Cloudformation template with VPC and NAT Gateway for the second example from http://rozchmurzeni.pl/vpc---prywatne-podsieci

second.yaml

AWSTemplateFormatVersion: 2010-09-09
Description: >-
    VPC with NAT Gateway for the second example from http://rozchmurzeni.pl/vpc---prywatne-podsieci
Resources:
    Vpc:
        Type: AWS::EC2::VPC
        Properties:
            CidrBlock: 10.0.0.0/16
            EnableDnsHostnames: true
    InternetGateway:
        Type: AWS::EC2::InternetGateway
    InternetGatewayAttachment:
        Type: AWS::EC2::VPCGatewayAttachment
        Properties:
            InternetGatewayId: !Ref InternetGateway
            VpcId: !Ref Vpc
# Publiczny subnet
    PublicRouteTable:
        Type: AWS::EC2::RouteTable
        Properties:
            VpcId: !Ref Vpc
    InternetRoute:
        Type: AWS::EC2::Route
        Properties:
            DestinationCidrBlock: 0.0.0.0/0
            RouteTableId: !Ref PublicRouteTable
            GatewayId: !Ref InternetGateway
    PublicSubnet:
        Type: AWS::EC2::Subnet
        Properties:
            AvailabilityZone: eu-west-1a
            CidrBlock: 10.0.1.0/24
            MapPublicIpOnLaunch: true
            VpcId: !Ref Vpc
    PublicSubnetTableAssociation:
        Type: AWS::EC2::SubnetRouteTableAssociation
        Properties:
            RouteTableId: !Ref PublicRouteTable
            SubnetId: !Ref PublicSubnet
# NAT gateway
    ElasticIpForNat:
        Type: AWS::EC2::EIP
        Properties:
            Domain: vpc
    NatGateway:
        Type: AWS::EC2::NatGateway
        Properties:
            AllocationId: !GetAtt ElasticIpForNat.AllocationId
            SubnetId: !Ref PublicSubnet
# Subnet aplikacji
    ApplicationSubnetRouteTable:
        Type: AWS::EC2::RouteTable
        Properties:
            VpcId: !Ref Vpc
    InternetRoute:
        Type: AWS::EC2::Route
        Properties:
            DestinationCidrBlock: 0.0.0.0/0
            RouteTableId: !Ref ApplicationSubnetRouteTable
            NatGatewayId: !Ref NatGateway
    ApplicationSubnet:
        Type: AWS::EC2::Subnet
        Properties:
            AvailabilityZone: eu-west-1a
            CidrBlock: 10.0.3.0/24
            VpcId: !Ref Vpc
    ApplicationSubnetTableAssociation:
        Type: AWS::EC2::SubnetRouteTableAssociation
        Properties:
            RouteTableId: !Ref ApplicationSubnetRouteTable
            SubnetId: !Ref ApplicationSubnet
# Subnet bazy danych
    DatabaseRouteTable:
        Type: AWS::EC2::RouteTable
        Properties:
            VpcId: !Ref Vpc
    DatabaseSubnet:
        Type: AWS::EC2::Subnet
        Properties:
            AvailabilityZone: eu-west-1a
            CidrBlock: 10.0.4.0/24
            VpcId: !Ref Vpc
    DatabaseSubnetTableAssociation:
        Type: AWS::EC2::SubnetRouteTableAssociation
        Properties:
            RouteTableId: !Ref DatabaseRouteTable
            SubnetId: !Ref DatabaseSubnet