AWSTemplateFormatVersion: 2010-09-09
Description: VPC and Subnet definitions for Strapi + ELB project.
Resources:
  PublicVPC:
    Type: AWS::EC2::VPC
    Properties:
      CidrBlock: "172.31.0.0/16"
      EnableDnsHostnames: true
      EnableDnsSupport: true
  PublicSecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupName: !Sub "${AWS::StackName}-PublicSecurityGroup"
      GroupDescription: Security group for the EC2 instances. This group does
        not set any ingress/egress permissions as Elastic Beanstalk will create
        these for us. This group will be attached to our EC2 instances, and the
        RDS instance will permit incoming traffic from this group only.
      VpcId: !Ref PublicVPC
  PublicSubnet0:
    Type: AWS::EC2::Subnet
    Properties:
      AvailabilityZone:
        Fn::Select:
          - 0
          - Fn::GetAZs: !Ref "AWS::Region"
      VpcId: !Ref PublicVPC
      CidrBlock: 172.31.0.0/20
      MapPublicIpOnLaunch: true
  PublicSubnet1:
    Type: AWS::EC2::Subnet
    Properties:
      AvailabilityZone:
        Fn::Select:
          - 1
          - Fn::GetAZs: !Ref "AWS::Region"
      VpcId: !Ref PublicVPC
      CidrBlock: 172.31.16.0/20
      MapPublicIpOnLaunch: true
  PublicSubnet2:
    Type: AWS::EC2::Subnet
    Properties:
      AvailabilityZone:
        Fn::Select:
          - 2
          - Fn::GetAZs: !Ref "AWS::Region"
      VpcId: !Ref PublicVPC
      CidrBlock: 172.31.32.0/20
      MapPublicIpOnLaunch: true
  InternetGateway:
    Type: AWS::EC2::InternetGateway
  InternetGatewayAttachment:
    Type: AWS::EC2::VPCGatewayAttachment
    Properties:
      VpcId: !Ref PublicVPC
      InternetGatewayId: !Ref InternetGateway
  PublicRouteTable:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref PublicVPC
  PublicRoute:
    Type: AWS::EC2::Route
    DependsOn: InternetGatewayAttachment
    Properties:
      RouteTableId: !Ref PublicRouteTable
      DestinationCidrBlock: 0.0.0.0/0
      GatewayId: !Ref InternetGateway
  PublicSubnet0RouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref PublicSubnet0
      RouteTableId: !Ref PublicRouteTable
  PublicSubnet1RouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref PublicSubnet1
      RouteTableId: !Ref PublicRouteTable
  PublicSubnet2RouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref PublicSubnet2
      RouteTableId: !Ref PublicRouteTable
Outputs:
  PublicVPCID:
    Description: The VPC ID.
    Value: !Ref PublicVPC
    Export:
      Name: !Sub "${AWS::StackName}-PublicVPC"
  PublicSecurityGroupId:
    Description: The EC2 security group ID.
    Value: !Ref PublicSecurityGroup
    Export:
      Name: !Sub "${AWS::StackName}-PublicSecurityGroup"
  PublicVPCIDDefaultSecurityGroup:
    Description: The VPC default security group.
    Value: !GetAtt PublicVPC.DefaultSecurityGroup
    Export:
      Name: !Sub "${AWS::StackName}-PublicVPCIDDefaultSecurityGroup"
  PublicSubnet0ID:
    Description: The ID of the subnet.
    Value: !Ref PublicSubnet0
    Export:
      Name: !Sub "${AWS::StackName}-PublicSubnet0"
  PublicSubnet1ID:
    Description: The ID of the subnet.
    Value: !Ref PublicSubnet1
    Export:
      Name: !Sub "${AWS::StackName}-PublicSubnet1"
  PublicSubnet2ID:
    Description: The ID of the subnet.
    Value: !Ref PublicSubnet2
    Export:
      Name: !Sub "${AWS::StackName}-PublicSubnet2"