Querying Alarm Triggering Policies

Last updated: 2020-06-04 16:09:47


    This is a legacy API which has been hidden and will no longer be updated. We recommend using the new Auto Scaling API 3.0 which is standardized and faster.

    1. API Description

    This API (DescribeScalingPolicy) is used to query the alarm trigger policy.
    Domain for API request: scaling.api.qcloud.com

    2. Input Parameters

    The following request parameter list only provides API request parameters. Common request parameters need to be added when the API is called. For more information, refer to Common Request Parameters. The Action field for this API is DescribeScalingConfiguration.

    Parameter Name Required Type Description
    scalingGroupId Yes String ID of scaling group. In this case, it represents the scaling group in which the alarm trigger policy to be queried locates. This parameter can be obtained by calling API Query Scaling Group List (DescribeScalingGroup).
    scalingPolicyIds.n No String An array of alarm trigger policy IDs to be queried. Array subscript starts from 0.
    scalingPolicyName No String Name of the alarm trigger policy to be queried.
    offset No Int Offset; default is 0.
    limit No Int The maximum number of alarm trigger policies allowed to be queried at a time. Default is 20.

    3. Output Parameters

    Parameter Name Type Description
    code Int Common error code; 0: Succeeded; other values: Failed. For more information, please refer to Common Error Codes on the Error Code page.
    codeDesc String Error code at business side. If the task succeeds, it will return "Success"; if the task fails, the specific business error reason will be returned.
    message String Module error message description depending on API.
    data Array Information on the list of alarm trigger policies returned for the query.
    totalCount Int Number of alarm trigger policies returned for the query.

    Parameter data is composed of the following parameters:

    Parameter Name Type Description
    scalingPolicyId String ID of alarm trigger policy returned for the query.
    scalingPolicyName String Name of alarm trigger policy returned for the query.
    adjustmentType String Adjustment method of scaling rules returned for the query. The possible values are:
    QuantityChangeInCapacity: Increasing or decreasing the instances by specified number.
    PercentChangeInCapacity: Increasing or decreasing instances by specified percentage.
    TotalCapacity: Adjusting the number of instances in the current scaling group to the specified number.
    UnhealthyInstance: Remove unhealthy instances (default policy cannot be modified or deleted).
    adjustmentValue Int Adjustment value for the scaling policy.
    metric Array Scaling rule, the composition of which is shown in the table below.
    notifyIdSet Array Notification group ID, or the user group ID (groupId), which indicates the user group where the user is located.
    createTime String Creation time of the alarm policy
    cooldown Int Cooldown time, a period of time when the corresponding scaling group is locked after a scaling activity is completed. During this period, this scaling group cannot execute other scaling activities.

    metric represents the scaling rule and is composed of the following parameters:

    Parameter Name Type Description
    dimensionName String Dimension. Available values include:
    cpu_usage: CPU usage.
    mem_usage: Memory usage.
    lan_outtraffic: Outbound bandwidth of the private network.
    lan_intraffic: Inbound bandwidth of the private network.
    comparisonOperator String Comparison operator. Available values include:
    Greater: Greater than
    EqualOrGreater: Greater than or equal to
    Less: Less than.
    EqualOrLess: Less than or equal to.
    Equal: Equal.
    NotEqual: Not equal.
    threshold Int Alarm threshold:
    cpu_usage: value range [0, 100], unit: %
    mem_usage: value range [0, 100], unit: %
    lan_outtraffic: value range >0, unit: Bps
    lan_intraffic: value range >0, unit: Bps

    4. Error Codes

    For common errors on this API, refer to AS Error Code.

    5. Example

    If a user wants to show that the scalingGroupId is the alarm trigger policy for asg-d4hmoms6, the request form may be as follows, where the instruction request parameter only sets the scalingGroupId.

    &<Common request parameters>

    The following results will be returned:

                    "scalingPolicyId": "asp-168y1thp",
                    "scalingPolicyName": "bono1d24",
                    "adjustmentType": "QuantityChangeInCapacity",
                    "adjustmentValue": 10,
                    "metric": {
                        "dimensionName": "cpu_usage",
                        "comparisonOperator": "EqualOrGreater",
                        "threshold": 50
                    "notifyIdSet": [
                    "createTime": "2016-03-21 14:07:42",
                    "cooldown": 300

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