cdp-17

{
  "AWSTemplateFormatVersion": "2010-09-09",

  "Description": "This is a template for the AWS CloudFormation in order to build a CloudDesignPattern No17. Copyright 2012 Serverworks Co, Ltd. All Rights Reserved. ",

  "Parameters" : {
    "AMI" : {
      "Type"                  : "String",
      "Description"           : "AMI ID",
      "Default"               : "ami-2819aa29",
      "ConstraintDescription" : "must be a valid AMI ID."
    },
    "KeyPair" : {
      "Type"                  : "String",
      "Description"           : "Key Pair",
      "Default"               : "foo",
      "ConstraintDescription" : "must be a valid Key Pair."
    },
    "InstanceType" : {
      "Type"                  : "String",
      "Description"           : "Instance type (t1.micro, m1.small, c1.medium, m1.medium, m1.large, m1.xlarge, m2.xlarge, m2.2xlarge, m2.4xlarge, c1.xlarge)",
      "Default"               : "t1.micro",
      "AllowedValues"         : [ "t1.micro","m1.small","c1.medium","m1.medium","m1.large","m1.xlarge","m2.xlarge","m2.2xlarge","m2.4xlarge","c1.xlarge" ],
      "ConstraintDescription" : "must be a valid Amazon EC2 instance type."
    },
    "PeakDateTime" : {
      "Type"                  : "String",
      "Description"           : "Peak UTC date time (yyyy-mm-ddThh:mi:ssZ)",
      "Default"               : "2012-08-28T18:55:00Z",
      "ConstraintDescription" : "must be a valid Peak date time."
    },
    "PeakTimeInstance" : {
      "Type"                  : "String",
      "Description"           : "Number of peak time instance",
      "Default"               : "10",
      "ConstraintDescription" : "must be a valid instances of peak time."
    },
    "AWSAccessKeyId" : {
      "Type"                  : "String",
      "Description"           : "input the aws access key id.",
      "ConstraintDescription" : "must be a valid AWS Access Key ID."
    },
    "AWSSecretKey" : {
      "Type"                  : "String",
      "Description"           : "input the aws secret key was Converted to \"\\\\/\" a \"/\".",
      "ConstraintDescription" : "must be a valid AWS Secret Key."
    }
  },

  "Resources": {
    "LoadBalancer": {
      "Type": "AWS::ElasticLoadBalancing::LoadBalancer",
      "Properties": {
        "AvailabilityZones": [
          "ap-northeast-1a",
          "ap-northeast-1b"
        ],
        "HealthCheck": {
          "HealthyThreshold": "10",
          "Interval": "30",
          "Target": "HTTP:80/index.html",
          "Timeout": "5",
          "UnhealthyThreshold": "2"
        },
        "Listeners": [
          {
            "InstancePort": "80",
            "LoadBalancerPort": "80",
            "Protocol": "HTTP",
            "PolicyNames": [
            ]
          }
        ]
      }
    },
    "AutoScalingGroup": {
      "Type": "AWS::AutoScaling::AutoScalingGroup",
      "Properties": {
        "AvailabilityZones": [
          "ap-northeast-1a",
          "ap-northeast-1b"
        ],
        "Cooldown": "300",
        "DesiredCapacity": "2",
        "MinSize": "2",
        "MaxSize": "20",
        "LaunchConfigurationName": { "Ref": "LaunchConfiguration" },
        "LoadBalancerNames": [ { "Ref": "LoadBalancer" } ]
      }
    },
    "LaunchConfiguration": {
      "Type": "AWS::AutoScaling::LaunchConfiguration",
      "Properties": {
        "KeyName": { "Ref" : "KeyPair" },
        "ImageId": { "Ref" : "AMI" },
        "InstanceType": { "Ref": "InstanceType" },
        "SecurityGroups": [ 
          { "Ref" : "SecurityGroup" } 
        ]
      }
    },
    "CPUAlarmHigh": {
     "Type": "AWS::CloudWatch::Alarm",
     "Properties": {
        "AlarmDescription": "Scale-up if CPU > 80% for 5 minutes",
        "MetricName": "CPUUtilization",
        "Namespace": "AWS/EC2",
        "Statistic": "Average",
        "Period": "300",
        "EvaluationPeriods": "2",
        "Threshold": "90",
        "AlarmActions": [ { "Ref": "WebServerScaleUpPolicy" } ],
        "Dimensions": [
          {
            "Name": "AutoScalingGroupName",
            "Value": { "Ref": "AutoScalingGroup" }
          }
        ],
        "ComparisonOperator": "GreaterThanThreshold"
      }
    },
    "WebServerScaleUpPolicy" : {
      "Type" : "AWS::AutoScaling::ScalingPolicy",
      "Properties" : {
        "AdjustmentType" : "ChangeInCapacity",
        "AutoScalingGroupName" : { "Ref" : "AutoScalingGroup" },
        "Cooldown" : "60",
        "ScalingAdjustment" : "1"
      }
    },
    "CPUAlarmLow": {
     "Type": "AWS::CloudWatch::Alarm",
     "Properties": {
        "AlarmDescription": "Scale-down if CPU < 60% for 5 minutes",
        "MetricName": "CPUUtilization",
        "Namespace": "AWS/EC2",
        "Statistic": "Average",
        "Period": "300",
        "EvaluationPeriods": "2",
        "Threshold": "70",
        "AlarmActions": [ { "Ref": "WebServerScaleDownPolicy" } ],
        "Dimensions": [
          {
            "Name": "AutoScalingGroupName",
            "Value": { "Ref": "AutoScalingGroup" }
          }
        ],
        "ComparisonOperator": "LessThanThreshold"
      }
    },
    "WebServerScaleDownPolicy" : {
      "Type" : "AWS::AutoScaling::ScalingPolicy",
      "Properties" : {
        "AdjustmentType" : "ChangeInCapacity",
        "AutoScalingGroupName" : { "Ref" : "AutoScalingGroup" },
        "Cooldown" : "60",
        "ScalingAdjustment" : "-1"
      }
    },
    "ManagementInstance": {
      "Type": "AWS::EC2::Instance",
      "Properties": {
        "AvailabilityZone": "ap-northeast-1a",
        "DisableApiTermination": "FALSE",
        "ImageId": { "Ref" : "AMI" },
        "InstanceType": { "Ref" : "InstanceType" },
        "KernelId": "aki-44992845",
        "KeyName": { "Ref" : "KeyPair" },
        "Monitoring": "false",
        "SecurityGroups": [
          { "Ref" : "SecurityGroup" }
        ],
        "Tags": [
          { "Key": "Name", "Value": "ManagementInstance" }
        ],
        "UserData" : { "Fn::Base64" : { "Fn::Join" : [ "", [
          "#!/bin/bash\n",
          "export JAVA_HOME=/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64/jre\n",
          "export AWS_AUTO_SCALING_HOME=/opt/aws/apitools/as\n",
          "export PATH=$PATH:${AWS_AUTO_SCALING_HOME}/bin\n",
          "cp /opt/aws/credential-file-path.template /opt/aws/credential-file-path\n",
          "sed -i \"s/^AWSAccessKeyId.*/AWSAccessKeyId=", { "Ref" : "AWSAccessKeyId" }, "/g\" /opt/aws/credential-file-path\n",
          "sed -i \"s/^AWSSecretKey.*/AWSSecretKey=", { "Ref" : "AWSSecretKey" }, "/g\" /opt/aws/credential-file-path\n",
          "as-put-scheduled-update-group-action peak_action -g ", { "Ref": "AutoScalingGroup" }, " --region ap-northeast-1 --aws-credential-file /opt/aws/credential-file-path --name \"scale out\" --time \"", { "Ref": "PeakDateTime" }, "\" -min-size ", { "Ref":  "PeakTimeInstance" }, " -max-size 20\n",
          "shutdown -h now\n"
        ] ] } }
      }
    },
    "SecurityGroup": {
      "Type": "AWS::EC2::SecurityGroup",
      "Properties": {
        "GroupDescription": "Security",
        "SecurityGroupIngress": [
          {
            "IpProtocol": "tcp",
            "FromPort": "22",
            "ToPort": "22",
            "CidrIp": "0.0.0.0/0"
          },
          {
            "IpProtocol": "tcp",
            "FromPort": "80",
            "ToPort": "80",
            "CidrIp": "0.0.0.0/0"
          }
        ]
      }
    }
  },
  "Outputs" : {
    "ManagementInstancePublicDNS" : {
      "Value" : { "Fn::GetAtt" : [ "ManagementInstance", "PublicDnsName" ] },
      "Description" : ""
    }
  }
}