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ENS:DescribeInstanceMonitorData

Last Updated:Mar 27, 2026

Queries the vCPU and memory usage of an instance.

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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:DescribeInstanceMonitorData

get

*All Resource

*

None None

Request parameters

Parameter

Type

Required

Description

Example

InstanceId

string

No

The ID of the instance. You can specify only one instance ID.

yourInstance ID

StartTime

string

No

The beginning of the time range to query.

Specify the time in the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time must be in UTC. If the value of the seconds place is not 00, the start time is automatically set to the next minute.

2019-10-29T23:00:00Z

EndTime

string

No

The end of the time range to query.

Specify the time in the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time must be in UTC. If the value of the seconds place is not 00, the start time is automatically set to the next minute.

2019-10-30T08:00:00Z

Period

string

No

The precision of the monitoring data that you want to obtain. Valid values: 60, 300, 1200, 3600, and 14400. Default value: 60. Unit: seconds.

60

Response elements

Element

Type

Description

Example

object

Code

integer

The returned service code. A value of 0 indicates that the operation was successful.

0

MonitorData

object

InstanceMonitorData

array<object>

The set of InstanceMonitorDataType data.

object

CPU

string

The vCPU usage of the instance, which is raw data. For example, a value of 0.02 indicates that the usage is 2%.

0.02

InstanceId

string

The ID of the instance.

yourInstance ID

Memory

string

This parameter is not yet supported.

Not supported

RequestId

string

The request ID.

C8B26B44-0189-443E-9816-D951F59623A9

Examples

Success response

JSON format

{
  "Code": 0,
  "MonitorData": {
    "InstanceMonitorData": [
      {
        "CPU": "0.02",
        "InstanceId": "yourInstance ID",
        "Memory": "Not supported"
      }
    ]
  },
  "RequestId": "C8B26B44-0189-443E-9816-D951F59623A9"
}

Error codes

HTTP status code

Error code

Error message

Description

400 MissingParameter The input parameters that is mandatory for processing this request is not supplied.
400 NoPermission Permission denied.
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.