Help Center/ Cloud Eye/ API Reference/ API/ Alarms/ Alarm Templates/ This API is used to modify a custom template.
Updated on 2026-06-11 GMT+08:00

This API is used to modify a custom template.

Function

This API is used to modify a custom template.

Debugging

You can debug this API through automatic authentication in API Explorer or use the SDK sample code generated by API Explorer.

Authorization Information

Each account has all the permissions required to call all APIs, but IAM users must be assigned the required permissions.

  • If you are using role/policy-based authorization, see Permissions Policies and Supported Actions for details on the required permissions.
  • If you are using identity policy-based authorization, the following identity policy-based permissions are required.

    Action

    Access Level

    Resource Type (*: required)

    Condition Key

    Alias

    Dependencies

    ces:customAlarmTemplates:put

    Write

    -

    g:EnterpriseProjectId

    -

    -

URI

PUT /v2/{project_id}/alarm-templates/{template_id}

Table 1 Path Parameters

Parameter

Mandatory

Type

Description

project_id

Yes

String

Definition

Project ID. It is used to specify the project that an asset belongs to. You can query the assets of a project by project ID. You can obtain the project ID from the API or console. For details, see Obtaining a Project ID.

Constraints

N/A

Range

1 to 64 characters.

Default Value

N/A

template_id

Yes

String

Definition

Alarm template ID.

Constraints

N/A

Range

The value starts with at and allows 2 to 64 characters. It can contain letters and digits.

Default Value

N/A

Request Parameters

Table 2 Request header parameters

Parameter

Mandatory

Type

Description

X-Auth-Token

No

String

Definition

User token.

Constraints:

None

Value range:

The value can contain 1 to 16,384 characters.

Default value:

None

Table 3 Request body parameters

Parameter

Mandatory

Type

Description

template_name

Yes

String

Definition

Alarm template name.

Constraints

N/A

Range

The value allows 1 to 128 characters. It must start with a letter and can only contain letters, digits, underscores (_), and hyphens (-).

Default Value

N/A

template_type

No

Integer

Definition

Custom alarm template type.

Constraints

N/A

Range

0: metric. 2: event.

Default Value

0

template_description

No

String

Definition

Alarm template description.

Constraints

N/A

Range

[0,256]

Default Value

An empty string

policies

Yes

Array of UpdateAlarmTemplatePolicies objects

Alarm policies in an alarm template.

Table 4 UpdateAlarmTemplatePolicies

Parameter

Mandatory

Type

Description

namespace

Yes

String

Definition

Namespace of the service. For details, see Services Interconnected with Cloud Eye.

Constraints

N/A

Range

The value is in the service.item format. The values of service and item must start with a letter and contain only letters, digits, and underscores (_). It can contain 3 to 32 characters.

Default Value

N/A

dimension_name

No

String

Definition

Resource dimension.

Constraints

When the value of template_type is 0 or not specified, dimension_name in policies is mandatory. When the value of template_type is 2, dimension_name is empty.

Range

The value must start with a letter. Each dimension allows a maximum of 32 characters and can only contain digits, letters, underscores (_), and hyphens (-). Multiple dimensions are separated by commas (,). A maximum of four dimensions are supported. A maximum of 131 characters are allowed. Example: instance_id for single-dimension scenarios and instance_id,disk for multi-dimension scenarios.

Default Value

N/A

metric_name

Yes

String

Definition

Metric name of a resource. For details about the metric names of each resource, see their service documentation. You can navigate there from Services Interconnected with Cloud Eye.

Constraints

N/A

Range

The value must start with a letter and can only contain letters, digits, underscores (_), and hyphens (-). It allows 1 to 96 characters. For example, the ECS metric cpu_util indicates the CPU usage of an ECS. The DDS metric mongo001_command_ps indicates the command execution frequency.

Default Value

N/A

period

Yes

Integer

Definition

Interval (seconds) for checking whether the alarm rule conditions are met.

Constraints

N/A

Range

The value can be:

  • 0: default value. This value can be used for event alarms.

  • 1: original metric period. For example, if the original period of an RDS metric is 60s, the metric data is collected and calculated every 60s.

  • 300: The metric data is collected and calculated every 5 minutes.

  • 1200: The metric data is collected and calculated every 20 minutes.

  • 3600: The metric data is collected and calculated every hour.

  • 14400: The metric data is collected and calculated every 4 hours.

  • 86400: The metric data is collected and calculated every day.

Default Value

N/A

filter

Yes

String

Definition

Aggregation method.

Constraints

When period is set to 1 (original value), the filter field does not take effect. The default value of filter is average. The filter parameter takes effect only when period is greater than 1.

Range

  • average

  • variance

  • min: minimum value.

  • max: maximum value.

  • sum

Default Value

N/A

comparison_operator

Yes

String

Definition

Threshold symbol.

Constraints

The threshold symbols for metric alarms are >, >=, <, <=, =, !=, cycle_decrease, cycle_increase, and cycle_wave. The threshold symbols for event alarms are >, >=, <, <=, =, and !=.

Range

The value can be >, <, >=, <=, =, !=, cycle_decrease, cycle_increase, or cycle_wave. cycle_decrease indicates the decrease relative to the last period. cycle_increase indicates the increase relative to the last period. cycle_wave indicates the increase or decrease relative to the last period.

Default Value

N/A

value

No

Number

Definition

Alarm threshold. For details, see Services Interconnected with Cloud Eye.

Constraints

If there is only one threshold, value and alarm_level are used in pairs. If there are both hierarchical_value and value, hierarchical_value is used.

Range

-1.7976931348623157e+108 to 1.7976931348623157e+108

Default Value

N/A

hierarchical_value

No

HierarchicalValue object

Definition

Multi-level alarm threshold.

Constraints

If there are both hierarchical_value and value, hierarchical_value is used.

When you create or modify an alarm rule, you can set only one threshold in the following scenarios:

  1. The alarm type is Metric and the alarm policy is Trigger an alarm when all policies are met.

  2. The alarm type is Event.

unit

No

String

Definition

Data unit.

Constraints

N/A

Range

[0,32]

Default Value

N/A

selected_unit

No

String

Definition

The unit you selected, which is used for subsequent metric data display and calculation. A maximum of 64 characters are allowed.

Constraints

N/A

Range

0 to 64 characters

Default Value

N/A

count

Yes

Integer

Definition

Number of times that the alarm triggering conditions are met.

Constraints

N/A

Range

For event alarms, the value ranges from 1 to 180. For metric and website alarms, the value can be 1, 2, 3, 4, 5, 10, 15, 30, 60, 90, 120, or 180.

Default Value

N/A

suppress_duration

No

Integer

Definition

Alarm suppression duration, in seconds. This parameter corresponds to the last field in the alarm policy when you create an alarm rule. This field is used to mitigate frequent alarm occurrences.

Constraints

N/A

Range

The value can be:

  • 0: A metric alarm is generated only once. An event alarm is not suppressed in the immediate triggering scenario, and is generated only once in the accumulated triggering scenario.

  • 300: An alarm is generated every 5 minutes once the alarm triggering condition is met.

  • 600: An alarm is generated every 10 minutes once the alarm triggering condition is met.

  • 900: An alarm is generated every 15 minutes once the alarm triggering condition is met.

  • 1800: An alarm is generated every 30 minutes once the alarm triggering condition is met.

  • 3600: An alarm is generated every 60 minutes once the alarm triggering condition is met.

  • 10800: An alarm is generated every 3 hours once the alarm triggering condition is met.

  • 21600: An alarm is generated every 6 hours once the alarm triggering condition is met.

  • 43200: An alarm is generated every 12 hours once the alarm triggering condition is met.

  • 86400: An alarm is generated once every day once the alarm triggering condition is met.

Default Value

N/A

alarm_level

No

Integer

Definition

Alarm severity.

Constraints

N/A

Range

The value can be:

  • 1: critical

  • 2: major

  • 3: minor

  • 4: warning

Default Value

N/A

Table 5 HierarchicalValue

Parameter

Mandatory

Type

Description

critical

No

Double

Definition

Threshold for critical alarms.

Constraints

N/A

Range

[-1.7976931348623157e+108, 1.7976931348623157e+108]

Default Value

N/A

major

No

Double

Definition

Threshold for major alarms.

Constraints

N/A

Range

[-1.7976931348623157e+108, 1.7976931348623157e+108]

Default Value

N/A

minor

No

Double

Definition

Threshold for minor alarms.

Constraints

N/A

Range

[-1.7976931348623157e+108, 1.7976931348623157e+108]

Default Value

N/A

info

No

Double

Definition

Threshold for warnings.

Constraints

N/A

Range

[-1.7976931348623157e+108, 1.7976931348623157e+108]

Default Value

N/A

Response Parameters

Status code: 204

No Content

Status code: 400

Table 6 Response body parameters

Parameter

Type

Description

error_code

String

Status codes customized by each cloud service when a request error occurs.

error_msg

String

Request error message.

request_id

String

Request ID.

Status code: 401

Table 7 Response body parameters

Parameter

Type

Description

error_code

String

Status codes customized by each cloud service when a request error occurs.

error_msg

String

Request error message.

request_id

String

Request ID.

Status code: 403

Table 8 Response body parameters

Parameter

Type

Description

error_code

String

Status codes customized by each cloud service when a request error occurs.

error_msg

String

Request error message.

request_id

String

Request ID.

Status code: 404

Table 9 Response body parameters

Parameter

Type

Description

error_code

String

Status codes customized by each cloud service when a request error occurs.

error_msg

String

Request error message.

request_id

String

Request ID.

Status code: 500

Table 10 Response body parameters

Parameter

Type

Description

error_code

String

Status codes customized by each cloud service when a request error occurs.

error_msg

String

Request error message.

request_id

String

Request ID.

Example Requests

Modify the my_template custom alarm template, including its metric period, aggregation method, threshold, unit, count, alarm suppression duration, and alarm severity.

{
  "template_name" : "my_template",
  "template_description" : "hello world",
  "policies" : [ {
    "namespace" : "SYS.ECS",
    "dimension_name" : "instance_id",
    "metric_name" : "cpu_util",
    "period" : 300,
    "filter" : "sum",
    "comparison_operator" : ">",
    "value" : 2,
    "unit" : "bit/s",
    "count" : 2,
    "alarm_level" : 2,
    "suppress_duration" : 300
  } ]
}

Example Responses

None

Status Codes

Status Code

Description

204

No Content

400

Parameter verification failed.

401

Not authenticated.

403

Authentication failed.

404

Resource not found.

500

Internal system error.

Error Codes

See Error Codes.