Virtual Machine Scale Sets - Start

Service:

Compute

API Version:

2023-03-01

Starts one or more virtual machines in a VM scale set.

POST https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/start?api-version=2023-03-01

URI Parameters

Name	In	Required	Type	Description
resourceGroupName	path	True	string	The name of the resource group.
subscriptionId	path	True	string	Subscription credentials which uniquely identify Microsoft Azure subscription. The subscription ID forms part of the URI for every service call.
vmScaleSetName	path	True	string	The name of the VM scale set.
api-version	query	True	string	Client Api Version.

Request Body

Name	Type	Description
instanceIds	string[]	The virtual machine scale set instance ids. Omitting the virtual machine scale set instance ids will result in the operation being performed on all virtual machines in the virtual machine scale set.

Responses

Name	Type	Description
200 OK		OK
202 Accepted		Accepted
Other Status Codes	CloudError	Error response describing why the operation failed.

Security

azure_auth

Azure Active Directory OAuth2 Flow

Type: oauth2
Flow: implicit
Authorization URL: https://login.microsoftonline.com/common/oauth2/authorize

Scopes

Name	Description
user_impersonation	impersonate your user account

Examples

VirtualMachineScaleSet_Start_MaximumSet_Gen

VirtualMachineScaleSet_Start_MinimumSet_Gen

VirtualMachineScaleSet_Start_MaximumSet_Gen

Sample Request

HTTP

POST https://management.azure.com/subscriptions/{subscription-id}/resourceGroups/rgcompute/providers/Microsoft.Compute/virtualMachineScaleSets/aaaaaaaaaaaaaaaaaaaaaaaa/start?api-version=2023-03-01

{
  "instanceIds": [
    "aaaaaaaaaaaaaaaaa"
  ]
}

Java

import com.azure.resourcemanager.compute.models.VirtualMachineScaleSetVMInstanceIDs;
import java.util.Arrays;

/** Samples for VirtualMachineScaleSets Start. */
public final class Main {
    /*
     * x-ms-original-file: specification/compute/resource-manager/Microsoft.Compute/ComputeRP/stable/2023-03-01/examples/virtualMachineScaleSetExamples/VirtualMachineScaleSet_Start_MaximumSet_Gen.json
     */
    /**
     * Sample code: VirtualMachineScaleSet_Start_MaximumSet_Gen.
     *
     * @param azure The entry point for accessing resource management APIs in Azure.
     */
    public static void virtualMachineScaleSetStartMaximumSetGen(com.azure.resourcemanager.AzureResourceManager azure) {
        azure
            .virtualMachines()
            .manager()
            .serviceClient()
            .getVirtualMachineScaleSets()
            .start(
                "rgcompute",
                "aaaaaaaaaaaaaaaaaaaaaaaa",
                new VirtualMachineScaleSetVMInstanceIDs().withInstanceIds(Arrays.asList("aaaaaaaaaaaaaaaaa")),
                com.azure.core.util.Context.NONE);
    }
}

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

Python

from azure.identity import DefaultAzureCredential
from azure.mgmt.compute import ComputeManagementClient

"""
# PREREQUISITES
    pip install azure-identity
    pip install azure-mgmt-compute
# USAGE
    python virtual_machine_scale_set_start_maximum_set_gen.py

    Before run the sample, please set the values of the client ID, tenant ID and client secret
    of the AAD application as environment variables: AZURE_CLIENT_ID, AZURE_TENANT_ID,
    AZURE_CLIENT_SECRET. For more info about how to get the value, please see:
    https://docs.microsoft.com/azure/active-directory/develop/howto-create-service-principal-portal
"""


def main():
    client = ComputeManagementClient(
        credential=DefaultAzureCredential(),
        subscription_id="{subscription-id}",
    )

    response = client.virtual_machine_scale_sets.begin_start(
        resource_group_name="rgcompute",
        vm_scale_set_name="aaaaaaaaaaaaaaaaaaaaaaaa",
    ).result()
    print(response)


# x-ms-original-file: specification/compute/resource-manager/Microsoft.Compute/ComputeRP/stable/2023-03-01/examples/virtualMachineScaleSetExamples/VirtualMachineScaleSet_Start_MaximumSet_Gen.json
if __name__ == "__main__":
    main()

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

Go

package armcompute_test

import (
	"context"
	"log"

	"github.com/Azure/azure-sdk-for-go/sdk/azcore/to"
	"github.com/Azure/azure-sdk-for-go/sdk/azidentity"
	"github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/compute/armcompute/v5"
)

// Generated from example definition: https://github.com/Azure/azure-rest-api-specs/blob/5d2adf9b7fda669b4a2538c65e937ee74fe3f966/specification/compute/resource-manager/Microsoft.Compute/ComputeRP/stable/2023-03-01/examples/virtualMachineScaleSetExamples/VirtualMachineScaleSet_Start_MaximumSet_Gen.json
func ExampleVirtualMachineScaleSetsClient_BeginStart_virtualMachineScaleSetStartMaximumSetGen() {
	cred, err := azidentity.NewDefaultAzureCredential(nil)
	if err != nil {
		log.Fatalf("failed to obtain a credential: %v", err)
	}
	ctx := context.Background()
	clientFactory, err := armcompute.NewClientFactory("<subscription-id>", cred, nil)
	if err != nil {
		log.Fatalf("failed to create client: %v", err)
	}
	poller, err := clientFactory.NewVirtualMachineScaleSetsClient().BeginStart(ctx, "rgcompute", "aaaaaaaaaaaaaaaaaaaaaaaa", &armcompute.VirtualMachineScaleSetsClientBeginStartOptions{VMInstanceIDs: &armcompute.VirtualMachineScaleSetVMInstanceIDs{
		InstanceIDs: []*string{
			to.Ptr("aaaaaaaaaaaaaaaaa")},
	},
	})
	if err != nil {
		log.Fatalf("failed to finish the request: %v", err)
	}
	_, err = poller.PollUntilDone(ctx, nil)
	if err != nil {
		log.Fatalf("failed to pull the result: %v", err)
	}
}

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

JavaScript

const { ComputeManagementClient } = require("@azure/arm-compute");
const { DefaultAzureCredential } = require("@azure/identity");

/**
 * This sample demonstrates how to Starts one or more virtual machines in a VM scale set.
 *
 * @summary Starts one or more virtual machines in a VM scale set.
 * x-ms-original-file: specification/compute/resource-manager/Microsoft.Compute/ComputeRP/stable/2023-03-01/examples/virtualMachineScaleSetExamples/VirtualMachineScaleSet_Start_MaximumSet_Gen.json
 */
async function virtualMachineScaleSetStartMaximumSetGen() {
  const subscriptionId = process.env["COMPUTE_SUBSCRIPTION_ID"] || "{subscription-id}";
  const resourceGroupName = process.env["COMPUTE_RESOURCE_GROUP"] || "rgcompute";
  const vmScaleSetName = "aaaaaaaaaaaaaaaaaaaaaaaa";
  const vmInstanceIDs = {
    instanceIds: ["aaaaaaaaaaaaaaaaa"],
  };
  const options = { vmInstanceIDs };
  const credential = new DefaultAzureCredential();
  const client = new ComputeManagementClient(credential, subscriptionId);
  const result = await client.virtualMachineScaleSets.beginStartAndWait(
    resourceGroupName,
    vmScaleSetName,
    options
  );
  console.log(result);
}

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

Sample Response

Status code:

200

Status code:

202

location: https://foo.com/operationstatus

VirtualMachineScaleSet_Start_MinimumSet_Gen

Sample Request

HTTP

POST https://management.azure.com/subscriptions/{subscription-id}/resourceGroups/rgcompute/providers/Microsoft.Compute/virtualMachineScaleSets/aaaaaaaaaaaaaaaaaaa/start?api-version=2023-03-01

Java

/** Samples for VirtualMachineScaleSets Start. */
public final class Main {
    /*
     * x-ms-original-file: specification/compute/resource-manager/Microsoft.Compute/ComputeRP/stable/2023-03-01/examples/virtualMachineScaleSetExamples/VirtualMachineScaleSet_Start_MinimumSet_Gen.json
     */
    /**
     * Sample code: VirtualMachineScaleSet_Start_MinimumSet_Gen.
     *
     * @param azure The entry point for accessing resource management APIs in Azure.
     */
    public static void virtualMachineScaleSetStartMinimumSetGen(com.azure.resourcemanager.AzureResourceManager azure) {
        azure
            .virtualMachines()
            .manager()
            .serviceClient()
            .getVirtualMachineScaleSets()
            .start("rgcompute", "aaaaaaaaaaaaaaaaaaa", null, com.azure.core.util.Context.NONE);
    }
}

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

Python

from azure.identity import DefaultAzureCredential
from azure.mgmt.compute import ComputeManagementClient

"""
# PREREQUISITES
    pip install azure-identity
    pip install azure-mgmt-compute
# USAGE
    python virtual_machine_scale_set_start_minimum_set_gen.py

    Before run the sample, please set the values of the client ID, tenant ID and client secret
    of the AAD application as environment variables: AZURE_CLIENT_ID, AZURE_TENANT_ID,
    AZURE_CLIENT_SECRET. For more info about how to get the value, please see:
    https://docs.microsoft.com/azure/active-directory/develop/howto-create-service-principal-portal
"""


def main():
    client = ComputeManagementClient(
        credential=DefaultAzureCredential(),
        subscription_id="{subscription-id}",
    )

    response = client.virtual_machine_scale_sets.begin_start(
        resource_group_name="rgcompute",
        vm_scale_set_name="aaaaaaaaaaaaaaaaaaa",
    ).result()
    print(response)


# x-ms-original-file: specification/compute/resource-manager/Microsoft.Compute/ComputeRP/stable/2023-03-01/examples/virtualMachineScaleSetExamples/VirtualMachineScaleSet_Start_MinimumSet_Gen.json
if __name__ == "__main__":
    main()

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

Go

package armcompute_test

import (
	"context"
	"log"

	"github.com/Azure/azure-sdk-for-go/sdk/azidentity"
	"github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/compute/armcompute/v5"
)

// Generated from example definition: https://github.com/Azure/azure-rest-api-specs/blob/5d2adf9b7fda669b4a2538c65e937ee74fe3f966/specification/compute/resource-manager/Microsoft.Compute/ComputeRP/stable/2023-03-01/examples/virtualMachineScaleSetExamples/VirtualMachineScaleSet_Start_MinimumSet_Gen.json
func ExampleVirtualMachineScaleSetsClient_BeginStart_virtualMachineScaleSetStartMinimumSetGen() {
	cred, err := azidentity.NewDefaultAzureCredential(nil)
	if err != nil {
		log.Fatalf("failed to obtain a credential: %v", err)
	}
	ctx := context.Background()
	clientFactory, err := armcompute.NewClientFactory("<subscription-id>", cred, nil)
	if err != nil {
		log.Fatalf("failed to create client: %v", err)
	}
	poller, err := clientFactory.NewVirtualMachineScaleSetsClient().BeginStart(ctx, "rgcompute", "aaaaaaaaaaaaaaaaaaa", &armcompute.VirtualMachineScaleSetsClientBeginStartOptions{VMInstanceIDs: nil})
	if err != nil {
		log.Fatalf("failed to finish the request: %v", err)
	}
	_, err = poller.PollUntilDone(ctx, nil)
	if err != nil {
		log.Fatalf("failed to pull the result: %v", err)
	}
}

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

JavaScript

const { ComputeManagementClient } = require("@azure/arm-compute");
const { DefaultAzureCredential } = require("@azure/identity");

/**
 * This sample demonstrates how to Starts one or more virtual machines in a VM scale set.
 *
 * @summary Starts one or more virtual machines in a VM scale set.
 * x-ms-original-file: specification/compute/resource-manager/Microsoft.Compute/ComputeRP/stable/2023-03-01/examples/virtualMachineScaleSetExamples/VirtualMachineScaleSet_Start_MinimumSet_Gen.json
 */
async function virtualMachineScaleSetStartMinimumSetGen() {
  const subscriptionId = process.env["COMPUTE_SUBSCRIPTION_ID"] || "{subscription-id}";
  const resourceGroupName = process.env["COMPUTE_RESOURCE_GROUP"] || "rgcompute";
  const vmScaleSetName = "aaaaaaaaaaaaaaaaaaa";
  const credential = new DefaultAzureCredential();
  const client = new ComputeManagementClient(credential, subscriptionId);
  const result = await client.virtualMachineScaleSets.beginStartAndWait(
    resourceGroupName,
    vmScaleSetName
  );
  console.log(result);
}

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

Sample Response

Status code:

200

Status code:

202

location: https://foo.com/operationstatus

Definitions

Name	Description
ApiError	Api error.
ApiErrorBase	Api error base.
CloudError	An error response from the Compute service.
InnerError	Inner error details.
VirtualMachineScaleSetVMInstanceIDs	Specifies a list of virtual machine instance IDs from the VM scale set.

ApiError

Api error.

Name	Type	Description
code	string	The error code.
details	ApiErrorBase[]	The Api error details
innererror	InnerError	The Api inner error
message	string	The error message.
target	string	The target of the particular error.

ApiErrorBase

Api error base.

Name	Type	Description
code	string	The error code.
message	string	The error message.
target	string	The target of the particular error.

CloudError

An error response from the Compute service.

Name	Type	Description
error	ApiError	Api error.

InnerError

Inner error details.

Name	Type	Description
errordetail	string	The internal error message or exception dump.
exceptiontype	string	The exception type.

VirtualMachineScaleSetVMInstanceIDs

Specifies a list of virtual machine instance IDs from the VM scale set.

Name	Type	Description
instanceIds	string[]	The virtual machine scale set instance ids. Omitting the virtual machine scale set instance ids will result in the operation being performed on all virtual machines in the virtual machine scale set.