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Cloud Monitor:DescribeSystemEventHistogram

Last Updated:Jan 23, 2026

Queries the number of times a system event occurred during each interval within a period of time.

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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

cms:DescribeSystemEventHistogram

get

*All Resource

*

None None

Request parameters

Parameter

Type

Required

Description

Example

Product

string

No

The abbreviation of the service name.

Note

You can call the DescribeSystemEventMetaList operation to query the abbreviations of service names.

OSS

EventType

string

No

The event type.

Note

You can call the DescribeSystemEventMetaList operation to query the types of system events.

Exception

Name

string

No

The event name.

Note

You can call the DescribeSystemEventMetaList operation to query the names of system events.

BucketIngressBandwidth

Level

string

No

The level of the event. Valid values:

  • CRITICAL

  • WARN

  • INFO

CRITICAL

Status

string

No

The event status.

Note

You can call the DescribeSystemEventMetaList operation to query the status of system events.

normal

GroupId

string

No

The ID of the application group.

12345

SearchKeywords

string

No

The keywords that are used to search for the system event. Valid values:

  • If you want to search for the system event whose content contains a and b, set the value to a and b.

  • If you want to search for the system event whose content contains a or b, set the value to a or b.

cms

StartTime

string

No

The start time.

This value is a UNIX timestamp representing the number of milliseconds that have elapsed since January 1, 1970, 00:00:00 UTC.

1552209685596

EndTime

string

No

The end time.

This value is a UNIX timestamp representing the number of milliseconds that have elapsed since January 1, 1970, 00:00:00 UTC.

1552220485596

Response elements

Element

Type

Description

Example

object

Code

string

The response code.

Note

The status code 200 indicates that the request was successful.

200

Message

string

The returned message.

The Request is not authorization.

RequestId

string

The request ID.

486029C9-53E1-44B4-85A8-16A571A043FD

Success

string

Indicates whether the request was successful. Valid values: true: The request was successful. false: The request failed.

true

SystemEventHistograms

object

SystemEventHistogram

array<object>

The information about the number of times the system event occurred during each interval of a time period.

object

EndTime

integer

The end time.

This value is a UNIX timestamp representing the number of milliseconds that have elapsed since January 1, 1970, 00:00:00 UTC.

1552225753000

StartTime

integer

The start time.

This value is a UNIX timestamp representing the number of milliseconds that have elapsed since January 1, 1970, 00:00:00 UTC.

1552225770000

Count

integer

The number of times the system event occurred.

2

Examples

Success response

JSON format

{
  "Code": "200",
  "Message": "The Request is not authorization.",
  "RequestId": "486029C9-53E1-44B4-85A8-16A571A043FD",
  "Success": "true",
  "SystemEventHistograms": {
    "SystemEventHistogram": [
      {
        "EndTime": 1552225753000,
        "StartTime": 1552225770000,
        "Count": 2
      }
    ]
  }
}

Error codes

HTTP status code

Error code

Error message

Description

400 ParameterInvalid Illegal parameters.
500 InternalError The request processing has failed due to some unknown error.
403 AccessForbidden User not authorized to operate on the specified resource.
404 ResourceNotFound The specified resource is not found. The specified resource is not found.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.