AWS: VPC 2AZs sin natgateway

---
AWSTemplateFormatVersion: '2010-09-09'
Description: '2AZs (pub+priv) (based on cloudonaut.io template)'
# Invoke with
# aws cloudformation create-stack --stack-name <name> --template-body https://pastebin.com/raw/<id> --parameters ParameterKey=Owner,ParameterValue=<owner> ParameterKey=ClassB,ParameterValue=10 --profile awslabs
Metadata:
  'AWS::CloudFormation::Interface':
    ParameterGroups:
    - Label:
        default: 'VPC Parameters'
      Parameters:
      - ClassB
Parameters:
  ClassB:
    Description: 'Class B of VPC (10.XXX.0.0/16)'
    Type: Number
    Default: 0
    ConstraintDescription: 'Must be in the range [0-255]'
    MinValue: 0
    MaxValue: 255
  Owner:
    Description: 'Owner of the resources.'
    Type: String

Resources:
  VPC:
    Type: 'AWS::EC2::VPC'
    Properties:
      CidrBlock: !Sub '10.${ClassB}.0.0/16'
      EnableDnsSupport: true
      EnableDnsHostnames: true
      InstanceTenancy: default
      Tags:
      - Key: Name
        Value: !Sub '${Owner}-vpc-${ClassB}'
      - Key: Owner
        Value: !Sub '${Owner}'
  InternetGateway:
    Type: 'AWS::EC2::InternetGateway'
    Properties:
      Tags:
      - Key: Name
        Value: !Sub '${Owner}-igw-${ClassB}'
      - Key: Owner
        Value: !Sub '${Owner}'
  VPCGatewayAttachment:
    Type: 'AWS::EC2::VPCGatewayAttachment'
    Properties:
      VpcId: !Ref VPC
      InternetGatewayId: !Ref InternetGateway
  SubnetAPublic:
    Type: 'AWS::EC2::Subnet'
    Properties:
      AvailabilityZone: !Select [0, !GetAZs '']
      CidrBlock: !Sub '10.${ClassB}.0.0/20'
      MapPublicIpOnLaunch: true
      VpcId: !Ref VPC
      Tags:
      - Key: Name
        Value: !Sub '${Owner}-sub-${ClassB}-A public'
      - Key: Reach
        Value: public
      - Key: Owner
        Value: !Sub '${Owner}'
  SubnetAPrivate:
    Type: 'AWS::EC2::Subnet'
    Properties:
      AvailabilityZone: !Select [0, !GetAZs '']
      CidrBlock: !Sub '10.${ClassB}.16.0/20'
      VpcId: !Ref VPC
      Tags:
      - Key: Name
        Value: !Sub '${Owner}-sub-${ClassB}-A private'
      - Key: Reach
        Value: private
      - Key: Owner
        Value: !Sub '${Owner}'
  SubnetBPublic:
    Type: 'AWS::EC2::Subnet'
    Properties:
      AvailabilityZone: !Select [1, !GetAZs '']
      CidrBlock: !Sub '10.${ClassB}.32.0/20'
      MapPublicIpOnLaunch: true
      VpcId: !Ref VPC
      Tags:
      - Key: Name
        Value: !Sub '${Owner}-sub-${ClassB}-B public'
      - Key: Reach
        Value: public
      - Key: Owner
        Value: !Sub '${Owner}'
  SubnetBPrivate:
    Type: 'AWS::EC2::Subnet'
    Properties:
      AvailabilityZone: !Select [1, !GetAZs '']
      CidrBlock: !Sub '10.${ClassB}.48.0/20'
      VpcId: !Ref VPC
      Tags:
      - Key: Name
        Value: !Sub '${Owner}-sub-${ClassB}-B private'
      - Key: Reach
        Value: private
      - Key: Owner
        Value: !Sub '${Owner}'
  RouteTablePublic:
    Type: 'AWS::EC2::RouteTable'
    Properties:
      VpcId: !Ref VPC
      Tags:
      - Key: Name
        Value: !Sub '${Owner}-rt-${ClassB}-public'
      - Key: Owner
        Value: !Sub '${Owner}'
  RouteTablePrivate:
    Type: 'AWS::EC2::RouteTable'
    Properties:
      VpcId: !Ref VPC
      Tags:
      - Key: Name
        Value: !Sub '${Owner}-rt-${ClassB}-private'
      - Key: Owner
        Value: !Sub '${Owner}'
  RouteTableAssociationAPublic:
    Type: 'AWS::EC2::SubnetRouteTableAssociation'
    Properties:
      SubnetId: !Ref SubnetAPublic
      RouteTableId: !Ref RouteTablePublic
  RouteTableAssociationAPrivate:
    Type: 'AWS::EC2::SubnetRouteTableAssociation'
    Properties:
      SubnetId: !Ref SubnetAPrivate
      RouteTableId: !Ref RouteTablePrivate
  RouteTableAssociationBPublic:
    Type: 'AWS::EC2::SubnetRouteTableAssociation'
    Properties:
      SubnetId: !Ref SubnetBPublic
      RouteTableId: !Ref RouteTablePublic
  RouteTableAssociationBPrivate:
    Type: 'AWS::EC2::SubnetRouteTableAssociation'
    Properties:
      SubnetId: !Ref SubnetBPrivate
      RouteTableId: !Ref RouteTablePrivate
  RouteTablePublicInternetRoute:
    Type: 'AWS::EC2::Route'
    DependsOn: VPCGatewayAttachment
    Properties:
      RouteTableId: !Ref RouteTablePublic
      DestinationCidrBlock: '0.0.0.0/0'
      GatewayId: !Ref InternetGateway




Outputs:
  TemplateID:
    Description: 'cloudonaut.io template id'
    Value: 'vpc/vpc-2azs'
  StackName:
    Description: 'Stack name'
    Value: !Sub '${AWS::StackName}'
  AZs:
    Description: 'AZs'
    Value: 2
    Export:
      Name: !Sub '${AWS::StackName}-AZs'
  AZA:
    Description: 'AZ of A'
    Value: !Select [0, !GetAZs '']
    Export:
      Name: !Sub '${AWS::StackName}-AZA'
  AZB:
    Description: 'AZ of B'
    Value: !Select [1, !GetAZs '']
    Export:
      Name: !Sub '${AWS::StackName}-AZB'
  ClassB:
    Description: 'Class B.'
    Value: !Ref ClassB
    Export:
      Name: !Sub '${AWS::StackName}-ClassB'
  VPC:
    Description: 'VPC.'
    Value: !Ref VPC
    Export:
      Name: !Sub '${AWS::StackName}-VPC'
  SubnetsPublic:
    Description: 'Subnets public.'
    Value: !Join [',', [!Ref SubnetAPublic, !Ref SubnetBPublic]]
    Export:
      Name: !Sub '${AWS::StackName}-SubnetsPublic'
  SubnetsPrivate:
    Description: 'Subnets private.'
    Value: !Join [',', [!Ref SubnetAPrivate, !Ref SubnetBPrivate]]
    Export:
      Name: !Sub '${AWS::StackName}-SubnetsPrivate'
  SubnetAPublic:
    Description: 'Subnet A public.'
    Value: !Ref SubnetAPublic
    Export:
      Name: !Sub '${AWS::StackName}-SubnetAPublic'
  SubnetPrivate:
    Description: 'Subnet A private.'
    Value: !Ref SubnetAPrivate
    Export:
      Name: !Sub '${AWS::StackName}-SubnetAPrivate'
  SubnetBPublic:
    Description: 'Subnet B public.'
    Value: !Ref SubnetBPublic
    Export:
      Name: !Sub '${AWS::StackName}-SubnetBPublic'
  SubnetBPrivate:
    Description: 'Subnet B private.'
    Value: !Ref SubnetBPrivate
    Export:
      Name: !Sub '${AWS::StackName}-SubnetBPrivate'
  RouteTablePrivate:
    Description: 'Route table private (deprecated in v4, will be removed in v5).'
    Value: !Ref RouteTablePrivate
    Export:
      Name: !Sub '${AWS::StackName}-RouteTablePrivate'
  RouteTablePublic:
    Description: 'Route table public (deprecated in v4, will be removed in v5).'
    Value: !Ref RouteTablePublic
    Export:
      Name: !Sub '${AWS::StackName}-RouteTablePublic'