{
    "AWSTemplateFormatVersion": "2010-09-09",
    "Metadata": {
        "AWS::CloudFormation::Designer": {
            "82c136a5-fae5-45cd-97cc-f9edd12a0950": {
                "size": {
                    "width": 60,
                    "height": 60
                },
                "position": {
                    "x": 60,
                    "y": 90
                },
                "z": 1,
                "embeds": []
            },
            "7ddb4173-36ee-4a0d-a300-fcb12f21740e": {
                "size": {
                    "width": 60,
                    "height": 60
                },
                "position": {
                    "x": 180,
                    "y": 90
                },
                "z": 1,
                "embeds": [],
                "isassociatedwith": [
                    "82c136a5-fae5-45cd-97cc-f9edd12a0950"
                ]
            },
            "b3c130e2-d86a-49f5-ba98-09989f93ad7e": {
                "size": {
                    "width": 60,
                    "height": 60
                },
                "position": {
                    "x": 300,
                    "y": 90
                },
                "z": 1,
                "embeds": [],
                "isassociatedwith": [
                    "82c136a5-fae5-45cd-97cc-f9edd12a0950"
                ]
            }
        }
    },
    "Parameters": {
        "myVPC": {
            "Type": "String",
            "Default": "vpc-da58b9b1"
        },
        "mykeyName": {
            "Type": "String",
            "Default": "app123"
        },
        "BuildNumber": {
            "Type": "String",
            "Default": "1",
            "Description": "Number of the build being deployed"
        }
    },
    "Resources": {
        "LaunchConfig": {
            "Type": "AWS::AutoScaling::LaunchConfiguration",
            "Properties": {
                "ImageId": "ami-0986c2ac728528ac2",
                "InstanceType": "t2.micro",
                "KeyName": { "Ref": "mykeyName" },
                "SecurityGroups": [
                    {
                        "Ref": "SecurityGroup"
                    }
                ],
                "BlockDeviceMappings": [
                    {
                        "DeviceName": "/dev/sda1",
                        "Ebs": {
                            "VolumeSize": 20,
                            "VolumeType": "gp2",
                            "DeleteOnTermination": true
                        }
                    }
                ],
                "UserData": {
                    "Fn::Base64": {
                        "Fn::Join": [
                            "",
                            [
                                "Content-Type: multipart/mixed; boundary=\"//\"\n",
                                "MIME-Version: 1.0\n",
                                "\n",
                                "--//\n",
                                "Content-Type: text/x-include-url; charset=\"us-ascii\"\n",
                                "MIME-Version: 1.0 \n",
                                "\n",
                                "#include\n",
                                "https://raw.githubusercontent.com/andy51002000/cloud-formation-example/master/init.sh",
                                "\n",
                                "--//\n",
                                "Content-Type: text/x-shellscript; charset=\"us-ascii\"\n",
                                "MIME-Version: 1.0\n",
                                "\n",
                                "#!/bin/bash\n",
                                "touch /tmp/cloud-init-was-here\n",
                                "touch /tmp/ver-", { "Ref": "BuildNumber" }, "\n",
                                "apt update && apt install -y python-pip\n",
                                "pip install https://s3.amazonaws.com/cloudformation-examples/aws-cfn-bootstrap-latest.tar.gz\n",
                                 "# Signal the status from cfn-init\n",
                                 "/usr/local/bin/cfn-signal -s true",
                                 "         --stack ", { "Ref" : "AWS::StackName" },
                                 "         --resource AutoScalingGroup ",
                                 "         --region ", { "Ref" : "AWS::Region" }, 
                                 "\n",
                                "\n",
                                "--//\n"
                            ]
                        ]
                    }
                }
            },
            "Metadata": {
                "AWS::CloudFormation::Designer": {
                    "id": "b3c130e2-d86a-49f5-ba98-09989f93ad7e"
                }
            }
        },
        "LoadBalancer": {
            "Type": "AWS::ElasticLoadBalancing::LoadBalancer",
            "Properties": {
                "SecurityGroups": [
                    {
                        "Ref": "SecurityGroup"
                    }
                ],
                "Scheme": "internet-facing",
                "Subnets": [
                    "subnet-cf5610b5",
                    "subnet-3346e87f",
                    "subnet-0351596b"
                ],
                "Listeners": [
                    {
                        "InstancePort": "80",
                        "InstanceProtocol": "HTTP",
                        "LoadBalancerPort": "80",
                        "Protocol": "HTTP"
                    },
                    {
                        "InstancePort": "5000",
                        "InstanceProtocol": "HTTP",
                        "LoadBalancerPort": "5000",
                        "Protocol": "HTTP"
                    }
                ],
                "HealthCheck": {
                    "Target": "HTTP:5000/",
                    "Timeout": "5",
                    "Interval": "30",
                    "UnhealthyThreshold": "2",
                    "HealthyThreshold": "2"
                }
            },
            "Metadata": {
                "AWS::CloudFormation::Designer": {
                    "id": "7ddb4173-36ee-4a0d-a300-fcb12f21740e"
                }
            }
        },
        "SecurityGroup": {
            "Type": "AWS::EC2::SecurityGroup",
            "Properties": {
                "GroupDescription": "Allow http to client host",
                "VpcId": {
                    "Ref": "myVPC"
                },
                "SecurityGroupIngress": [
                    {
                        "IpProtocol": "tcp",
                        "FromPort": 80,
                        "ToPort": 80,
                        "CidrIp": "0.0.0.0/0"
                    },
                    {
                        "FromPort": 5000,
                        "IpProtocol": "tcp",
                        "CidrIp": "0.0.0.0/0",
                        "ToPort": 5000
                    },
                    {
                        "FromPort": 22,
                        "IpProtocol": "tcp",
                        "CidrIp": "0.0.0.0/0",
                        "ToPort": 22
                    }
                ],
                "SecurityGroupEgress": [
                    {
                        "IpProtocol": "-1",
                        "CidrIp": "0.0.0.0/0"
                    }
                ]
            },
            "Metadata": {
                "AWS::CloudFormation::Designer": {
                    "id": "82c136a5-fae5-45cd-97cc-f9edd12a0950"
                }
            }
        },
        "AutoScalingGroup": {
            "Type": "AWS::AutoScaling::AutoScalingGroup",
            "Properties": {
                "AvailabilityZones": [
                    "us-east-2a",
                    "us-east-2b",
                    "us-east-2c"
                ],
                "LaunchConfigurationName": {
                    "Ref": "LaunchConfig"
                },
                "MinSize": "1",
                "MaxSize": "4",
                "DesiredCapacity": "1",
                "HealthCheckType": "ELB",
                "HealthCheckGracePeriod": "1800",
                "LoadBalancerNames": [
                    {
                        "Ref": "LoadBalancer"
                    }
                ]
            },
            "UpdatePolicy": {
                "AutoScalingRollingUpdate": {
                    "MinInstancesInService": "1",
                    "MaxBatchSize": "1",
                    "WaitOnResourceSignals": "true",
                    "PauseTime": "PT40M"
                }
            },
            "CreationPolicy": {
                "ResourceSignal": {
                    "Count": "1",
                    "Timeout": "PT40M"
                }
            }
        }
    }
}