Querying an Alarm Rule

Function

This API is used to query an alarm rule based on the alarm rule ID.

URI

GET /V1.0/{project_id}/alarms/{alarm_id}

Parameter description

**Table 1** Parameter description
Parameter	Mandatory	Description
project_id	Yes	Specifies the project ID. For details about how to obtain the project ID, see Obtaining a Project ID.
alarm_id	Yes	Specifies the alarm rule ID.

Example

GET https://{Cloud Eye endpoint}/V1.0/{project_id}/alarms/al1441967036681YkazZ0deN

Request

None

Response

Response parameters

Parameter	Type	Description
metric_alarms	Array of objects	Specifies the list of alarm objects. For details, see Table 2.

Parameter

Type

Description

metric_alarms

Array of objects

Specifies the list of alarm objects.

For details, see Table 2.

**Table 2** **metric_alarms** field data structure description
Parameter	Type	Description
alarm_name	String	Specifies the alarm rule name.
alarm_description	String	Provides supplementary information about the alarm rule.
metric	Array of objects	Specifies the alarm metric. For details, see Table 3.
condition	Array of objects	Specifies the alarm triggering condition. For details, see Table 7.
alarm_enabled	Boolean	Specifies whether to enable the alarm rule.
alarm_level	Integer	Specifies the alarm severity. Possible values are 1, 2, 3 and 4, which indicates critical, major, minor, and informational, respectively.
alarm_action_enabled	Boolean	Specifies whether to enable the action to be triggered by an alarm.
alarm_actions	Array of objects	Specifies the action triggered by an alarm. For details, see Table 5.
ok_actions	Array of objects	Specifies the action to be triggered after the alarm is cleared. For details, see Table 6.
alarm_id	String	Specifies the alarm rule ID.
update_time	long	Specifies the time when the alarm status changed. The value is a UNIX timestamp and the unit is ms.
alarm_state	String	Specifies the alarm status. The value can be: ok: The alarm status is normal. alarm: An alarm is generated. insufficient_data: The required data is insufficient.

**Table 3** **metric** field data structure description
Parameter	Type	Description
namespace	String	Query the namespace of a service. For example, see Namespace for ECS namespace.
dimensions	Array of objects	Specifies the list of metric dimensions. For details, see Table 4.
metric_name	String	Specifies the metric ID. For example, if the monitoring metric of an ECS is CPU usage, metric_name is cpu_util.

**Table 4** **dimensions** field data structure description
Parameter	Type	Description
name	String	Specifies the dimension. For example, the ECS dimension is instance_id, which is listed in the key column in Dimension.
value	String	Specifies the dimension value, for example, an ECS ID. The value is a string of 1 to 256 characters.

**Table 5** **alarm_actions** field data structure description
Parameter	Type	Description
type	String	Specifies the alarm notification type. notification: indicates that a notification will be sent to the user. autoscaling: indicates that a scaling action will be triggered.
notificationList	Array of strings	Specifies the list of objects to be notified if the alarm status changes. NOTE: The IDs in the list are character strings.

**Table 6** **ok_actions** field data structure description
Parameter	Type	Description
type	String	Specifies the notification type when an alarm is triggered. notification: indicates that a notification will be sent to the user. autoscaling: indicates that a scaling action will be triggered.
notificationList	Array of strings	Specifies the list of objects to be notified if the alarm status changes. NOTE: The IDs in the list are character strings.

**Table 7** **condition** field data structure description
Parameter	Type	Description
period	Integer	Specifies the interval (seconds) for checking whether the configured alarm rules are met.
filter	String	Specifies the data rollup method. The following methods are supported: average: Cloud Eye calculates the average value of metric data within a rollup period. max: Cloud Eye calculates the maximum value of metric data within a rollup period. min: Cloud Eye calculates the minimum value of metric data within a rollup period. sum: Cloud Eye calculates the sum of metric data within a rollup period. variance: Cloud Eye calculates the variance value of metric data within a rollup period.
comparison_operator	String	Specifies the operator of alarm thresholds. Possible values are >, =, <, ≥, and ≤.
value	Double	Specifies the alarm threshold. The value ranges from 0 to Number. MAX_VALUE (1.7976931348623157e+108). For detailed thresholds, see the value range of each metric in the appendix. For example, you can set ECS cpu_util in Metrics to 80.
unit	String	Specifies the data unit. The value contains a maximum of 32 characters.
count	Integer	Specifies the number of consecutive occurrence times that the alarm policy was met. The value ranges from 1 to 5.

Example response

{
"metric_alarms":
  [
   {
    "alarm_name":"alarm-ipwx",
    "alarm_description":"",
    "metric":
     {
      "namespace":"SYS.ELB",
      "dimensions":
      [
       {
        "name":"lb_instance_id",
        "value":"44d06d10-bce0-4237-86b9-7b4d1e7d5621"
       }
      ],
      "metric_name":"m8_out_Bps"
      },
    "condition":
     {
      "period":300,
      "filter":"sum",
      "comparison_operator":">=",
      "value":0,
      "unit":"",
      "count":1
      },
    "alarm_enabled":true,
    "alarm_level": 2,
    "alarm_action_enabled":true,
    "alarm_actions":
     [
      {
       "type":"notification",
       "notificationList":["urn:smn:region:68438a86d98e427e907e0097b7e35d48:sd"]
      }
     ],
    "ok_actions":
     [
      {
       "type":"notification",
       "notificationList":["urn:smn:region:68438a86d98e427e907e0097b7e35d48:sd"]
      }
     ],
    "alarm_id":"al1498096535573r8DNy7Gyk",
    "update_time":1498100100000,
    "alarm_state":"alarm"
   }
  ]
}

Returned Values

Normal
200

Abnormal

Returned Value	Description
400 Bad Request	Request error.
401 Unauthorized	The authentication information is not provided or is incorrect.
403 Forbidden	You are forbidden to access the page requested.
408 Request Timeout	The request timed out.
429 Too Many Requests	Concurrent requests are excessive.
500 Internal Server Error	Failed to complete the request because of an internal service error.
503 Service Unavailable	The service is currently unavailable.