{
  "AWSTemplateFormatVersion" : "2010-09-09",

  "Description": "AWS CloudFormation Sample Template CloudWatch_Logs: Provisions a minimal web application, and demonstrates how to stream the provisioning logs (cloud-init.log, cfn-init.log, cfn-hup.log, and cfn-wire.log) to CloudWatch Logs. This eliminates the need to SSH into an EC2 instance for debugging provisioning issues. Simply view the logs in the AWS CloudWatch console. **WARNING** You will be billed for the AWS resources if you create a stack from this template.",

  "Parameters" : {
    "InstanceType" : {
      "Description" : "WebServer EC2 instance type",
      "Type" : "String",
      "Default" : "t2.small",
      "AllowedValues" : [ "t1.micro", "t2.nano", "t2.micro", "t2.small", "t2.medium", "t2.large", "m1.small", "m1.medium", "m1.large", "m1.xlarge", "m2.xlarge", "m2.2xlarge", "m2.4xlarge", "m3.medium", "m3.large", "m3.xlarge", "m3.2xlarge", "m4.large", "m4.xlarge", "m4.2xlarge", "m4.4xlarge", "m4.10xlarge", "c1.medium", "c1.xlarge", "c3.large", "c3.xlarge", "c3.2xlarge", "c3.4xlarge", "c3.8xlarge", "c4.large", "c4.xlarge", "c4.2xlarge", "c4.4xlarge", "c4.8xlarge", "g2.2xlarge", "g2.8xlarge", "r3.large", "r3.xlarge", "r3.2xlarge", "r3.4xlarge", "r3.8xlarge", "i2.xlarge", "i2.2xlarge", "i2.4xlarge", "i2.8xlarge", "d2.xlarge", "d2.2xlarge", "d2.4xlarge", "d2.8xlarge", "hi1.4xlarge", "hs1.8xlarge", "cr1.8xlarge", "cc2.8xlarge", "cg1.4xlarge"]
,
      "ConstraintDescription" : "must be a valid EC2 instance type."
    },

    "KeyName": {
      "Description" : "Name of an existing EC2 KeyPair to enable SSH access to the instances",
      "Type": "AWS::EC2::KeyPair::KeyName",
      "ConstraintDescription" : "must be the name of an existing EC2 KeyPair."
    },

    "SSHLocation" : {
      "Description" : "The IP address range that can be used to SSH to the EC2 instances",
      "Type": "String",
      "MinLength": "9",
      "MaxLength": "18",
      "Default": "0.0.0.0/0",
      "AllowedPattern": "(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})/(\\d{1,2})",
      "ConstraintDescription": "must be a valid IP CIDR range of the form x.x.x.x/x."
    }
  },

  "Mappings" : {
    "Region2Examples" : {
      "ap-east-1"      : { "Examples" : "https://s3-ap-east-1.amazonaws.com/cloudformation-examples-ap-east-1" },
      "ap-northeast-1" : { "Examples" : "https://s3-ap-northeast-1.amazonaws.com/cloudformation-examples-ap-northeast-1" },
      "ap-northeast-2" : { "Examples" : "https://s3-ap-northeast-2.amazonaws.com/cloudformation-examples-ap-northeast-2" },
      "ap-northeast-3" : { "Examples" : "https://s3-ap-northeast-3.amazonaws.com/cloudformation-examples-ap-northeast-3" },
      "ap-south-1"     : { "Examples" : "https://s3-ap-south-1.amazonaws.com/cloudformation-examples-ap-south-1" },
      "ap-south-2"     : { "Examples" : "https://s3-ap-south-2.amazonaws.com/cloudformation-examples-ap-south-2" },
      "ap-southeast-1" : { "Examples" : "https://s3-ap-southeast-1.amazonaws.com/cloudformation-examples-ap-southeast-1" },
      "ap-southeast-2" : { "Examples" : "https://s3-ap-southeast-2.amazonaws.com/cloudformation-examples-ap-southeast-2" },
      "ap-southeast-3" : { "Examples" : "https://s3-ap-southeast-3.amazonaws.com/cloudformation-examples-ap-southeast-3" },
      "ap-southeast-4" : { "Examples" : "https://s3-ap-southeast-4.amazonaws.com/cloudformation-examples-ap-southeast-4" },
      "ca-central-1"   : { "Examples" : "https://s3-ca-central-1.amazonaws.com/cloudformation-examples-ca-central-1" },
      "cn-north-1"     : { "Examples" : "https://s3.cn-north-1.amazonaws.com.cn/cloudformation-examples-cn-north-1" },
      "cn-northwest-1" : { "Examples" : "https://s3.cn-northwest-1.amazonaws.com.cn/cloudformation-examples-cn-northwest-1" },
      "eu-central-1"   : { "Examples" : "https://s3-eu-central-1.amazonaws.com/cloudformation-examples-eu-central-1" },
      "il-central-1" : { "Examples" : "https://s3-il-central-1.amazonaws.com/cloudformation-examples-il-central-1" },
      "eu-north-1"     : { "Examples" : "https://s3-eu-north-1.amazonaws.com/cloudformation-examples-eu-north-1" },
      "eu-west-1"      : { "Examples" : "https://s3-eu-west-1.amazonaws.com/cloudformation-examples-eu-west-1" },
      "eu-west-2"      : { "Examples" : "https://s3-eu-west-2.amazonaws.com/cloudformation-examples-eu-west-2" },
      "eu-west-3"      : { "Examples" : "https://s3-eu-west-3.amazonaws.com/cloudformation-examples-eu-west-3" },
      "me-south-1"     : { "Examples" : "https://s3-me-south-1.amazonaws.com/cloudformation-examples-me-south-1" },
      "me-central-1"   : { "Examples" : "https://s3-me-central-1.amazonaws.com/cloudformation-examples-me-central-1" },
      "eu-south-2"     : { "Examples" : "https://s3-eu-south-2.amazonaws.com/cloudformation-examples-eu-south-2" },
      "eu-central-2"   : { "Examples" : "https://s3-eu-central-2.amazonaws.com/cloudformation-examples-eu-central-2" },
      "sa-east-1"      : { "Examples" : "https://s3-sa-east-1.amazonaws.com/cloudformation-examples-sa-east-1" },
      "us-east-1"      : { "Examples" : "https://s3.amazonaws.com/cloudformation-examples-us-east-1" },
      "us-east-2"      : { "Examples" : "https://s3-us-east-2.amazonaws.com/cloudformation-examples-us-east-2" },
      "us-west-1"      : { "Examples" : "https://s3-us-west-1.amazonaws.com/cloudformation-examples-us-west-1" },
      "us-west-2"      : { "Examples" : "https://s3-us-west-2.amazonaws.com/cloudformation-examples-us-west-2" }
    }
,
    "AWSInstanceType2Arch" : {
      "c1.medium"   : { "Arch" : "HVM64"  },
      "c1.xlarge"   : { "Arch" : "HVM64"  },
      "c3.2xlarge"  : { "Arch" : "HVM64"  },
      "c3.4xlarge"  : { "Arch" : "HVM64"  },
      "c3.8xlarge"  : { "Arch" : "HVM64"  },
      "c3.large"    : { "Arch" : "HVM64"  },
      "c3.xlarge"   : { "Arch" : "HVM64"  },
      "c4.2xlarge"  : { "Arch" : "HVM64"  },
      "c4.4xlarge"  : { "Arch" : "HVM64"  },
      "c4.8xlarge"  : { "Arch" : "HVM64"  },
      "c4.large"    : { "Arch" : "HVM64"  },
      "c4.xlarge"   : { "Arch" : "HVM64"  },
      "cc2.8xlarge" : { "Arch" : "HVM64"  },
      "cr1.8xlarge" : { "Arch" : "HVM64"  },
      "d2.2xlarge"  : { "Arch" : "HVM64"  },
      "d2.4xlarge"  : { "Arch" : "HVM64"  },
      "d2.8xlarge"  : { "Arch" : "HVM64"  },
      "d2.xlarge"   : { "Arch" : "HVM64"  },
      "g2.2xlarge"  : { "Arch" : "HVMG2"  },
      "g2.8xlarge"  : { "Arch" : "HVMG2"  },
      "hi1.4xlarge" : { "Arch" : "HVM64"  },
      "hs1.8xlarge" : { "Arch" : "HVM64"  },
      "i2.2xlarge"  : { "Arch" : "HVM64"  },
      "i2.4xlarge"  : { "Arch" : "HVM64"  },
      "i2.8xlarge"  : { "Arch" : "HVM64"  },
      "i2.xlarge"   : { "Arch" : "HVM64"  },
      "m1.large"    : { "Arch" : "HVM64"  },
      "m1.medium"   : { "Arch" : "HVM64"  },
      "m1.small"    : { "Arch" : "HVM64"  },
      "m1.xlarge"   : { "Arch" : "HVM64"  },
      "m2.2xlarge"  : { "Arch" : "HVM64"  },
      "m2.4xlarge"  : { "Arch" : "HVM64"  },
      "m2.xlarge"   : { "Arch" : "HVM64"  },
      "m3.2xlarge"  : { "Arch" : "HVM64"  },
      "m3.large"    : { "Arch" : "HVM64"  },
      "m3.medium"   : { "Arch" : "HVM64"  },
      "m3.xlarge"   : { "Arch" : "HVM64"  },
      "m4.10xlarge" : { "Arch" : "HVM64"  },
      "m4.2xlarge"  : { "Arch" : "HVM64"  },
      "m4.4xlarge"  : { "Arch" : "HVM64"  },
      "m4.large"    : { "Arch" : "HVM64"  },
      "m4.xlarge"   : { "Arch" : "HVM64"  },
      "r3.2xlarge"  : { "Arch" : "HVM64"  },
      "r3.4xlarge"  : { "Arch" : "HVM64"  },
      "r3.8xlarge"  : { "Arch" : "HVM64"  },
      "r3.large"    : { "Arch" : "HVM64"  },
      "r3.xlarge"   : { "Arch" : "HVM64"  },
      "t1.micro"    : { "Arch" : "HVM64"  },
      "t2.large"    : { "Arch" : "HVM64"  },
      "t2.medium"   : { "Arch" : "HVM64"  },
      "t2.micro"    : { "Arch" : "HVM64"  },
      "t2.nano"     : { "Arch" : "HVM64"  },
      "t2.small"    : { "Arch" : "HVM64"  }
    },

    "AWSInstanceType2NATArch" : {
      "c1.medium"   : { "Arch" : "NATHVM64"  },
      "c1.xlarge"   : { "Arch" : "NATHVM64"  },
      "c3.2xlarge"  : { "Arch" : "NATHVM64"  },
      "c3.4xlarge"  : { "Arch" : "NATHVM64"  },
      "c3.8xlarge"  : { "Arch" : "NATHVM64"  },
      "c3.large"    : { "Arch" : "NATHVM64"  },
      "c3.xlarge"   : { "Arch" : "NATHVM64"  },
      "c4.2xlarge"  : { "Arch" : "NATHVM64"  },
      "c4.4xlarge"  : { "Arch" : "NATHVM64"  },
      "c4.8xlarge"  : { "Arch" : "NATHVM64"  },
      "c4.large"    : { "Arch" : "NATHVM64"  },
      "c4.xlarge"   : { "Arch" : "NATHVM64"  },
      "cc2.8xlarge" : { "Arch" : "NATHVM64"  },
      "cr1.8xlarge" : { "Arch" : "NATHVM64"  },
      "d2.2xlarge"  : { "Arch" : "NATHVM64"  },
      "d2.4xlarge"  : { "Arch" : "NATHVM64"  },
      "d2.8xlarge"  : { "Arch" : "NATHVM64"  },
      "d2.xlarge"   : { "Arch" : "NATHVM64"  },
      "g2.2xlarge"  : { "Arch" : "NATHVMG2"  },
      "g2.8xlarge"  : { "Arch" : "NATHVMG2"  },
      "hi1.4xlarge" : { "Arch" : "NATHVM64"  },
      "hs1.8xlarge" : { "Arch" : "NATHVM64"  },
      "i2.2xlarge"  : { "Arch" : "NATHVM64"  },
      "i2.4xlarge"  : { "Arch" : "NATHVM64"  },
      "i2.8xlarge"  : { "Arch" : "NATHVM64"  },
      "i2.xlarge"   : { "Arch" : "NATHVM64"  },
      "m1.large"    : { "Arch" : "NATHVM64"  },
      "m1.medium"   : { "Arch" : "NATHVM64"  },
      "m1.small"    : { "Arch" : "NATHVM64"  },
      "m1.xlarge"   : { "Arch" : "NATHVM64"  },
      "m2.2xlarge"  : { "Arch" : "NATHVM64"  },
      "m2.4xlarge"  : { "Arch" : "NATHVM64"  },
      "m2.xlarge"   : { "Arch" : "NATHVM64"  },
      "m3.2xlarge"  : { "Arch" : "NATHVM64"  },
      "m3.large"    : { "Arch" : "NATHVM64"  },
      "m3.medium"   : { "Arch" : "NATHVM64"  },
      "m3.xlarge"   : { "Arch" : "NATHVM64"  },
      "m4.10xlarge" : { "Arch" : "NATHVM64"  },
      "m4.2xlarge"  : { "Arch" : "NATHVM64"  },
      "m4.4xlarge"  : { "Arch" : "NATHVM64"  },
      "m4.large"    : { "Arch" : "NATHVM64"  },
      "m4.xlarge"   : { "Arch" : "NATHVM64"  },
      "r3.2xlarge"  : { "Arch" : "NATHVM64"  },
      "r3.4xlarge"  : { "Arch" : "NATHVM64"  },
      "r3.8xlarge"  : { "Arch" : "NATHVM64"  },
      "r3.large"    : { "Arch" : "NATHVM64"  },
      "r3.xlarge"   : { "Arch" : "NATHVM64"  },
      "t1.micro"    : { "Arch" : "NATHVM64"  },
      "t2.large"    : { "Arch" : "NATHVM64"  },
      "t2.medium"   : { "Arch" : "NATHVM64"  },
      "t2.micro"    : { "Arch" : "NATHVM64"  },
      "t2.nano"     : { "Arch" : "NATHVM64"  },
      "t2.small"    : { "Arch" : "NATHVM64"  }
    }
,
    "AWSRegionArch2AMI" : {
      "af-south-1"       : {"HVM64" : "ami-0412806bd0f2cf75f", "HVMG2" : "NOT_SUPPORTED"},
      "ap-east-1"        : {"HVM64" : "ami-0e0a21f8bd5195698", "HVMG2" : "NOT_SUPPORTED"},
      "ap-northeast-1"   : {"HVM64" : "ami-0c3e3e7af817ad732", "HVMG2" : "NOT_SUPPORTED"},
      "ap-northeast-2"   : {"HVM64" : "ami-0f8dbbf156e3a5cc6", "HVMG2" : "NOT_SUPPORTED"},
      "ap-northeast-3"   : {"HVM64" : "ami-02a371c41f08cc499", "HVMG2" : "NOT_SUPPORTED"},
      "ap-south-1"       : {"HVM64" : "ami-0f4ab3c8db917e421", "HVMG2" : "NOT_SUPPORTED"},
      "ap-south-2"       : {"HVM64" : "ami-008b9c53bb1dcd29c", "HVMG2" : "NOT_SUPPORTED"},
      "ap-southeast-1"   : {"HVM64" : "ami-0c3189395e5b39df7", "HVMG2" : "NOT_SUPPORTED"},
      "ap-southeast-2"   : {"HVM64" : "ami-040d698318c0b1575", "HVMG2" : "NOT_SUPPORTED"},
      "ap-southeast-3"   : {"HVM64" : "ami-065dcca47dde26602", "HVMG2" : "NOT_SUPPORTED"},
      "ap-southeast-4"   : {"HVM64" : "ami-043e25432cf94e107", "HVMG2" : "NOT_SUPPORTED"},
      "il-central-1"     : {"HVM64" : "ami-0054be7d7d9d65a1d", "HVMG2" : "NOT_SUPPORTED"},
      "ca-central-1"     : {"HVM64" : "ami-05f40104305a2cdf7", "HVMG2" : "NOT_SUPPORTED"},
      "cn-north-1"       : {"HVM64" : "ami-03f1e08d409b1e5fd", "HVMG2" : "NOT_SUPPORTED"},
      "cn-northwest-1"   : {"HVM64" : "ami-00093746b9a0e272a", "HVMG2" : "NOT_SUPPORTED"},
      "eu-central-1"     : {"HVM64" : "ami-0f454ec961da9a046", "HVMG2" : "NOT_SUPPORTED"},
      "eu-north-1"       : {"HVM64" : "ami-0e78cd18c67fcf512", "HVMG2" : "NOT_SUPPORTED"},
      "eu-south-1"       : {"HVM64" : "ami-07d048788725b9602", "HVMG2" : "NOT_SUPPORTED"},
      "eu-west-1"        : {"HVM64" : "ami-0db5ca3e5748fb7e2", "HVMG2" : "NOT_SUPPORTED"},
      "eu-west-2"        : {"HVM64" : "ami-07baf6b15b7387f24", "HVMG2" : "NOT_SUPPORTED"},
      "eu-west-3"        : {"HVM64" : "ami-05a13fbd8aa57eedc", "HVMG2" : "NOT_SUPPORTED"},
      "me-south-1"       : {"HVM64" : "ami-0007de3fdcaba7e44", "HVMG2" : "NOT_SUPPORTED"},
      "me-central-1"     : {"HVM64" : "ami-06ce88defa3fc74ed", "HVMG2" : "NOT_SUPPORTED"},
      "eu-south-2"       : {"HVM64" : "ami-051306f4e885d6de4", "HVMG2" : "NOT_SUPPORTED"},
      "eu-central-2"     : {"HVM64" : "ami-0fcd532574732cb0f", "HVMG2" : "NOT_SUPPORTED"},
      "sa-east-1"        : {"HVM64" : "ami-07f6e9fce0e888425", "HVMG2" : "NOT_SUPPORTED"},
      "us-east-1"        : {"HVM64" : "ami-01989ebfd388ea377", "HVMG2" : "NOT_SUPPORTED"},
      "us-east-2"        : {"HVM64" : "ami-0de69dde1945155da", "HVMG2" : "NOT_SUPPORTED"},
      "us-west-1"        : {"HVM64" : "ami-08fe20a82dcaa1c92", "HVMG2" : "NOT_SUPPORTED"},
      "us-west-2"        : {"HVM64" : "ami-05848d23360f5edfe", "HVMG2" : "NOT_SUPPORTED"}
    }
,
    "Region2Principal" : {
      "ap-east-1"      : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "ap-northeast-1" : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "ap-northeast-2" : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "ap-northeast-3" : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "ap-south-1"     : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "ap-south-2"     : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "ap-southeast-1" : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "ap-southeast-2" : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "ap-southeast-3" : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "ap-southeast-4" : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "il-central-1" : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "ca-central-1"   : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "cn-north-1"     : { "EC2Principal" : "ec2.amazonaws.com.cn", "OpsWorksPrincipal" : "opsworks.amazonaws.com.cn" },
      "cn-northwest-1" : { "EC2Principal" : "ec2.amazonaws.com.cn", "OpsWorksPrincipal" : "opsworks.amazonaws.com.cn" },
      "eu-central-1"   : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "eu-north-1"     : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "eu-west-1"      : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "eu-west-2"      : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "eu-west-3"      : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "me-south-1"     : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "me-central-1"   : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "eu-south-2"     : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "eu-central-2"   : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "sa-east-1"      : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "us-east-1"      : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "us-east-2"      : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "us-west-1"      : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" },
      "us-west-2"      : { "EC2Principal" : "ec2.amazonaws.com", "OpsWorksPrincipal" : "opsworks.amazonaws.com" }
    }
,
    "Region2ARNPrefix": {
      "af-south-1"     : { "ARNPrefix": "arn:aws:" },
      "ap-east-1"      : { "ARNPrefix": "arn:aws:" },
      "ap-northeast-1" : { "ARNPrefix": "arn:aws:" },
      "ap-northeast-2" : { "ARNPrefix": "arn:aws:" },
      "ap-northeast-3" : { "ARNPrefix": "arn:aws:" },
      "ap-south-1"     : { "ARNPrefix": "arn:aws:" },
      "ap-south-2"     : { "ARNPrefix": "arn:aws:" },
      "ap-southeast-1" : { "ARNPrefix": "arn:aws:" },
      "ap-southeast-2" : { "ARNPrefix": "arn:aws:" },
      "ap-southeast-3" : { "ARNPrefix": "arn:aws:" },
      "ap-southeast-4" : { "ARNPrefix": "arn:aws:" },
      "il-central-1"   : { "ARNPrefix": "arn:aws:" },
      "ca-central-1"   : { "ARNPrefix": "arn:aws:" },
      "cn-north-1"     : { "ARNPrefix": "arn:aws-cn:" },
      "cn-northwest-1" : { "ARNPrefix": "arn:aws-cn:" },
      "eu-central-1"   : { "ARNPrefix": "arn:aws:" },
      "eu-central-2"   : { "ARNPrefix": "arn:aws:" },
      "eu-north-1"     : { "ARNPrefix": "arn:aws:" },
      "eu-south-1"     : { "ARNPrefix": "arn:aws:" },
      "eu-west-1"      : { "ARNPrefix": "arn:aws:" },
      "eu-west-2"      : { "ARNPrefix": "arn:aws:" },
      "eu-west-3"      : { "ARNPrefix": "arn:aws:" },
      "me-south-1"     : { "ARNPrefix": "arn:aws:" },
      "me-central-1"   : { "ARNPrefix": "arn:aws:" },
      "eu-south-2"     : { "ARNPrefix": "arn:aws:" },
      "sa-east-1"      : { "ARNPrefix": "arn:aws:" },
      "us-east-1"      : { "ARNPrefix": "arn:aws:" },
      "us-east-2"      : { "ARNPrefix": "arn:aws:" },
      "us-west-1"      : { "ARNPrefix": "arn:aws:" },
      "us-west-2"      : { "ARNPrefix": "arn:aws:" }
    }

  },

  "Resources" : {
    "LogRole": {
      "Type": "AWS::IAM::Role",
      "Properties": {
        "AssumeRolePolicyDocument": {
          "Version": "2012-10-17",
          "Statement": [ {
            "Effect": "Allow",
            "Principal": { "Service": [{ "Fn::FindInMap" : ["Region2Principal", {"Ref" : "AWS::Region"}, "EC2Principal"]}] },
            "Action": [ "sts:AssumeRole" ]
        } ] },
        "Path": "/",
        "Policies": [ {
          "PolicyName": "LogRolePolicy",
          "PolicyDocument": {
            "Version": "2012-10-17",
            "Statement": [ {
              "Effect": "Allow",
              "Action": ["logs:CreateLogGroup", "logs:CreateLogStream", "logs:PutLogEvents", "logs:DescribeLogStreams"],
              "Resource": [ { "Fn::Join" : ["", [ { "Fn::FindInMap" : ["Region2ARNPrefix", {"Ref" : "AWS::Region"}, "ARNPrefix"] }, 
                            "logs:*:*:*" ]]}]
          } ] }
        } ]
      }
    },

    "LogRoleInstanceProfile": {
      "Type": "AWS::IAM::InstanceProfile",
      "Properties": {
        "Path": "/",
        "Roles": [ { "Ref": "LogRole" } ]
      }
    },

    "CloudFormationLogs": {
      "Type": "AWS::Logs::LogGroup",
      "Properties": {
        "RetentionInDays": 7
      }
    },

    "WebServerInstance" : {
      "Type" : "AWS::EC2::Instance",
      "Metadata" : {
        "AWS::CloudFormation::Init" : {
          "configSets" : {
            "install_all" : [ "install_cfn", "install_app", "install_logs" ]
          },

          "install_cfn" : {
            "files" : {
              "/etc/cfn/cfn-hup.conf" : {
                "content" : { "Fn::Join" : ["", [
                  "[main]\n",
                  "stack=", { "Ref" : "AWS::StackId" }, "\n",
                  "region=", { "Ref" : "AWS::Region" }, "\n"
                ]]},
                "mode"    : "000400",
                "owner"   : "root",
                "group"   : "root"
              },

              "/etc/cfn/hooks.d/cfn-auto-reloader.conf" : {
                "content": { "Fn::Join" : ["", [
                  "[cfn-auto-reloader-hook]\n",
                  "triggers=post.update\n",
                  "path=Resources.WebServerInstance.Metadata.AWS::CloudFormation::Init\n",
                  "action=/opt/aws/bin/cfn-init -v ",
                  "         --stack ", { "Ref" : "AWS::StackName" },
                  "         --resource WebServerInstance ",
                  "         --configsets install_all ",
                  "         --region ", { "Ref" : "AWS::Region" }, "\n",
                  "runas=root\n"
                ]]},
		"mode"    : "000400",
                "owner"   : "root",
                "group"   : "root"
              }
            },

            "services" : {
              "sysvinit" : {
                "cfn-hup" : { "enabled" : "true", "ensureRunning" : "true",
                              "files" : ["/etc/cfn/cfn-hup.conf", "/etc/cfn/hooks.d/cfn-auto-reloader.conf"]}
              }
            }
          },

          "install_app" : {
            "packages" : {
              "yum" : {
                "httpd" : []
              }
            },

            "files" : {
              "/var/www/html/index.html" : {
                "content" : { "Fn::Join" : ["\n", [
                  "<img src=\"", {"Fn::FindInMap" : ["Region2Examples", {"Ref" : "AWS::Region"}, "Examples"]}, "/cloudformation_graphic.png\" alt=\"AWS CloudFormation Logo\"/>",
                  "<h1>Congratulations, you have successfully launched the AWS CloudFormation sample.</h1>"
                ]]},
                "mode"    : "000644",
                "owner"   : "root",
                "group"   : "root"
              }
            },

            "services" : {
              "sysvinit" : {
                "httpd"    : { "enabled" : "true", "ensureRunning" : "true" }
              }
            }
          },

          "install_logs": {
            "packages" : {
              "yum" : {
                "awslogs" : []
              }
            },

            "files": {
              "/etc/awslogs/awslogs.conf": {
                "content": { "Fn::Join": [ "", [
                  "[general]\n",
                  "state_file= /var/awslogs/state/agent-state\n",

                  "[/var/log/cloud-init.log]\n",
                  "file = /var/log/cloud-init.log\n",
                  "log_group_name = ", { "Ref": "CloudFormationLogs" }, "\n",
                  "log_stream_name = {instance_id}/cloud-init.log\n",
                  "datetime_format = \n",

                  "[/var/log/cloud-init-output.log]\n",
                  "file = /var/log/cloud-init-output.log\n",
                  "log_group_name = ", { "Ref": "CloudFormationLogs" }, "\n",
                  "log_stream_name = {instance_id}/cloud-init-output.log\n",
                  "datetime_format = \n",

                  "[/var/log/cfn-init.log]\n",
                  "file = /var/log/cfn-init.log\n",
                  "log_group_name = ", { "Ref": "CloudFormationLogs" }, "\n",
                  "log_stream_name = {instance_id}/cfn-init.log\n",
                  "datetime_format = \n",

                  "[/var/log/cfn-hup.log]\n",
                  "file = /var/log/cfn-hup.log\n",
                  "log_group_name = ", { "Ref": "CloudFormationLogs" }, "\n",
                  "log_stream_name = {instance_id}/cfn-hup.log\n",
                  "datetime_format = \n",

                  "[/var/log/cfn-wire.log]\n",
                  "file = /var/log/cfn-wire.log\n",
                  "log_group_name = ", { "Ref": "CloudFormationLogs" }, "\n",
                  "log_stream_name = {instance_id}/cfn-wire.log\n",
                  "datetime_format = \n",

                  "[/var/log/httpd]\n",
                  "file = /var/log/httpd/*\n",
                  "log_group_name = ", { "Ref": "CloudFormationLogs" }, "\n",
                  "log_stream_name = {instance_id}/httpd\n",
                  "datetime_format = %d/%b/%Y:%H:%M:%S\n"
                ] ] },
                "mode": "000444",
                "owner": "root",
                "group": "root"
              },
              "/etc/awslogs/awscli.conf": {
                "content": { "Fn::Join": [ "", [
                  "[plugins]\n",
                  "cwlogs = cwlogs\n",
                  "[default]\n",
                  "region = ", { "Ref" : "AWS::Region" }, "\n"
                ] ] },
                "mode": "000444",
                "owner": "root",
                "group": "root"
              }
            },
            "commands" : {
              "01_create_state_directory" : {
                "command" : "mkdir -p /var/awslogs/state"
              }
            },
            "services" : {
              "sysvinit" : {
                "awslogs"    : { "enabled" : "true", "ensureRunning" : "true",
                                 "files" : [ "/etc/awslogs/awslogs.conf" ] }
              }
            }
          }
        }
      },
      "Properties" : {
        "SecurityGroups" : [ { "Ref" : "InstanceSecurityGroup" } ],
        "KeyName" : { "Ref" : "KeyName" },
        "InstanceType" : { "Ref" : "InstanceType" },
        "IamInstanceProfile" : { "Ref" : "LogRoleInstanceProfile" },
        "ImageId" : { "Fn::FindInMap" : [ "AWSRegionArch2AMI", { "Ref" : "AWS::Region" },
                                          { "Fn::FindInMap" : [ "AWSInstanceType2Arch", { "Ref" : "InstanceType" },
                                          "Arch" ] } ] },
        "UserData"       : { "Fn::Base64" : { "Fn::Join" : ["", [
             "#!/bin/bash -xe\n",
             "yum update -y aws-cfn-bootstrap\n",

             "/opt/aws/bin/cfn-init -v ",
             "         --stack ", { "Ref" : "AWS::StackName" },
             "         --resource WebServerInstance ",
             "         --configsets install_all ",
             "         --region ", { "Ref" : "AWS::Region" }, "\n",
             
             "/opt/aws/bin/cfn-signal -e $? ",
             "         --stack ", { "Ref" : "AWS::StackName" },
             "         --resource WebServerInstance ",
             "         --region ", { "Ref" : "AWS::Region" }, "\n"
        ]]}}
      },
      "CreationPolicy" : {
        "ResourceSignal" : {
          "Timeout" : "PT15M"
        }
      }
    },

    "InstanceSecurityGroup" : {
      "Type" : "AWS::EC2::SecurityGroup",
      "Properties" : {
        "GroupDescription" : "Enable SSH access and HTTP access on the inbound port",
        "SecurityGroupIngress" : [ {
          "IpProtocol" : "tcp",
          "FromPort" : "22",
          "ToPort" : "22",
          "CidrIp" : { "Ref" : "SSHLocation"}
        },
        {
          "IpProtocol" : "tcp",
          "FromPort" : "80",
          "ToPort" : "80",
          "CidrIp" : "0.0.0.0/0"
        } ]
      }
    }
  },

  "Outputs" : {
    "URL" : {
      "Description" : "URL of the sample website",
      "Value" :  { "Fn::Join" : [ "", [ "http://", { "Fn::GetAtt" : [ "WebServerInstance", "PublicDnsName" ]}]]}
    }
  }
}
