Example 2: Querying Time Series Data

Scenario

This section describes how to query the time series data about a node's CPU usage.

Obtaining Basic Information

Before querying time series data, obtain the node ID from dimensions on the ECS console, and the cluster ID from dimensions on the cluster management page of the CCE console.

For details about the CPU usage metric, see table 1 in Host Metrics and Dimensions. For details about the name corresponding to the cluster or node ID, see table 2 in Host Metrics and Dimensions. For details about the namespace, see Table 4 QuerySample

Querying Time Series Data

• URI format

  POST /v2/{project_id}/samples

• Example request

  POST https://{aom_endpoint}/v2/{project_id}/samples

  To obtain the value of {aom_endpoint}, see Regions and Endpoints.

  Body:

  {  
      "samples": [  
          {  
              "namespace": "PAAS.NODE",  
              "metric_name": "cpuUsage",
                 "dimensions": [ {  
                      "name": "clusterId",  
                      "value": "4fae3587-0202-11eb-9ba9-0255ac100b02"  
                  },
                  {  
                      "name": "hostID",  
                      "value": "4100f512-c4e9-4b65-b0dd-2b94ea5e1a84"  
                  }
              ]  
          }  
      ],  
      "period": 60,  
      "time_range": "-1.-1.2", 
      "statistics": [  
          "maximum",  
          "minimum",  
          "sum"  
      ]  
  }

• Example response

  {
  	"samples": [{
  		"sample": {
  			"namespace": "PAAS.NODE",
  			"metric_name": "cpuUsage",
  			"dimensions": [{
  				"name": "clusterId",
  				"value": "4fae3587-0202-11eb-9ba9-0255ac100b02"
  			},
  			{
  				"name": "hostID",
  				"value": "4100f512-c4e9-4b65-b0dd-2b94ea5e1a84"
  			}]
  		},
  		"data_points": [{
  			"timestamp": 1608191880000,
  			"unit": "Percent",
  			"statistics": [{
  				"statistic": "maximum",
  				"value": 14.5
  			},
  			{
  				"statistic": "minimum",
  				"value": 14.5
  			},
  			{
  				"statistic": "sum",
  				"value": 14.5
  			}]
  		},
  		{
  			"timestamp": 1608191940000,
  			"unit": "Percent",
  			"statistics": [{
  				"statistic": "maximum",
  				"value": 12.0
  			},
  			{
  				"statistic": "minimum",
  				"value": 12.0
  			},
  			{
  				"statistic": "sum",
  				"value": 12.0
  			}]
  		}]
  	}]
  }