doc-exports/docs/mrs/api-ref/mrs_02_1096.html

Querying Monitoring Data

Function

This API is used to query performance monitoring items supported by a specified host.

URI

• Format

GET /web/v1/monitor/metrics_info

• Parameter description

Parameter	Mandatory or Not	Description
metric_names	Yes	Monitoring metric name. Use commas (,) to separate metric names. You can enter a maximum of 10 metric names at a time. Example metric names are as follows: hm_cpu_used: CPU usage hm_cpu_core_num: Number of CPU cores
metric_period	No	Metric period, which can be real time, 5 minutes, 30 minutes, or 60 minutes
start_time	No	Start time, expressed in milliseconds. The data type is Long. The default value is the earliest system time.
end_time	No	End time, expressed in milliseconds. The data type is Long. The default value is the latest system time.
hosts	No	List of host names to be queried. Use commas (,) to separate host names. You can enter a maximum of 50 host names to meet the input length requirements of the browser.
host_group	No	Name of the host group created by a user. This function is not available in the current version.
metric_node_type	No	You can set this parameter to obtain the monitoring metrics of a node. The possible values are as follows: active: Indicates that you can obtain monitoring metrics of the active node. standby: Indicates that you can obtain monitoring metrics of the standby node. all: Indicates that you can obtain monitoring metrics of all nodes.
extend	No	Metric extended field, which records information about small metrics

Request

• Example:

  GET /web/v1/monitor/metrics_info?metric_names=null&metric_period=null&start_time=null&end_time=null&hosts=null&host_group=null&metric_node_type=null&extend=null HTTP/1.1
  Host: example.com
  Content-Type: application/json
  Accept:application/json

• Parameter description

  None

Response

• Example:

HTTP/1.1 200 OK
Data:Wed,02 May 2018 10:10:01 GMT
Server: example-server
Content-Type: application/json
{
  "id": 0,
  "state": "COMPLETE",
  "error_code": 0,
  "error_description": "string",
  "total_progress": 0,
  "res_obj": {
    "metric_datas": {
      "additionalProp1": [
        {
          "time": 0,
          "value": "string",
          "node": "string"
        }
      ]
    }
  }
}

• Request parameter description

Table 1 Response parameter description

Parameter	Mandatory or Not	Type	Description
id	No	LONG	Asynchronous task ID (meaningless in other scenarios). The default value is -1.
state	No	STRING	Cluster status. The value FAILED indicates that the command fails to be executed. The value COMPLETE indicates that the command is successfully executed.
error_code	No	INTEGER	Error code returned
error_description	No	STRING	Error code description
total_progress	No	FLOAT	Total progress
res_obj	No	REFERENCE	Response object

Table 2 res_obj parameter description

Parameter	Mandatory or Not	Type	Description
metric_datas	No	MAP	Monitoring data. Key indicates the name of a monitoring item. Value indicates a list of monitored metric parameters queried.

Table 3 metricDataBean parameter description

Parameter	Mandatory or Not	Type	Description
time	No	BIGDECIMAL	Time when monitoring metric value is collected
value	No	STRING	Monitoring metric value
node	No	STRING	Node where the monitoring metric is collected
extend	No	STRING	Metric extended field, which records information about small metrics

Status Code

Status Code	Description
200	The operation is successful.

For details about error status codes, see Status Codes.

Parent topic: MRS Manager Web APIs