{
    "AWSTemplateFormatVersion": "2010-09-09",
    "Description": "",
    "Metadata": {},
    "Parameters": {
        "WSFCNodeInstanceType": {
            "AllowedValues": [
                "r4.xlarge",
                "r4.2xlarge",
                "r4.4xlarge",
                "r4.4xlarge",
                "r5.large",
                "r5.xlarge",
                "r5.2xlarge",
                "r5.4xlarge",
                "r5.12xlarge"
            ],
            "ConstraintDescription": "Only EBS Optimized instance types r4.xlarge, r4.2xlarge, r4.4xlarge, r4.8xlarge allowed",
            "Default": "r5.2xlarge",
            "Description": "Amazon EC2 instance type for the WSFC Nodes",
            "Type": "String"
        },
        "AutoPlacement": {
            "Description": "Does host allow auto-placement (dedicated) or only allow placement by specifying hostid (host) ",
            "Type": "String",
            "AllowedValues": [
                "on",
                "off"
            ],
            "Default": "on"
        },
        "AvailabilityZones": {
            "Description": "List of Availability Zones to use for the subnets in the VPC. Note: The logical order is preserved and that 2 AZ's must be provided unless the Third AZ parameter is specified, in which case 3 AZ's must me provided.",
            "Type": "List<AWS::EC2::AvailabilityZone::Name>"
        },
        "3rdAZ": {
            "Description": "create a host in a 3rd AZ",
            "Type": "String",
            "Default": "no",
            "AllowedValues": [
                "no",
                "yes"
            ]
        }
    },
    "Mappings": {},
    "Conditions": {
        "Create3rdHost": {
            "Fn::Equals": [
                {
                    "Ref": "3rdAZ"
                },
                "yes"
            ]
        }
    },
    "Resources": {
        "DedicatedHost1": {
            "Type": "AWS::EC2::Host",
            "Properties": {
                "AutoPlacement": {
                    "Ref": "AutoPlacement"
                },
                "AvailabilityZone": {
                    "Fn::Select": [
                        0,
                        {
                            "Ref": "AvailabilityZones"
                        }
                    ]
                },
                "InstanceType": {
                    "Ref": "WSFCNodeInstanceType"
                }
            }
        },
        "DedicatedHost2": {
            "Type": "AWS::EC2::Host",
            "Properties": {
                "AutoPlacement": {
                    "Ref": "AutoPlacement"
                },
                "AvailabilityZone": {
                    "Fn::Select": [
                        1,
                        {
                            "Ref": "AvailabilityZones"
                        }
                    ]
                },
                "InstanceType": {
                    "Ref": "WSFCNodeInstanceType"
                }
            }
        },
        "DedicatedHost3": {
            "Type": "AWS::EC2::Host",
            "Condition": "Create3rdHost",
            "Properties": {
                "AutoPlacement": {
                    "Ref": "AutoPlacement"
                },
                "AvailabilityZone": {
                    "Fn::Select": [
                        2,
                        {
                            "Ref": "AvailabilityZones"
                        }
                    ]
                },
                "InstanceType": {
                    "Ref": "WSFCNodeInstanceType"
                }
            }
        }
    },
    "Outputs": {
        "DedicatedHost1": {
            "Value": {
                "Ref": "DedicatedHost1"
            }
        },
        "DedicatedHost2": {
            "Value": {
                "Ref": "DedicatedHost2"
            }
        },
        "DedicatedHost3": {
            "Value": {
                "Ref": "DedicatedHost3"
            },
            "Condition": "Create3rdHost"
        }
    }
}