week1.json

{
    "AWSTemplateFormatVersion": "2010-09-09",
    "Description": "Launch 10 EC2 instances and set up an Apache web server within a VPC.",
    "Resources": {
        "VPC": {
            "Type": "AWS::EC2::VPC",
            "Properties": {
                "CidrBlock": "10.0.0.0/16",
                "InstanceTenancy": "default",
                "EnableDnsSupport": true,
                "EnableDnsHostnames": true
            }
        },
        "InternetGateway": {
            "Type": "AWS::EC2::InternetGateway",
            "Properties": {}
        },
        "VPCGatewayAttachment": {
            "Type": "AWS::EC2::VPCGatewayAttachment",
            "Properties": {
                "VpcId": {
                    "Ref": "VPC"
                },
                "InternetGatewayId": {
                    "Ref": "InternetGateway"
                }
            }
        },
        "Subnet": {
            "Type": "AWS::EC2::Subnet",
            "Properties": {
                "VpcId": {
                    "Ref": "VPC"
                },
                "CidrBlock": "10.0.0.0/24"
            }
        },
        "SecurityGroup": {
            "Type": "AWS::EC2::SecurityGroup",
            "Properties": {
                "GroupName": "WebServerSG",
                "GroupDescription": "Security group for web server instances",
                "VpcId": {
                    "Ref": "VPC"
                },
                "SecurityGroupIngress": [
                    {
                        "IpProtocol": "tcp",
                        "FromPort": 80,
                        "ToPort": 80,
                        "CidrIp": "0.0.0.0/0"
                    }
                ]
            }
        },
        "LaunchConfig": {
            "Type": "AWS::AutoScaling::LaunchConfiguration",
            "Properties": {
                "ImageId": "ami-0c55b159cbfafe1f0",
                "InstanceType": "t2.micro",
                "KeyName": "myKeyPair",
                "SecurityGroups": [
                    {
                        "Ref": "SecurityGroup"
                    }
                ],
                "UserData": {
                    "Fn::Base64": {
                        "Fn::Sub": [
                            "#!/bin/bash\nyum update -y\nyum install -y httpd\nservice httpd start\nchkconfig httpd on",
                            {}
                        ]
                    }
                }
            }
        },
        "AutoScalingGroup": {
            "Type": "AWS::AutoScaling::AutoScalingGroup",
            "Properties": {
                "VPCZoneIdentifier": [
                    {
                        "Ref": "Subnet"
                    }
                ],
                "LaunchConfigurationName": {
                    "Ref": "LaunchConfig"
                },
                "MinSize": "10",
                "DBInstance": {
                    "Type": "AWS::RDS::DBInstance",
                    "Properties": {
                        "DBInstanceIdentifier": "myDBInstance",
                        "Engine": "MySQL",
                        "DBName": "myDB",
                        "MasterUsername": "admin",
                        "MasterUserPassword": "adminpassword",
                        "VPCSecurityGroups": [
                            {
                                "Ref": "SecurityGroup"
                            }
                        ],
                        "DBInstanceClass": "db.t2.micro",
                        "AllocatedStorage": "5",
                        "VPCId": {
                            "Ref": "VPC"
                        },
                        "DBSubnetGroupName": {
                            "Ref": "DBSubnetGroup"
                        }
                    }
                },
                "DBSubnetGroup": {
                    "Type": "AWS::RDS::DBSubnetGroup",
                    "Properties": {
                        "DBSubnetGroupName": "myDBSubnetGroup",
                        "DBSubnetIds": [
                            {
                                "Ref": "Subnet"
                            }
                        ],
                        "Description": "My DB Subnet Group"
                    }
                }