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

  "Description" : "Sample template showing how to create a VPC environment for AWS OpsWorks. The stack contains 2 subnets: the first subnet is public and contains the load balancer, a NAT device for internet access from the private subnet. The second subnet is private. You will be billed for the AWS resources used if you create a stack from this template.",

  "Parameters" : {

    "NATInstanceType" : {
      "Description" : "NAT Device EC2 instance type",
      "Type" : "String",
      "Default" : "m1.small",
      "AllowedValues" : [ "t1.micro","m1.small","m1.medium","m1.large","m1.xlarge","m2.xlarge","m2.2xlarge","m2.4xlarge","c1.medium","c1.xlarge","cc1.4xlarge","cc2.8xlarge","cg1.4xlarge"],
      "ConstraintDescription" : "must be a valid EC2 instance type."
    }
  },

  "Mappings" : {
    "AWSNATAMI" : {
      "us-east-1"      : { "AMI" : "ami-c6699baf" },
      "us-west-2"      : { "AMI" : "ami-52ff7262" },
      "us-west-1"      : { "AMI" : "ami-3bcc9e7e" },
      "eu-west-1"      : { "AMI" : "ami-0b5b6c7f" },
      "ap-southeast-1" : { "AMI" : "ami-02eb9350" },
      "ap-southeast-2" : { "AMI" : "ami-ab990e91" },
      "ap-northeast-1" : { "AMI" : "ami-14d86d15" },
      "sa-east-1"      : { "AMI" : "ami-0439e619" }
    },

    "AWSInstanceType2Arch" : {
      "t1.micro"    : { "Arch" : "64" },
      "m1.small"    : { "Arch" : "64" },
      "m1.medium"   : { "Arch" : "64" },
      "m1.large"    : { "Arch" : "64" },
      "m1.xlarge"   : { "Arch" : "64" },
      "m2.xlarge"   : { "Arch" : "64" },
      "m2.2xlarge"  : { "Arch" : "64" },
      "m2.4xlarge"  : { "Arch" : "64" },
      "c1.medium"   : { "Arch" : "64" },
      "c1.xlarge"   : { "Arch" : "64" },
      "cc1.4xlarge" : { "Arch" : "64Cluster" },
      "cc2.8xlarge" : { "Arch" : "64Cluster" },
      "cg1.4xlarge" : { "Arch" : "64GPU" }
    },

    "SubnetConfig" : {
      "VPC"     : { "CIDR" : "10.0.0.0/16" },
      "Public"  : { "CIDR" : "10.0.0.0/24" },
      "Private" : { "CIDR" : "10.0.1.0/24" }
    }
  },

  "Resources" : {

    "VPC" : {
      "Type" : "AWS::EC2::VPC",
      "Properties" : {
        "CidrBlock" : { "Fn::FindInMap" : [ "SubnetConfig", "VPC", "CIDR" ]},
        "Tags" : [
          { "Key" : "Application", "Value" : { "Ref" : "AWS::StackName" } },
          { "Key" : "Network", "Value" : "Public" }
        ]
      }
    },

    "PublicSubnet" : {
      "Type" : "AWS::EC2::Subnet",
      "Properties" : {
        "VpcId" : { "Ref" : "VPC" },
        "CidrBlock" : { "Fn::FindInMap" : [ "SubnetConfig", "Public", "CIDR" ]},
        "Tags" : [
          { "Key" : "Application", "Value" : { "Ref" : "AWS::StackName" } },
          { "Key" : "Network", "Value" : "Public" }
        ]
      }
    },

    "InternetGateway" : {
      "Type" : "AWS::EC2::InternetGateway",
      "Properties" : {
        "Tags" : [
          { "Key" : "Application", "Value" : { "Ref" : "AWS::StackName" } },
          { "Key" : "Network", "Value" : "Public" }
        ]
      }
    },

    "GatewayToInternet" : {
       "Type" : "AWS::EC2::VPCGatewayAttachment",
       "Properties" : {
         "VpcId" : { "Ref" : "VPC" },
         "InternetGatewayId" : { "Ref" : "InternetGateway" }
       }
    },

    "PublicRouteTable" : {
      "Type" : "AWS::EC2::RouteTable",
      "Properties" : {
        "VpcId" : { "Ref" : "VPC" },
        "Tags" : [
          { "Key" : "Application", "Value" : { "Ref" : "AWS::StackName" } },
          { "Key" : "Network", "Value" : "Public" }
        ]
      }
    },

    "PublicRoute" : {
      "Type" : "AWS::EC2::Route",
      "Properties" : {
        "RouteTableId" : { "Ref" : "PublicRouteTable" },
        "DestinationCidrBlock" : "0.0.0.0/0",
        "GatewayId" : { "Ref" : "InternetGateway" }
      }
    },

    "PublicSubnetRouteTableAssociation" : {
      "Type" : "AWS::EC2::SubnetRouteTableAssociation",
      "Properties" : {
        "SubnetId" : { "Ref" : "PublicSubnet" },
        "RouteTableId" : { "Ref" : "PublicRouteTable" }
      }
    },

    "PublicNetworkAcl" : {
      "Type" : "AWS::EC2::NetworkAcl",
      "Properties" : {
        "VpcId" : { "Ref" : "VPC" },
        "Tags" : [
          { "Key" : "Application", "Value" : { "Ref" : "AWS::StackName" } },
          { "Key" : "Network", "Value" : "Public" }
        ]
      }
    },

    "InboundHTTPPublicNetworkAclEntry" : {
      "Type" : "AWS::EC2::NetworkAclEntry",
      "Properties" : {
        "NetworkAclId" : { "Ref" : "PublicNetworkAcl" },
        "RuleNumber" : "100",
        "Protocol" : "6",
        "RuleAction" : "allow",
        "Egress" : "false",
        "CidrBlock" : "0.0.0.0/0",
        "PortRange" : { "From" : "80", "To" : "80" }
      }
    },

    "InboundHTTPSPublicNetworkAclEntry" : {
      "Type" : "AWS::EC2::NetworkAclEntry",
      "Properties" : {
        "NetworkAclId" : { "Ref" : "PublicNetworkAcl" },
        "RuleNumber" : "101",
        "Protocol" : "6",
        "RuleAction" : "allow",
        "Egress" : "false",
        "CidrBlock" : "0.0.0.0/0",
        "PortRange" : { "From" : "443", "To" : "443" }
      }
    },

    "InboundSSHPublicNetworkAclEntry" : {
      "Type" : "AWS::EC2::NetworkAclEntry",
      "Properties" : {
        "NetworkAclId" : { "Ref" : "PublicNetworkAcl" },
        "RuleNumber" : "102",
        "Protocol" : "6",
        "RuleAction" : "allow",
        "Egress" : "false",
        "CidrBlock" : "0.0.0.0/0",
        "PortRange" : { "From" : "22", "To" : "22" }
      }
    },

    "InboundEmphemeralPublicNetworkAclEntry" : {
      "Type" : "AWS::EC2::NetworkAclEntry",
      "Properties" : {
        "NetworkAclId" : { "Ref" : "PublicNetworkAcl" },
        "RuleNumber" : "103",
        "Protocol" : "6",
        "RuleAction" : "allow",
        "Egress" : "false",
        "CidrBlock" : "0.0.0.0/0",
        "PortRange" : { "From" : "1024", "To" : "65535" }
      }
    },

    "OutboundPublicNetworkAclEntry" : {
      "Type" : "AWS::EC2::NetworkAclEntry",
      "Properties" : {
        "NetworkAclId" : { "Ref" : "PublicNetworkAcl" },
        "RuleNumber" : "100",
        "Protocol" : "6",
        "RuleAction" : "allow",
        "Egress" : "true",
        "CidrBlock" : "0.0.0.0/0",
        "PortRange" : { "From" : "0", "To" : "65535" }
      }
    },

    "PublicSubnetNetworkAclAssociation" : {
      "Type" : "AWS::EC2::SubnetNetworkAclAssociation",
      "Properties" : {
        "SubnetId" : { "Ref" : "PublicSubnet" },
        "NetworkAclId" : { "Ref" : "PublicNetworkAcl" }
      }
    },

    "PrivateSubnet" : {
      "Type" : "AWS::EC2::Subnet",
      "Properties" : {
        "VpcId" : { "Ref" : "VPC" },
        "CidrBlock" : { "Fn::FindInMap" : [ "SubnetConfig", "Private", "CIDR" ]},
        "Tags" : [
          { "Key" : "Application", "Value" : { "Ref" : "AWS::StackName" } },
          { "Key" : "Name", "Value" : "Private" }
        ]
      }
    },

    "PrivateRouteTable" : {
      "Type" : "AWS::EC2::RouteTable",
      "Properties" : {
        "VpcId" : { "Ref" : "VPC" },
        "Tags" : [
          { "Key" : "Application", "Value" : { "Ref" : "AWS::StackName" } },
          { "Key" : "Network", "Value" : "Private" }
        ]
      }
    },

    "PrivateSubnetRouteTableAssociation" : {
      "Type" : "AWS::EC2::SubnetRouteTableAssociation",
      "Properties" : {
        "SubnetId" : { "Ref" : "PrivateSubnet" },
        "RouteTableId" : { "Ref" : "PrivateRouteTable" }
      }
    },

    "PrivateRoute" : {
      "Type" : "AWS::EC2::Route",
      "Properties" : {
        "RouteTableId" : { "Ref" : "PrivateRouteTable" },
        "DestinationCidrBlock" : "0.0.0.0/0",
        "InstanceId" : { "Ref" : "NATDevice" }
      }
    },

    "PrivateNetworkAcl" : {
      "Type" : "AWS::EC2::NetworkAcl",
      "Properties" : {
        "VpcId" : { "Ref" : "VPC" },
        "Tags" : [
          { "Key" : "Application", "Value" : { "Ref" : "AWS::StackName" } },
          { "Key" : "Network", "Value" : "Private" }
        ]
      }
    },

    "InboundPrivateNetworkAclEntry" : {
      "Type" : "AWS::EC2::NetworkAclEntry",
      "Properties" : {
        "NetworkAclId" : { "Ref" : "PrivateNetworkAcl" },
        "RuleNumber" : "100",
        "Protocol" : "6",
        "RuleAction" : "allow",
        "Egress" : "false",
        "CidrBlock" : "0.0.0.0/0",
        "PortRange" : { "From" : "0", "To" : "65535" }
      }
    },

    "OutBoundPrivateNetworkAclEntry" : {
      "Type" : "AWS::EC2::NetworkAclEntry",
      "Properties" : {
        "NetworkAclId" : { "Ref" : "PrivateNetworkAcl" },
        "RuleNumber" : "100",
        "Protocol" : "6",
        "RuleAction" : "allow",
        "Egress" : "true",
        "CidrBlock" : "0.0.0.0/0",
        "PortRange" : { "From" : "0", "To" : "65535" }
      }
    },

    "PrivateSubnetNetworkAclAssociation" : {
      "Type" : "AWS::EC2::SubnetNetworkAclAssociation",
      "Properties" : {
        "SubnetId" : { "Ref" : "PrivateSubnet" },
        "NetworkAclId" : { "Ref" : "PrivateNetworkAcl" }
      }
    },

    "NATIPAddress" : {
      "Type" : "AWS::EC2::EIP",
      "Properties" : {
        "Domain" : "vpc",
        "InstanceId" : { "Ref" : "NATDevice" }
      }
    },

    "NATDevice" : {
      "Type" : "AWS::EC2::Instance",
      "Properties" : {
        "InstanceType" : { "Ref" : "NATInstanceType" },
        "SubnetId" : { "Ref" : "PublicSubnet" },
        "SourceDestCheck" : "false",
        "ImageId" : { "Fn::FindInMap" : [ "AWSNATAMI", { "Ref" : "AWS::Region" }, "AMI" ]},
        "SecurityGroupIds" : [{ "Ref" : "NATSecurityGroup" }]
      }
    },

    "NATSecurityGroup" : {
      "Type" : "AWS::EC2::SecurityGroup",
      "Properties" : {
        "GroupDescription" : "Enable internal access to the NAT device",
        "VpcId" : { "Ref" : "VPC" },
        "SecurityGroupIngress" : [
           { "IpProtocol" : "tcp", "FromPort" : "80",  "ToPort" : "80",  "SourceSecurityGroupId" : { "Ref" : "OpsWorksSecurityGroup" }} ,
           { "IpProtocol" : "tcp", "FromPort" : "9418",  "ToPort" : "9418",  "SourceSecurityGroupId" : { "Ref" : "OpsWorksSecurityGroup" }} ,
           { "IpProtocol" : "tcp", "FromPort" : "443", "ToPort" : "443", "SourceSecurityGroupId" : { "Ref" : "OpsWorksSecurityGroup" } } ],
        "SecurityGroupEgress" : [
           { "IpProtocol" : "tcp", "FromPort" : "80",  "ToPort" : "80",  "CidrIp" : "0.0.0.0/0" } ,
           { "IpProtocol" : "tcp", "FromPort" : "9418",  "ToPort" : "9418",  "CidrIp" : "0.0.0.0/0" } ,
           { "IpProtocol" : "tcp", "FromPort" : "443", "ToPort" : "443", "CidrIp" : "0.0.0.0/0" } ]
      }
    },


    "OpsWorksSecurityGroup" : {
      "Type" : "AWS::EC2::SecurityGroup",
      "Properties" : {
        "GroupDescription" : "Allow the OpsWorks instances to access the NAT device",
        "VpcId" : { "Ref" : "VPC" },
        "SecurityGroupIngress" : [
           { "IpProtocol" : "tcp", "FromPort" : "80",  "ToPort" : "80",  "SourceSecurityGroupId" : { "Ref" : "LoadBalancerSecurityGroup" }} ]
      }
    },

    "ElasticLoadBalancer" : {
      "Type" : "AWS::ElasticLoadBalancing::LoadBalancer",
      "Properties" : {
        "SecurityGroups" : [ { "Ref" : "LoadBalancerSecurityGroup" } ],
        "Subnets" : [ { "Ref" : "PublicSubnet" } ],
        "Listeners" : [ { "LoadBalancerPort" : "80", "InstancePort" : "80", "Protocol" : "HTTP" } ],
        "HealthCheck" : {
          "Target" : "HTTP:80/",
          "HealthyThreshold" : "3",
          "UnhealthyThreshold" : "5",
          "Interval" : "90",
          "Timeout" : "60"
        }
      }
    },

    "LoadBalancerSecurityGroup" : {
      "Type" : "AWS::EC2::SecurityGroup",
      "Properties" : {
        "GroupDescription" : "Enable HTTP access on port 80",
        "VpcId" : { "Ref" : "VPC" },
        "SecurityGroupIngress" : [ { "IpProtocol" : "tcp", "FromPort" : "80", "ToPort" : "80", "CidrIp" : "0.0.0.0/0" } ],
        "SecurityGroupEgress" : [ { "IpProtocol" : "tcp", "FromPort" : "80", "ToPort" : "80", "CidrIp" : "0.0.0.0/0"} ]
      }
    }







  },

  "Outputs" : {

    "VPC" : {
      "Description" : "VPC",
      "Value" : {"Ref" : "VPC"}
    },

    "PublicSubnets" : {
      "Description" : "Public Subnet",
      "Value" : {"Ref" : "PublicSubnet" }
    },

    "PrivateSubnets" : {
      "Description" : "Private Subnet",
      "Value" : {"Ref" : "PrivateSubnet" }
    },

    "LoadBalancer" : {
      "Description" : "Load Balancer",
      "Value" : {"Ref" : "ElasticLoadBalancer" }
    }
  }
}