Creates a custom alert rule.

Before you call this operation, call the PutCustomMetric operation to report custom monitoring data. For more information, see PutCustomMetric.


OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer. OpenAPI Explorer dynamically generates the sample code of the operation for different SDKs.

Request parameters

Parameter Type Required Example Description
Action String Yes PutCustomMetricRule

The operation that you want to perform. Set the value to PutCustomMetricRule.

ComparisonOperator String Yes >=

The comparison operator before the threshold. Valid values:

  • >=
  • =
  • <=
  • >
  • <
  • !=
ContactGroups String Yes ECS_Group

The alert group that receives alert notifications. Separate multiple alert groups with commas (,).

EvaluationCount Integer Yes 3

The consecutive number of times for which the metric value is measured before an alert is triggered.

Level String Yes CRITICAL

The level of the alert. Valid values:

  • WARN
  • INFO
MetricName String Yes cpu_total

The name of the metric.

Note For more information about how to obtain the metric name, see DescribeCustomMetricList.
Resources String Yes [{"groupId":7378****,"dimension":"instanceId=i-hp3543t5e4sudb3s****"}]

The custom monitoring data to which the alert rule applies. The value includes the application group ID to which the custom monitoring data belongs and the dimension to which the metric belongs.

RuleId String Yes MyRuleId1

The ID of the alert rule.

Note You can specify an existing ID to modify the corresponding alert rule or specify a new ID to create an alert rule.
Statistics String Yes Average

The method that is used to calculate the metric values that trigger alerts.

Threshold String Yes 90

The threshold of the metric value.

GroupId String No 7378****

The ID of the application group to which the custom monitoring data belongs.

Note The value 0 indicates that the reported custom monitoring data does not belong to an application group.
RuleName String No CpuUsage

The name of the alert rule.

Webhook String No

The callback URL to which a POST request is sent when an alert is triggered based on the alert rule.

EffectiveInterval String No 00:00-23:59

The time period during which the alert rule is effective. Valid values: 00:00 to 23:59.

SilenceTime Integer No 86400

The mute period during which notifications are not repeatedly sent for an alert. Unit: seconds. Default value: 86400. The default value indicates one day.

Note Only one alert notification is sent during each mute period even if the metric value consecutively exceeds the alert threshold several times.
Period String No 300

The cycle that is used to aggregate custom monitoring data. Unit: seconds. Set the value to an integral multiple of 60. The original reporting cycle of custom monitoring data is used by default.

EmailSubject String No ECS instance

The subject of the alert notification email.

Response parameters

Parameter Type Example Description
Code String 200

The HTTP status code.

Note The value 200 indicates that the call was successful.
Message String ComparisonOperator is mandatory for this action.

The returned message. If the call was successful, the return value is null. If the call failed, an error message is returned.

RequestId String 65D50468-ECEF-48F1-A6E1-D952E89D9432

The ID of the request.

Success Boolean true

Indicates whether the call was successful. Valid values:

  • true: The call was successful.
  • false: The call failed.


Sample requests

&<Common request parameters>

Sample success responses

XML format


JSON format

	"Message": "",
	"Code": "200",
	"Success": true

Error codes

For a list of error codes, visit the API Error Center.