cloudformation-vpc.json

{
    "AWSTemplateFormatVersion": "2010-09-09",
     "Description": "This template builds VPC",
    "Parameters": {
        "KeyName": { 
            "Description": "This key will be used to SSH to our EC2 instances",
            "Type": "AWS::EC2::KeyPair::KeyName"
        }
    },
    "Resources": {
        "VPC": {
            "Type": "AWS::EC2::VPC",
            "Properties": {
                "CidrBlock": "10.0.0.0/16",
                "EnableDnsSupport": true,
                "EnableDnsHostnames": true
            }
        },
        "PublicSubnet1": {
            "Type": "AWS::EC2::Subnet",
            "Properties": {
                "VpcId": {
                    "Ref": "VPC"
                },
                "CidrBlock": "10.0.1.0/24",
                "MapPublicIpOnLaunch": true
            }
        },
        "PublicSubnet2": {
            "Type": "AWS::EC2::Subnet",
            "Properties": {
                "VpcId": {
                    "Ref": "VPC"
                },
                "CidrBlock": "10.0.2.0/24",
                "MapPublicIpOnLaunch": true
            }
        },
        "InternetGateway": {
            "Type": "AWS::EC2::InternetGateway"
        },
        "VPCGatewayAttachment": {
            "Type": "AWS::EC2::VPCGatewayAttachment",
            "Properties": {
                "VpcId": {
                    "Ref": "VPC"
                },
                "InternetGatewayId": {
                    "Ref": "InternetGateway"
                }
            }
        },
        "RouteTable": {
            "Type": "AWS::EC2::RouteTable",
            "Properties": {
                "VpcId": {
                    "Ref": "VPC"
                }
            }
        },
        "Route": {
            "Type": "AWS::EC2::Route",
            "DependsOn": "VPCGatewayAttachment",
            "Properties": {
                "RouteTableId": {
                    "Ref": "RouteTable"
                },
                "DestinationCidrBlock": "0.0.0.0/0",
                "GatewayId": {
                    "Ref": "InternetGateway"
                }
            }
        },
        "PublicSubnetRouteTableAssociation1": {
            "Type": "AWS::EC2::SubnetRouteTableAssociation",
            "Properties": {
                "SubnetId": {
                    "Ref": "PublicSubnet1"
                },
                "RouteTableId": {
                    "Ref": "RouteTable"
                }
            }
        },
        "SecurityGroup": {
            "Type": "AWS::EC2::SecurityGroup",
            "Properties": {
                "GroupDescription": "Security Group for Public Subnets",
                "VpcId": {
                    "Ref": "VPC"
                },
                "SecurityGroupIngress": [
                    {
                        "IpProtocol": "tcp",
                        "FromPort": 22,
                        "ToPort": 22,
                        "CidrIp": "0.0.0.0/0"

                    }]
            }
        }
    } 
}