AWS::AutoScalingPlans::ScalingPlan

The AWS::AutoScalingPlans::ScalingPlan resource defines an AWS Auto Scaling scaling plan. A scaling plan is used to scale application resources to size them appropriately to ensure that enough resource is available in the application at peak times and to reduce allocated resource during periods of low utilization. The following resources can be added to a scaling plan:

• Amazon EC2 Auto Scaling groups

• Amazon EC2 Spot Fleet requests

• Amazon ECS services

• Amazon DynamoDB tables and global secondary indexes

• Amazon Aurora Replicas

For more information, see the Scaling Plans User Guide

Syntax

To declare this entity in your AWS CloudFormation template, use the following syntax:

JSON

{
  "Type" : "AWS::AutoScalingPlans::ScalingPlan",
  "Properties" : {
      "ApplicationSource" : ApplicationSource,
      "ScalingInstructions" : [ ScalingInstruction, ... ]
    }
}

YAML

Type: AWS::AutoScalingPlans::ScalingPlan
Properties:
  ApplicationSource: 
    ApplicationSource
  ScalingInstructions: 
    - ScalingInstruction

Properties

ApplicationSource

A CloudFormation stack or a set of tags. You can create one scaling plan per application source. The ApplicationSource property must be present to ensure interoperability with the AWS Auto Scaling console.

Required: Yes

Type: ApplicationSource

Update requires: No interruption

ScalingInstructions

The scaling instructions.

Required: Yes

Type: Array of ScalingInstruction

Update requires: No interruption

Return values

Ref

When you pass the logical ID of an AWS::AutoScalingPlans::ScalingPlan resource to the intrinsic Ref function, the function returns the Amazon Resource Name (ARN) of the scaling plan. The format of the ARN is as follows:

arn:aws:autoscaling:region:123456789012:scalingPlan:scalingPlanName/plan-name:scalingPlanVersion/plan-version

For more information about using the Ref function, see Ref.

Examples

Scaling plan

The following example creates a scaling plan named myScalingPlan for an existing Auto Scaling group (AWS::AutoScaling::AutoScalingGroup) whose name you specify when launching the stack using this template. It specifies the TagFilters property as the application source. You can specify any tag key and tag value you want without affecting the stack, as long as the key-pair is unique for each scaling plan. This can be any value you choose that helps you identify your scaling plan configuration. However, if you also want to use the AWS Auto Scaling console to edit the scaling plan, then the tag must match the tag you chose for the Auto Scaling group.

The ScalingInstructions property includes information that's required to enable predictive scaling and dynamic scaling. In this example, the predictive scaling mode specifies ForecastOnly. In which case, AWS Auto Scaling generates forecasts with traffic predictions for the two days ahead, but does not schedule scaling actions to match the forecast.

JSON

{
  "AWSTemplateFormatVersion":"2010-09-09",
  "Parameters":{
    "myTagKey":{
      "Type":"String"
    },
    "myTagValue":{
      "Type":"String"
    },
    "myASGroup":{
      "Type":"String",
      "Description":"Name of the Auto Scaling group"
    },
    "ASGMinCapacity":{
      "Type":"Number"
    },
    "ASGMaxCapacity":{
      "Type":"Number"
    },
    "ASGTargetUtilization":{
      "Type":"Number",
      "Default":"50.0"
    },
    "ASGEstimatedInstanceWarmup":{
      "Type":"Number",
      "Default":"600"
    }
  },
  "Resources":{
    "myScalingPlan":{
      "Type":"AWS::AutoScalingPlans::ScalingPlan",
      "Properties":{
        "ApplicationSource":{
          "TagFilters":[
            {
              "Key":{
                "Ref":"myTagKey"
              },
              "Values":[{
                "Ref":"myTagValue"
              }]
            }
          ]
        },
        "ScalingInstructions":[
          {
            "MinCapacity":{
              "Ref":"ASGMinCapacity"
            }, 
            "MaxCapacity":{
              "Ref":"ASGMaxCapacity"
            }, 
            "ServiceNamespace":"autoscaling",
            "ScalableDimension":"autoscaling:autoScalingGroup:DesiredCapacity",
            "ResourceId":{
              "Fn::Join":[
                "/",
                [
                  "autoScalingGroup",
                  {
                    "Ref":"myASGroup"
                  }
                ]
              ]
            },
            "TargetTrackingConfigurations":[
              {
                "PredefinedScalingMetricSpecification":{
                  "PredefinedScalingMetricType":"ASGAverageCPUUtilization"
                },
                "TargetValue":{
                  "Ref":"ASGTargetUtilization"
                }, 
                "EstimatedInstanceWarmup":{
                  "Ref":"ASGEstimatedInstanceWarmup"
                }
              }
            ],
            "PredefinedLoadMetricSpecification":{
              "PredefinedLoadMetricType":"ASGTotalCPUUtilization"
            },
            "PredictiveScalingMode":"ForecastOnly",
            "PredictiveScalingMaxCapacityBehavior":"SetMaxCapacityAboveForecastCapacity",
            "PredictiveScalingMaxCapacityBuffer":25,
            "ScheduledActionBufferTime":600
          }
        ]
      }
    }
  }
}

YAML

AWSTemplateFormatVersion: 2010-09-09
Parameters:
  myTagKey:
    Type: String
  myTagValue:
    Type: String
  myASGroup:
    Type: String
    Description: Name of the Auto Scaling group
  ASGMinCapacity:
    Type: Number
  ASGMaxCapacity:
    Type: Number
  ASGTargetUtilization:
    Type: Number
    Default: 50.0
  ASGEstimatedInstanceWarmup:
    Type: Number
    Default: 600
Resources:
  myScalingPlan:
    Type: AWS::AutoScalingPlans::ScalingPlan
    Properties:
      ApplicationSource:
        TagFilters:
          - Key: !Ref myTagKey
            Values:
              - !Ref myTagValue
      ScalingInstructions:
        - MinCapacity: !Ref ASGMinCapacity
          MaxCapacity: !Ref ASGMaxCapacity
          ServiceNamespace: autoscaling
          ScalableDimension: autoscaling:autoScalingGroup:DesiredCapacity
          ResourceId: !Join
            - /
            - - autoScalingGroup
              - !Ref myASGroup
          TargetTrackingConfigurations:
            - PredefinedScalingMetricSpecification:
                PredefinedScalingMetricType: "ASGAverageCPUUtilization"
              TargetValue: !Ref ASGTargetUtilization
              EstimatedInstanceWarmup: !Ref ASGEstimatedInstanceWarmup
          PredefinedLoadMetricSpecification:
            PredefinedLoadMetricType: "ASGTotalCPUUtilization"
          PredictiveScalingMode: "ForecastOnly"
          PredictiveScalingMaxCapacityBehavior: "SetMaxCapacityAboveForecastCapacity"
          PredictiveScalingMaxCapacityBuffer: 25
          ScheduledActionBufferTime: 600