Virtual Machine Scale Sets - Reimage

Reimages (upgrade the operating system) one or more virtual machines in a VM scale set which don't have a ephemeral OS disk, for virtual machines who have a ephemeral OS disk the virtual machine is reset to initial state.

POST https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/reimage?api-version=2022-11-01

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
exactVersion
  • string

Specifies in decimal number, the version the OS disk should be reimaged to. If exact version is not provided, the OS disk is reimaged to the existing version of OS Disk.

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.

osProfile

Specifies information required for reimaging the non-ephemeral OS disk.

tempDisk
  • boolean

Specifies whether to reimage temp disk. Default value: false. Note: This temp disk reimage parameter is only supported for VM/VMSS with Ephemeral OS disk.

Responses

Name Type Description
200 OK

OK

202 Accepted

Accepted

Other Status Codes

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

VirtualMachineScaleSets_Reimage_MaximumSet_Gen
VirtualMachineScaleSets_Reimage_MinimumSet_Gen

VirtualMachineScaleSets_Reimage_MaximumSet_Gen

Sample Request

POST https://management.azure.com/subscriptions/{subscription-id}/resourceGroups/rgcompute/providers/Microsoft.Compute/virtualMachineScaleSets/aaaaaaaaaaaaaaaaaaaaaaaaaa/reimage?api-version=2022-11-01

{
  "instanceIds": [
    "aaaaaaaaaa"
  ],
  "tempDisk": true
}

Sample Response

location: https://foo.com/operationstatus

VirtualMachineScaleSets_Reimage_MinimumSet_Gen

Sample Request

POST https://management.azure.com/subscriptions/{subscription-id}/resourceGroups/rgcompute/providers/Microsoft.Compute/virtualMachineScaleSets/aaaaaaaaaaaaaaaaaaaaaaaaaaaa/reimage?api-version=2022-11-01

Sample Response

location: https://foo.com/operationstatus

Definitions

ApiError

Api error.

ApiErrorBase

Api error base.

CloudError

An error response from the Compute service.

InnerError

Inner error details.

OSProfileProvisioningData

Additional parameters for Reimaging Non-Ephemeral Virtual Machine.

VirtualMachineScaleSetReimageParameters

Describes a Virtual Machine Scale Set VM Reimage Parameters.

ApiError

Api error.

Name Type Description
code
  • string

The error code.

details

The Api error details

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

Api error.

InnerError

Inner error details.

Name Type Description
errordetail
  • string

The internal error message or exception dump.

exceptiontype
  • string

The exception type.

OSProfileProvisioningData

Additional parameters for Reimaging Non-Ephemeral Virtual Machine.

Name Type Description
adminPassword
  • string

Specifies the password of the administrator account.

Minimum-length (Windows): 8 characters

Minimum-length (Linux): 6 characters

Max-length (Windows): 123 characters

Max-length (Linux): 72 characters

Complexity requirements: 3 out of 4 conditions below need to be fulfilled
Has lower characters
Has upper characters
Has a digit
Has a special character (Regex match [\W_])

Disallowed values: "abc@123", "P@$$w0rd", "P@ssw0rd", "P@ssword123", "Pa$$word", "pass@word1", "Password!", "Password1", "Password22", "iloveyou!"

For resetting the password, see How to reset the Remote Desktop service or its login password in a Windows VM

For resetting root password, see Manage users, SSH, and check or repair disks on Azure Linux VMs using the VMAccess Extension

customData
  • string

Specifies a base-64 encoded string of custom data. The base-64 encoded string is decoded to a binary array that is saved as a file on the Virtual Machine. The maximum length of the binary array is 65535 bytes.

Note: Do not pass any secrets or passwords in customData property

This property cannot be updated after the VM is created.

customData is passed to the VM to be saved as a file, for more information see Custom Data on Azure VMs

For using cloud-init for your Linux VM, see Using cloud-init to customize a Linux VM during creation

VirtualMachineScaleSetReimageParameters

Describes a Virtual Machine Scale Set VM Reimage Parameters.

Name Type Description
exactVersion
  • string

Specifies in decimal number, the version the OS disk should be reimaged to. If exact version is not provided, the OS disk is reimaged to the existing version of OS Disk.

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.

osProfile

Specifies information required for reimaging the non-ephemeral OS disk.

tempDisk
  • boolean

Specifies whether to reimage temp disk. Default value: false. Note: This temp disk reimage parameter is only supported for VM/VMSS with Ephemeral OS disk.