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ENS:DescribeImageInfos

Last Updated:Mar 27, 2026

Queries available images.

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RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

  • Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.

  • API: The API that you can call to perform the action.

  • Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.

  • Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.

    • For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.

    • For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.

  • Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.

  • Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

ens:DescribeImageInfos

get

*All Resource

*

None None

Request parameters

Parameter

Type

Required

Description

Example

OsType

string

No

The operating system (OS). You can specify only one OS in a request. If you do not specify a value for this parameter, images for all supported OSs are queried. Valid values:

  • linux

  • windows

linux

Response elements

Element

Type

Description

Example

object

Code

integer

The HTTP status code that is returned.

0

Images

object

Image

array<object>

The information about images.

array<object>

The information about the image.

Description

string

The description of the image.

centos_6_08_64_20G_alibase_2017****

ImageId

string

The ID of the image.

centos_6_08_64_20G_alibase_2017****

ImageSize

string

The size of the image. Unit: GiB.

20

ImageVersion

string

The version of the image.

6.8

OSName

string

The type of the image. Valid values: centos, debian, ubuntu, and windows.

centos

OSType

string

The type of the operating system.

linux

ComputeType

string

The computing type of the image. Valid values:

  • ens_vm: x86 computing.

  • arm_vm: ARM computing.

  • bare_metal: x86 bare machine.

  • pcfarm: heterogeneous computing.

Valid values:

  • ens_vm :
  • arm_vm :
  • bare_metal :
  • pcfarm :

ens_vm

DiskDeviceMappings

object

DiskDeviceMapping

array<object>

The mappings between disks and snapshots in the image.

object

The mappings between the disk and the snapshot in the image.

Type

string

The type of the disk. Valid values: System and Data.

Data

Size

string

The size of the image. Unit: GB.

100

Format

string

The format of the image.

Image format,Value raw qcow2

imageId

string

The ID of the image.

i-test

RegionId

string

The ID of the region.

cn-wulanchabu

RequestId

string

The request ID.

5568A08C-10A9-47F3-902F-647298B463FB

Examples

Success response

JSON format

{
  "Code": 0,
  "Images": {
    "Image": [
      {
        "Description": "centos_6_08_64_20G_alibase_2017****",
        "ImageId": "centos_6_08_64_20G_alibase_2017****",
        "ImageSize": "20",
        "ImageVersion": "6.8",
        "OSName": "centos",
        "OSType": "linux",
        "ComputeType": "ens_vm",
        "DiskDeviceMappings": {
          "DiskDeviceMapping": [
            {
              "Type": "Data",
              "Size": "100",
              "Format": "Image format,Value\nraw\nqcow2",
              "imageId": "i-test"
            }
          ]
        },
        "RegionId": "cn-wulanchabu"
      }
    ]
  },
  "RequestId": "5568A08C-10A9-47F3-902F-647298B463FB"
}

Error codes

HTTP status code

Error code

Error message

Description

400 MissingParameter The input parameter domainName that is mandatory for processing this request is not supplied.
400 InstanceIdNotFound The input parameter instancdId that is not found. The specified instance ID does not exist.
400 NoPermission Permission denied.
400 CallInterface Call Interface Happen Error. An error occurred when you call the operation.
400 InvalidParameter.%s The specified field %s invalid. Please check it again.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.