DescribeAvailableMetrics - ApsaraDB RDS - Alibaba Cloud Documentation Center

You can call the DescribeAvailableMetrics operation to query the enhanced monitoring metrics that are available for an instance.

Operation Description

Prerequisites

The instance runs PostgreSQL.

For more information, see View the Enhanced Monitoring metrics of an ApsaraDB RDS for PostgreSQL instance.

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
rds:DescribeAvailableMetrics	Read	RDS acs:rds:{#regionId}:{#accountId}:dbinstance/{#dbinstanceId}	rds:ResourceTag	none

Request parameters

Parameter	Type	Required	Description	Example
DBInstanceName	string	Yes	The ID of the instance. You can call the DescribeDBInstances operation to query the IDs of instances.	pgm-bp1s1j103lo6****
ResourceGroupId	string	No	The ID of the resource group.	rg-acfmy*****

Response parameters

Parameter	Type	Description	Example
	object
TotalRecordCount	integer	The total number of enhanced monitoring metrics that are available for the instance.	4
RequestId	string	The ID of the request.	5CD61041-35F7-10F7-BE94-33A48B221218
Items	object []	An array that consists of the details of the enhanced monitoring metric.
GroupKey	string	The key of the group to which the enhanced monitoring metric belongs.	os.cpu_usage
SortRule	integer	The serial number of the enhanced monitoring metric.	1
Description	string	The description of the enhanced monitoring metric.	OS CPU utilization, equal to the number of OS-consumed CPUs divided by the total number of CPUs
Unit	string	The unit of the enhanced monitoring metric.	%
MetricsKey	string	The key of the enhanced monitoring metric.	os.cpu_usage.sys.avg
GroupKeyType	string	The name of the group to which the enhanced monitoring metric belongs.	CPU Utilization Rate
MetricsKeyAlias	string	The alias of the enhanced monitoring metric.	cpu_sys_per_core
Method	string	The method that is used to aggregate the monitoring data of the enhanced monitoring metric. Valid values: avg: The system calculates the average value of the enhanced monitoring metric. min: The system calculates the minimum value of the enhanced monitoring metric. max: The system calculates the maximum value of the enhanced monitoring metric.	avg
Dimension	string	The category of the enhanced monitoring metric. Valid values: os: OS metric db: database metric	os
DBInstanceName	string	The ID of the instance.	rm-bp1*****

Examples

Sample success responses

JSONformat

{
  "TotalRecordCount": 4,
  "RequestId": "5CD61041-35F7-10F7-BE94-33A48B221218",
  "Items": [
    {
      "GroupKey": "os.cpu_usage",
      "SortRule": 1,
      "Description": "OS CPU utilization, equal to the number of OS-consumed CPUs divided by the total number of CPUs\n",
      "Unit": "%",
      "MetricsKey": "os.cpu_usage.sys.avg",
      "GroupKeyType": "CPU Utilization Rate\n",
      "MetricsKeyAlias": "cpu_sys_per_core",
      "Method": "avg",
      "Dimension": "os"
    }
  ],
  "DBInstanceName": "rm-bp1*****"
}

Error codes

HTTP status code	Error code	Error message	Description
400	InvalidDBInstanceEngineType.Format	the DB instance engine type does not support this operation.	This operation is not supported for the database engine of the instance.
404	InvalidDBInstanceName.NotFound	The database instance does not exist.	The name of the RDS instance cannot be found. Check the name of the RDS instance.

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

Change history

Change time

Summary of changes

Operation

2022-08-04

The error codes of the API operation change.,The input parameters of the API operation change.,The response structure of the API operation changes.

Change item	Change content
Error Codes	The error codes of the API operation change.
	delete Error Codes: 400
	delete Error Codes: 404
Input Parameters	The input parameters of the API operation change.
	Added Input Parameters: ResourceGroupId
Output Parameters	The response structure of the API operation changes.