{
    "AWSTemplateFormatVersion": "2010-09-09",
    "Description": "Hello World",
    "Parameters": {
        "Prefix": {
            "Type": "String",
            "Description": "Prefix of the domain name.  ie: test -> test-<subdomain>.<domain>.com"
        },

        "Subdomain": {
            "Type": "String",
            "Default": "hello",
            "Description": "Subdomain.  ie: hello -> <prefix>-hello.<domain>.com"
        },

        "HostedZoneName": {
            "Type": "String",
            "Description": "Domain name, ie: doapps.com - nameservers must be pointing to AWS"
        }
    },

    "Resources": {
        "ELB": {
            "Type": "AWS::ElasticLoadBalancing::LoadBalancer",
            "Properties": {
                "ConnectionDrainingPolicy": {
                    "Enabled": true,
                    "Timeout": 5
                },

                "CrossZone": true,
                "AvailabilityZones": [
                    "us-east-1a",
                    "us-east-1b"
                ],

                "HealthCheck": {
                    "HealthyThreshold": "2",
                    "Interval": "30",
                    "Target": "HTTP:81/elb_status.html",
                    "Timeout": "5",
                    "UnhealthyThreshold": "4"
                },

                "Listeners": [
                    {
                        "InstancePort": "80",
                        "LoadBalancerPort": "80",
                        "Protocol": "HTTP",
                        "PolicyNames": [
                            
                        ]
                    }
                ]
            }
        },

        "DNS": {
            "Type": "AWS::Route53::RecordSet",
            "Properties": {
                "Type": "A",
                "HostedZoneName": {
                    "Fn::Join": [
                        "",
                        [
                            {
                                "Ref": "HostedZoneName"
                            },

                            "."
                        ]
                    ]
                },

                "AliasTarget": {
                    "DNSName": {
                        "Fn::GetAtt": [
                            "ELB",
                            "DNSName"
                        ]
                    },

                    "EvaluateTargetHealth": true,
                    "HostedZoneId": {
                        "Fn::GetAtt": [
                            "ELB",
                            "CanonicalHostedZoneNameID"
                        ]
                    }
                },

                "Name": {
                    "Fn::Join": [
                        "-",
                        [
                            {
                                "Ref": "Prefix"
                            },

                            {
                                "Fn::Join": [
                                    ".",
                                    [
                                        {
                                            "Ref": "Subdomain"
                                        },

                                        {
                                            "Ref": "HostedZoneName"
                                        }
                                    ]
                                ]
                            }
                        ]
                    ]
                }
            }
        }
    }
}