DescribeDBClusterPerformance - PolarDB - Alibaba Cloud Documentation Center

Queries the performance data of a PolarDB cluster.

Operation description

When the monitoring data is collected every 5 seconds:
- If the query time range is less than or equal to 1 hour, the data is displayed at intervals of 5 seconds.
- If the query time range is less than or equal to one day, the data is displayed at intervals of 1 minute.
- If the query time range is less than or equal to seven days, the data is displayed at intervals of 10 minutes.
- If the query time range is less than or equal to 30 days, the data is displayed at intervals of 1 hour.
- When the query time range is greater than 30 days, the data is displayed at intervals of 1 day.
When the monitoring data is collected every 60 seconds:
- If the query time range is less than or equal to one day, the data is displayed at intervals of 1 minute.
- If the query time range is less than or equal to seven days, the data is displayed at intervals of 10 minutes.
- If the query time range is less than or equal to 30 days, the data is displayed at intervals of 1 hour.
- When the query time range is greater than 30 days, the data is displayed at intervals of 1 day.

Note By default, the monitoring data is collected once every 60 seconds. You can call the ModifyDBClusterMonitor operation to set the data collection interval to every 5 seconds.

Debugging

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Debug

Authorization information

The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:

Operation: the value that you can use in the Action element to specify the operation on a resource.
Access level: the access level of each operation. The levels are read, write, and list.
Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
- The required resource types are displayed in bold characters.
- If the permissions cannot be granted at the resource level, All Resources is used in the Resource type column of the operation.
Condition Key: the condition key that is defined by the cloud service.
Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.

Operation	Access level	Resource type	Condition key	Associated operation
polardb:DescribeDBClusterPerformance	get	dbcluster acs:polardb:{#regionId}:{#accountId}:dbcluster/{#dbclusterId}	none	none

Request parameters

Parameter	Type	Required	Description	Example
DBClusterId	string	Yes	The cluster ID.	pc-****************
Type	string	No	The Query Type	orca
Key	string	Yes	The performance metrics that you want to query. Separate multiple metrics with commas (,). For more information, see Performance parameters. Note You can specify a maximum of five performance metrics.	PolarDBDiskUsage
StartTime	string	Yes	The beginning of the time range to query. Specify the time in the ISO 8601 standard in the `yyyy-MM-ddTHH:mmZ` format. The time must be in UTC.	2020-09-23T01:01Z
EndTime	string	Yes	The end of the time range to query. Specify the time in the ISO 8601 standard in the `yyyy-MM-ddTHH:mmZ` format. The time must be in UTC.	2020-09-23T01:00Z
Interval	string	No	The interval at which performance data is collected. Valid values: 5, 30, 60, 600, 1800, 3600, 86400, in seconds.	60

Response parameters

Parameter	Type	Description	Example
	object
PerformanceKeys	array<object>	The cluster performance metrics.
PerformanceItem	object
MetricName	string	The name of the performance metric.	mean_data_size
Measurement	string	The performance metrics that are returned.	PolarDBDiskUsage
Points	array<object>	The performance metrics.
PerformanceItemValue	object
Value	string	The value of the metric.	42.38
Timestamp	long	The timestamp of the metric. This value is a UNIX timestamp. Unit: millisecond.	1600822800000
DBNodeId	string	The ID of the cluster node. Note The value of this parameter is not returned if the `Key` parameter is set to `PolarDBDiskUsage`.	pi-*************
DBVersion	string	The version of the database engine.	8.0
EndTime	string	The end time of the query. The time follows the ISO 8601 standard in the `yyyy-MM-ddTHH:mm:ssZ` format. The time is displayed in UTC.	2020-09-23T01:01:00Z
RequestId	string	The request ID.	35D3E3DA-4650-407A-BFF5-59BFF1******
StartTime	string	The start time of the query. The time follows the ISO 8601 standard in the `yyyy-MM-ddTHH:mm:ssZ` format. The time is displayed in UTC.	2020-09-23T01:00:00Z
DBClusterId	string	The cluster ID.	pc-*****************
DBType	string	The type of the database engine.	MySQL

Examples

Sample success responses

JSONformat

{
  "PerformanceKeys": {
    "PerformanceItem": [
      {
        "MetricName": "mean_data_size",
        "Measurement": "PolarDBDiskUsage",
        "Points": {
          "PerformanceItemValue": [
            {
              "Value": "42.38",
              "Timestamp": 1600822800000
            }
          ]
        },
        "DBNodeId": "pi-*************"
      }
    ]
  },
  "DBVersion": "8.0",
  "EndTime": "2020-09-23T01:01:00Z",
  "RequestId": "35D3E3DA-4650-407A-BFF5-59BFF1******",
  "StartTime": "2020-09-23T01:00:00Z",
  "DBClusterId": "pc-*****************",
  "DBType": "MySQL"
}

Error codes

HTTP status code	Error code	Error message	Description
400	InvalidKey.Malformed	The specified parameter Key is not valid.	The specified parameter key is invalid.
400	InvalidEndTime.Malformed	The specified parameter EndTime is not valid.	The specified EndTime parameter is invalid.
400	InvalidStartTime.Malformed	The specified parameter StartTime is not valid.	The specified StartTime parameter is invalid.
400	InvalidParameterCombination	The end time must be greater than the start time.	The end time must be later than the start time.
400	InvalidDateRange.Malformed	The Date Range can not more than one month.	The date range can be up to one month in length.
404	InvalidDBClusterId.NotFound	The DBClusterId provided does not exist in our records.	The specified DBClusterId parameter does not exist in the current record.
404	InvalidDBClusterId.Malformed	The specified parameter DBClusterId is not valid.	The specified DBClusterId parameter is invalid.

For a list of error codes, visit the Service error codes.

Change history

Change time	Summary of changes	Operation
2024-07-11	The Error code has changed. The request parameters of the API has changed	View Change Details
2024-02-29	The Error code has changed. The request parameters of the API has changed	View Change Details
2023-09-12	The Error code has changed	View Change Details