Modifies a scaling rule.
Debugging
Request parameters
Parameter | Type | Required | Example | Description |
---|---|---|---|---|
Action | String | Yes | ModifyScalingRule | The operation that you want to perform. Set the value to ModifyScalingRule. |
ScalingRuleId | String | Yes | asr-bp1dvirgwkoowxk7**** | The ID of the scaling rule that you want to modify. |
ScalingRuleName | String | No | scalingrule**** | The name of the scaling rule. The name must be 2 to 64 characters in length, and can contain letters, digits, underscores (_), hyphens (-), and periods (.). The name must start with a letter or a digit. The name of a scaling rule must be unique within an Alibaba Cloud account in a region. |
Cooldown | Integer | No | 60 | The cooldown period of the scaling rule. This parameter is available only if you set ScalingRuleType to SimpleScalingRule. Valid values: 0 to 86400. Unit: seconds. |
MinAdjustmentMagnitude | Integer | No | 1 | The minimum number of instances that must be scaled. This parameter takes effect only when |
AdjustmentType | String | No | QuantityChangeInCapacity | The adjustment method of the scaling rule. If you set ScalingRuleType to SimpleScalingRule or StepScalingRule, you must specify this parameter. Valid values:
|
AdjustmentValue | Integer | No | 100 | The number of instances that must be scaled based on the scaling rule. If you set ScalingRuleType to SimpleScalingRule or StepScalingRule, you must specify this parameter. The number of ECS instances to be scaled in a single scaling activity cannot exceed 1,000. Valid values of AdjustmentValue vary based on the value of AdjustmentType.
|
EstimatedInstanceWarmup | Integer | No | 60 | The warmup period of an ECS instance. This parameter is available only if you set ScalingRuleType to TargetTrackingScalingRule or PredictiveScalingRule. Auto Scaling adds ECS instances that are in the Warmup state to a scaling group but does not report monitoring data of the ECS instances to CloudMonitor during the warmup period. Note When Auto Scaling calculates the number of ECS instances that you want to scale, the ECS instances that are in the Warmup state are not counted towards the current capacity of the scaling group. Valid values: 0 to 86400. Unit: seconds. |
MetricName | String | No | CpuUtilization | The predefined metric that you want to monitor. If you set ScalingRuleType to TargetTrackingScalingRule or PredictiveScalingRule, you must specify this parameter. Valid values of MetricName when ScalingRuleType is set to TargetTrackingScalingRule:
Valid values of MetricName when ScalingRuleType is set to PredictiveScalingRule:
|
TargetValue | Float | No | 0.125 | The target value. This parameter is available only if you set ScalingRuleType to TargetTrackingScalingRule or PredictiveScalingRule. The value must be greater than 0 and can contain up to three decimal places. |
DisableScaleIn | Boolean | No | true | Specifies whether to disable scale-in. This parameter is available only if you set ScalingRuleType to TargetTrackingScalingRule. |
ScaleInEvaluationCount | Integer | No | 15 | The number of consecutive times that the event-triggered task created for scale-ins meets the threshold conditions before an alert is triggered. After a target tracking scaling rule is created, an event-triggered task is automatically created and associated with the target tracking scaling rule. |
ScaleOutEvaluationCount | Integer | No | 3 | The number of consecutive times that the event-triggered task created for scale-outs meets the threshold conditions before an alert is triggered. After a target tracking scaling rule is created, an event-triggered task is automatically created and associated with the target tracking scaling rule. |
PredictiveScalingMode | String | No | PredictAndScale | The mode of the predictive scaling rule. Valid values:
|
PredictiveValueBehavior | String | No | MaxOverridePredictiveValue | The action on the predicted maximum value. Valid values:
|
PredictiveValueBuffer | Integer | No | 50 | The ratio based on which the predicted value is increased when PredictiveValueBehavior is set to PredictiveValueOverrideMaxWithBuffer. If the predicted value increased by this ratio is greater than the initial maximum capacity, the increased value is used as the maximum value for prediction tasks. Valid values: 0 to 100. |
PredictiveTaskBufferTime | Integer | No | 30 | The amount of buffer time before the prediction task is executed. By default, all prediction tasks that are automatically created by a predictive scaling rule are executed on the hour. You can set a buffer time to execute prediction tasks and prepare resources in advance. Valid values: 0 to 60. |
InitialMaxSize | Integer | No | 100 | The maximum number of ECS instances that can be contained in the scaling group. If you specify InitialMaxSize, you must specify PredictiveValueBehavior. |
StepAdjustment.N.MetricIntervalUpperBound | Float | No | 5.0 | The upper limit of a step adjustment. This parameter takes effect only if you set ScalingRuleType to StepScalingRule. Valid values: -9.999999E18 to 9.999999E18. |
StepAdjustment.N.ScalingAdjustment | Integer | No | 1 | The number of ECS instances that you want to scale in each step adjustment. This parameter is available only if you set ScalingRuleType to StepScalingRule. |
StepAdjustment.N.MetricIntervalLowerBound | Float | No | 1.0 | The lower limit in a step adjustment. This parameter is available only if you set ScalingRuleType to StepScalingRule. Valid values: -9.999999E18 to 9.999999E18. |
AlarmDimension.N.DimensionKey | String | No | rulePool | The dimension key of the metric. |
AlarmDimension.N.DimensionValue | String | No | sgp-l1cbirz451yxu2**** | The dimension value of the metric. |
Response parameters
Parameter | Type | Example | Description |
---|---|---|---|
RequestId | String | 473469C7-AA6F-4DC5-B3DB-A3DC0DE3**** | The ID of the request. |
Examples
Sample requests
http(s)://ess.aliyuncs.com/?Action=ModifyScalingRule
&ScalingRuleId=asr-bp1dvirgwkoowxk7****
&ScalingRuleName=scalingrule****
&Cooldown=60
&MinAdjustmentMagnitude=1
&AdjustmentType=QuantityChangeInCapacity
&AdjustmentValue=100
&EstimatedInstanceWarmup=60
&MetricName=CpuUtilization
&TargetValue=0.125
&DisableScaleIn=true
&ScaleInEvaluationCount=15
&ScaleOutEvaluationCount=3
&PredictiveScalingMode=PredictAndScale
&PredictiveValueBehavior=MaxOverridePredictiveValue
&PredictiveValueBuffer=50
&PredictiveTaskBufferTime=30
&InitialMaxSize=100
&StepAdjustment=[{"MetricIntervalUpperBound":5.0,"ScalingAdjustment":1,"MetricIntervalLowerBound":1.0}]
&AlarmDimension=[{"DimensionKey":"rulePool","DimensionValue":"sgp-l1cbirz451yxu2****"}]
&<Common request parameters>
Sample success responses
XML
format
HTTP/1.1 200 OK
Content-Type:application/xml
<ModifyScalingRuleResponse>
<RequestId>473469C7-AA6F-4DC5-B3DB-A3DC0DE3****</RequestId>
</ModifyScalingRuleResponse>
JSON
format
HTTP/1.1 200 OK
Content-Type:application/json
{
"RequestId" : "473469C7-AA6F-4DC5-B3DB-A3DC0DE3****"
}
Error codes
For a list of error codes, see Service error codes.
HTTP status code | Error code | Error message | Description |
---|---|---|---|
404 | InvalidScalingRuleId.NotFound | The specified scaling rule does not exist. | The error message returned because the specified scaling rule does not exist within the Alibaba Cloud account. |
400 | InvalidScalingRuleName.Duplicate | The specified value of parameter <parameter name> is duplicated. | The error message returned because the scaling rule name already exists. |
400 | QuotaExceeded.ScalingRule | Scaling rule quota exceeded in the specified scaling group. | The error message returned because the maximum number of scaling rules in the scaling group has been reached. |
400 | TargetTrackingScalingRule.UnsupportedMetric | Specific metric is not supported for target tracking scaling rule. | The error message returned because target tracking scaling rules do not support the specified metric. |
400 | TargetTrackingScalingRule.DumplicateMetric | Only one TargetTrackingScaling rule for a given metric specification is allowed. | The error message returned because the metric is already specified for a target tracking scaling rule in the scaling group. |
400 | InvalidMinAdjustmentMagnitudeMismatchAdjustmentType | MinAdjustmentMagnitude is not supported by the specified adjustment type. | The error message returned because MinAdjustmentMagnitude cannot take effect for the adjustment method of the scaling rule. |
400 | InvalidStepAdjustments.MultipleNullUpperBound | At most one StepAdjustment may have an unspecified upper bound. | The error message returned because a step adjustment for which an upper limit is not specified already exists. |
400 | InvalidStepAdjustments.MultipleNullLowerBound | At most one StepAdjustment may have an unspecified lower bound. | The error message returned because a step adjustment for which a lower limit is not specified already exists. |
400 | InvalidStepAdjustments.NoNullLowerBound | There must be a StepAdjustment with an unspecified lower bound when one StepAdjustment has a negative lower bound. | The error message returned because the lower limit of a step adjustment is a negative value, but a different step adjustment without a lower limit does not exist. |
400 | InvalidStepAdjustments.NoNullUpperBound | There must be a StepAdjustment with an unspecified upper bound when one StepAdjustment has a positive upper bound. | The error message returned because the upper limit of a step adjustment is a positive value, but a different step adjustment without an upper limit does not exist. |
400 | InvalidStepAdjustments.Gap | StepAdjustment intervals can not have gaps between them. | The error message returned because the ranges of step adjustments have gaps. |
400 | InvalidStepAdjustments.Overlap | StepAdjustment intervals can not overlap. | The error message returned because the ranges of step adjustments overlap. |
400 | InvalidStepAdjustments.LowerGtUpper | LowerBound must be less than the UpperBound for StepAdjustment :%s. | The error message returned because the lower limit of a step adjustment is greater than or equal to the upper limit. |
400 | InvalidStepAdjustments.BothNull | Both lower and upper bounds of a StepAdjustment can not be left unspecified. | The error message returned because the upper limit and the lower limit of a step adjustment are not specified. |
400 | InvalidStepAdjustments.MaxNum | Your scaling rule can have at most %s StepAdjustments. | The error message returned because the maximum number of step adjustments in the scaling group has been reached. |
400 | StepBeyondPermitRange | Specific parameter "%s" beyond permit range. | The error message returned because the upper limit or lower limit of a step adjustment is invalid. |