Resources:
  SSMParameterCWAgentCCA60AE1:
    Type: AWS::SSM::Parameter
    Properties:
      Type: String
      Value: |-
        {
            "agent": {
              "metrics_collection_interval": 60
            },
            "metrics": {
              "namespace": "EC2_ASG_Memory",
              "append_dimensions": {
                "AutoScalingGroupName": "${aws:AutoScalingGroupName}",
                "InstanceId": "${aws:InstanceId}"
              },
              "aggregation_dimensions": [["AutoScalingGroupName"]],
              "metrics_collected": {
                "mem": {
                  "measurement": [
                    {"name": "mem_used_percent", "rename": "MemoryUtilization", "unit": "Percent"}
                  ],
                  "metrics_collection_interval": 60
                }
              }
            }
        }
      Description: Cloudwatch Agent Parameter
      Name: /cwagent/linux/asg
      Tier: Standard
  VPCB9E5F0B4:
    Type: AWS::EC2::VPC
    Properties:
      CidrBlock: 10.0.0.0/16
      EnableDnsHostnames: true
      EnableDnsSupport: true
      InstanceTenancy: default
      Tags:
        - Key: Name
          Value: SampleASGMemoryMetric/VPC
  VPCPublicSubnet1SubnetB4246D30:
    Type: AWS::EC2::Subnet
    Properties:
      VpcId:
        Ref: VPCB9E5F0B4
      AvailabilityZone:
        Fn::Select:
          - 0
          - Fn::GetAZs: ""
      CidrBlock: 10.0.0.0/24
      MapPublicIpOnLaunch: true
      Tags:
        - Key: aws-cdk:subnet-name
          Value: Public
        - Key: aws-cdk:subnet-type
          Value: Public
        - Key: Name
          Value: SampleASGMemoryMetric/VPC/PublicSubnet1
  VPCPublicSubnet1RouteTableFEE4B781:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId:
        Ref: VPCB9E5F0B4
      Tags:
        - Key: Name
          Value: SampleASGMemoryMetric/VPC/PublicSubnet1
  VPCPublicSubnet1RouteTableAssociation0B0896DC:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      RouteTableId:
        Ref: VPCPublicSubnet1RouteTableFEE4B781
      SubnetId:
        Ref: VPCPublicSubnet1SubnetB4246D30
  VPCPublicSubnet1DefaultRoute91CEF279:
    Type: AWS::EC2::Route
    Properties:
      RouteTableId:
        Ref: VPCPublicSubnet1RouteTableFEE4B781
      DestinationCidrBlock: 0.0.0.0/0
      GatewayId:
        Ref: VPCIGWB7E252D3
    DependsOn:
      - VPCVPCGW99B986DC
  VPCPublicSubnet2Subnet74179F39:
    Type: AWS::EC2::Subnet
    Properties:
      VpcId:
        Ref: VPCB9E5F0B4
      AvailabilityZone:
        Fn::Select:
          - 1
          - Fn::GetAZs: ""
      CidrBlock: 10.0.1.0/24
      MapPublicIpOnLaunch: true
      Tags:
        - Key: aws-cdk:subnet-name
          Value: Public
        - Key: aws-cdk:subnet-type
          Value: Public
        - Key: Name
          Value: SampleASGMemoryMetric/VPC/PublicSubnet2
  VPCPublicSubnet2RouteTable6F1A15F1:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId:
        Ref: VPCB9E5F0B4
      Tags:
        - Key: Name
          Value: SampleASGMemoryMetric/VPC/PublicSubnet2
  VPCPublicSubnet2RouteTableAssociation5A808732:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      RouteTableId:
        Ref: VPCPublicSubnet2RouteTable6F1A15F1
      SubnetId:
        Ref: VPCPublicSubnet2Subnet74179F39
  VPCPublicSubnet2DefaultRouteB7481BBA:
    Type: AWS::EC2::Route
    Properties:
      RouteTableId:
        Ref: VPCPublicSubnet2RouteTable6F1A15F1
      DestinationCidrBlock: 0.0.0.0/0
      GatewayId:
        Ref: VPCIGWB7E252D3
    DependsOn:
      - VPCVPCGW99B986DC
  VPCIGWB7E252D3:
    Type: AWS::EC2::InternetGateway
    Properties:
      Tags:
        - Key: Name
          Value: SampleASGMemoryMetric/VPC
  VPCVPCGW99B986DC:
    Type: AWS::EC2::VPCGatewayAttachment
    Properties:
      VpcId:
        Ref: VPCB9E5F0B4
      InternetGatewayId:
        Ref: VPCIGWB7E252D3
  EC2SecurityGroup5161A771:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: security group for SSH
      SecurityGroupEgress:
        - CidrIp: 0.0.0.0/0
          Description: Allow all outbound traffic by default
          IpProtocol: "-1"
      SecurityGroupIngress:
        - CidrIp: 0.0.0.0/0
          Description: allow SSH access from anywhere
          FromPort: 22
          IpProtocol: tcp
          ToPort: 22
      Tags:
        - Key: Name
          Value: SampleASGMemoryMetric-SG
      VpcId:
        Ref: VPCB9E5F0B4
  EC2Role24AC9335:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Statement:
          - Action: sts:AssumeRole
            Effect: Allow
            Principal:
              Service: ec2.amazonaws.com
        Version: "2012-10-17"
      ManagedPolicyArns:
        - Fn::Join:
            - ""
            - - "arn:"
              - Ref: AWS::Partition
              - :iam::aws:policy/CloudWatchAgentServerPolicy
        - Fn::Join:
            - ""
            - - "arn:"
              - Ref: AWS::Partition
              - :iam::aws:policy/CloudWatchAgentAdminPolicy
        - Fn::Join:
            - ""
            - - "arn:"
              - Ref: AWS::Partition
              - :iam::aws:policy/AmazonSSMManagedInstanceCore
      Tags:
        - Key: Name
          Value: SampleASGMemoryMetric-iam-role
  ASGLaunchTemplateProfile0E09E1CE:
    Type: AWS::IAM::InstanceProfile
    Properties:
      Roles:
        - Ref: EC2Role24AC9335
    DependsOn:
      - SSMParameterCWAgentCCA60AE1
  ASGLaunchTemplate4E80D90E:
    Type: AWS::EC2::LaunchTemplate
    Properties:
      LaunchTemplateData:
        BlockDeviceMappings:
          - DeviceName: /dev/sda1
            Ebs:
              VolumeSize: 8
        IamInstanceProfile:
          Arn:
            Fn::GetAtt:
              - ASGLaunchTemplateProfile0E09E1CE
              - Arn
        ImageId:
          Fn::FindInMap:
            - ASGLaunchTemplateAmiMap3BB1B3AD
            - Ref: AWS::Region
            - ami
        InstanceType: t3.micro
        SecurityGroupIds:
          - Fn::GetAtt:
              - EC2SecurityGroup5161A771
              - GroupId
        TagSpecifications:
          - ResourceType: instance
            Tags:
              - Key: Name
                Value: memory-asg-server
          - ResourceType: volume
            Tags:
              - Key: Name
                Value: memory-asg-server
        UserData:
          Fn::Base64: |-
            #!/bin/bash
            region=ap-southeast-1
            ssm_param_name=ssm:/cwagent/linux/asg
            apt-get update -y
            # Ensure apt-get is killed after update to avoid resource-locking
            killall apt apt-get
            sleep 3
            apt-get install -y wget stress
            echo Downloading Cloudwatch Agent
            sleep 3
            wget https://s3.$region.amazonaws.com/amazoncloudwatch-agent-$region/ubuntu/amd64/latest/amazon-cloudwatch-agent.deb
            echo Installing Cloudwatch Agent
            dpkg -i -E ./amazon-cloudwatch-agent.deb
            echo Starting Cloudwatch Agent
            sleep 3
            /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -a fetch-config -m ec2 -c $ssm_param_name -s
      TagSpecifications:
        - ResourceType: launch-template
          Tags:
            - Key: Name
              Value: memory-asg-server
    DependsOn:
      - SSMParameterCWAgentCCA60AE1
  AutoScalingGroupASGF7F65794:
    Type: AWS::AutoScaling::AutoScalingGroup
    Properties:
      MaxSize: "2"
      MinSize: "1"
      LaunchTemplate:
        LaunchTemplateId:
          Ref: ASGLaunchTemplate4E80D90E
        Version:
          Fn::GetAtt:
            - ASGLaunchTemplate4E80D90E
            - LatestVersionNumber
      VPCZoneIdentifier:
        - Ref: VPCPublicSubnet1SubnetB4246D30
        - Ref: VPCPublicSubnet2Subnet74179F39
    UpdatePolicy:
      AutoScalingScheduledAction:
        IgnoreUnmodifiedGroupSizeProperties: true
  StepScalingPolicyLowerPolicyE6EEFF5F:
    Type: AWS::AutoScaling::ScalingPolicy
    Properties:
      AutoScalingGroupName:
        Ref: AutoScalingGroupASGF7F65794
      AdjustmentType: ChangeInCapacity
      MetricAggregationType: Average
      PolicyType: StepScaling
      StepAdjustments:
        - MetricIntervalUpperBound: 0
          ScalingAdjustment: -1
  StepScalingPolicyLowerAlarm41E89925:
    Type: AWS::CloudWatch::Alarm
    Properties:
      ComparisonOperator: LessThanOrEqualToThreshold
      EvaluationPeriods: 3
      AlarmActions:
        - Ref: StepScalingPolicyLowerPolicyE6EEFF5F
      AlarmDescription: Lower threshold scaling alarm
      Dimensions:
        - Name: AutoScalingGroupName
          Value:
            Ref: AutoScalingGroupASGF7F65794
      MetricName: MemoryUtilization
      Namespace: EC2_ASG_Memory
      Period: 60
      Statistic: Average
      Threshold: 20
  StepScalingPolicyUpperPolicy2CA010F0:
    Type: AWS::AutoScaling::ScalingPolicy
    Properties:
      AutoScalingGroupName:
        Ref: AutoScalingGroupASGF7F65794
      AdjustmentType: ChangeInCapacity
      MetricAggregationType: Average
      PolicyType: StepScaling
      StepAdjustments:
        - MetricIntervalLowerBound: 0
          ScalingAdjustment: 1
  StepScalingPolicyUpperAlarm14655AF0:
    Type: AWS::CloudWatch::Alarm
    Properties:
      ComparisonOperator: GreaterThanOrEqualToThreshold
      EvaluationPeriods: 3
      AlarmActions:
        - Ref: StepScalingPolicyUpperPolicy2CA010F0
      AlarmDescription: Upper threshold scaling alarm
      Dimensions:
        - Name: AutoScalingGroupName
          Value:
            Ref: AutoScalingGroupASGF7F65794
      MetricName: MemoryUtilization
      Namespace: EC2_ASG_Memory
      Period: 60
      Statistic: Average
      Threshold: 30
Mappings:
  ASGLaunchTemplateAmiMap3BB1B3AD:
    ap-south-1:
      ami: ami-01e436b65d641478d
    eu-north-1:
      ami: ami-0c0895eeadb466123
    eu-west-3:
      ami: ami-05262a4bcea6f9fa2
    eu-west-2:
      ami: ami-015891366865ea5ca
    eu-west-1:
      ami: ami-05f1fedd8287cef0b
    ap-northeast-3:
      ami: ami-076592ee533d1857c
    ap-northeast-2:
      ami: ami-0970cc54a3aa77466
    ap-northeast-1:
      ami: ami-0ba151ad81cdd97be
    ca-central-1:
      ami: ami-0c0ef44e5ccbd075f
    sa-east-1:
      ami: ami-0ac6b9321493324ee
    ap-southeast-1:
      ami: ami-00def9d5d68359454
    ap-southeast-2:
      ami: ami-0bd8241d9d44dc95f
    eu-central-1:
      ami: ami-05fc4b58217803cb7
    ap-southeast-3:
      ami: ami-06e035fc820f4e16f
    us-east-1:
      ami: ami-0481e8ba7f486bd99
    us-east-2:
      ami: ami-0a14db46282743a66
    us-west-1:
      ami: ami-0a417a9f917183811
    us-west-2:
      ami: ami-088b024fca114855d