Getting Started

Overview

This topic describes how to invoke Cloud Eye APIs to create an alarm rule for the ECS CPU usage.

Procedure

1. Obtain the token by referring to Authentication.
2. Query the list of metrics that can be monitored.

   Send GET https://Cloud Eye endpoint/V1.0/{project_id}/metrics.

   Add X-Auth-Token obtained in 1 to the request header.

   After the request is successfully responded, the metrics information is returned, such as "metric_name": "cpu_util" in the following figure.

   {
       "metrics": [
           {
               "namespace": "SYS.ECS", 
               "dimensions": [
                   {
                       "name": "instance_id", 
                       "value": "d9112af5-6913-4f3b-bd0a-3f96711e004d"
                   }
               ], 
               "metric_name": "cpu_util", 
               "unit": "%"
           }
       ], 
       "meta_data": {
           "count": 1, 
           "marker": "SYS.ECS.cpu_util.instance_id:d9112af5-6913-4f3b-bd0a-3f96711e004d", 
           "total": 7
       }
   }

   If the request fails, an error code and error information are returned. For details, see Error Codes.

3. Create an alarm rule.

   Send POST https://Cloud Eye endpoint/V1.0/{project_id}/alarms.

   Specify the following parameters in the request body:

   {
       "alarm_name": "alarm-rp0E",  //Alarm rule name (mandatory, string)
       "alarm_description": "", 
       "metric": {
           "namespace": "SYS.ECS",  //Namespace (mandatory, string)
           "dimensions": [
               {
                   "name": "instance_id", 
                   "value": "33328f02-3814-422e-b688-bfdba93d4051"
               }
           ], 
           "metric_name": "cpu_util"   //Metric name (mandatory, string)
       }, 
       "condition": {
           "period": 300,      //Monitoring period (mandatory, integer)
           "filter": "average",     //Data rollup method (mandatory, string)
           "comparison_operator": ">=",    //Operator of the alarm threshold (mandatory, string)
           "value": 80, //Threshold (mandatory, string)
           "unit": "%",  //Data unit (mandatory, string)
           "count": 1
       }, 
       "alarm_enabled": true, 
       "alarm_action_enabled": true, 
       "alarm_level": 2,
       "alarm_actions": [
           {
               "type": "notification", 
               "notificationList": [ ]
           }
       ], 
       "ok_actions": [
           {
               "type": "notification", 
               "notificationList": [ ]
           }
       ]
   }

   If the request is responded, the alarm rule ID is returned.

   {
       "alarm_id":"al1450321795427dR8p5mQBo"
   }

   If the request fails, an error code and error information are returned. For details, see Error Codes.

   You can query, enable, disable, or delete alarm rules based on the alarm rule ID obtained in 3.