String instanceName = "instance-name";

    // Full or partial URL of a persistent disk that you want to attach. This can be either
    // be a regional or zonal disk.
    // Valid formats:
    //     * https://www.googleapis.com/compute/v1/projects/{project}/zones/{zone}/disks/{disk_name}
    //     * /projects/{project}/zones/{zone}/disks/{disk_name}
    //     * /projects/{project}/regions/{region}/disks/{disk_name}
    String diskLink = String.format("/projects/%s/zones/%s/disks/%s",
        "project", "zone", "disk_name");

    // Specifies in what mode the disk will be attached to the instance. Available options are
    // `READ_ONLY` and `READ_WRITE`. Disk in `READ_ONLY` mode can be attached to
    // multiple instances at once.
    String mode = "READ_ONLY";

    attachDisk(projectId, zone, instanceName, diskLink, mode);
  }

  // Attaches a non-boot persistent disk to a specified compute instance.
  // The disk might be zonal or regional.
  // You need following permissions to execute this action:
  // https://cloud.google.com/compute/docs/disks/regional-persistent-disk#expandable-1
  public static void attachDisk(String projectId, String zone, String instanceName, String diskLink,
      String mode)
      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()) {

      AttachDiskInstanceRequest attachDiskInstanceRequest = AttachDiskInstanceRequest.newBuilder()
          .setProject(projectId)
          .setZone(zone)
          .setInstance(instanceName)
          .setAttachedDiskResource(AttachedDisk.newBuilder()
              .setSource(diskLink)
              .setMode(mode)
              .build())
          .build();

      Operation response = instancesClient.attachDiskAsync(attachDiskInstanceRequest)
          .get(3, TimeUnit.MINUTES);

      if (response.hasError()) {
        System.out.println("Attach disk failed! " + response);
        return;
      }
      System.out.println("Attach disk - operation status: " + response.getStatus());
    }
  }
}

Python

Sebelum mencoba contoh ini, ikuti petunjuk penyiapan Python di panduan memulai Compute Engine menggunakan library klien. Untuk informasi selengkapnya, lihat dokumentasi referensi API Python Compute Engine.

Untuk melakukan autentikasi ke Compute Engine, siapkan Kredensial Default Aplikasi. Untuk mengetahui informasi selengkapnya, baca Menyiapkan autentikasi untuk lingkungan pengembangan lokal.

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 attach_disk(
    project_id: str, zone: str, instance_name: str, disk_link: str, mode: str
) -> None:
    """
    Attaches a non-boot persistent disk to a specified compute instance. The disk might be zonal or regional.

    You need following permissions to execute this action:
    https://cloud.google.com/compute/docs/disks/regional-persistent-disk#expandable-1

    Args:
        project_id: project ID or project number of the Cloud project you want to use.
        zone:name of the zone in which the instance you want to use resides.
        instance_name: name of the compute instance you want to attach a disk to.
        disk_link: full or partial URL to a persistent disk that you want to attach. This can be either
            regional or zonal disk.
            Expected formats:
                * https://www.googleapis.com/compute/v1/projects/[project]/zones/[zone]/disks/[disk_name]
                * /projects/[project]/zones/[zone]/disks/[disk_name]
                * /projects/[project]/regions/[region]/disks/[disk_name]
        mode: Specifies in what mode the disk will be attached to the instance. Available options are `READ_ONLY`
            and `READ_WRITE`. Disk in `READ_ONLY` mode can be attached to multiple instances at once.
    """
    instances_client = compute_v1.InstancesClient()

    request = compute_v1.AttachDiskInstanceRequest()
    request.project = project_id
    request.zone = zone
    request.instance = instance_name
    request.attached_disk_resource = compute_v1.AttachedDisk()
    request.attached_disk_resource.source = disk_link
    request.attached_disk_resource.mode = mode

    operation = instances_client.attach_disk(request)

    wait_for_extended_operation(operation, "disk attachement")

Langkah selanjutnya

Untuk menelusuri dan memfilter contoh kode untuk produk Google Cloud lainnya, lihat browser contoh Google Cloud.