vpc_v5.yaml

Description:
  This template creates one VPC and two subnets. Each subnet belongs to one AvailabilityZone. (v1)
  It also creates an InternetGateway and attaches is to the VPC. (v2)
  Also creates a route table, than a route (0.0.0.0/0) pointing at the InternetGateway. In the end associates the subnets to the route table (v3)
  Adding an Instance in the first subnet. Creating a SG allowing SSH from 0/0. Assign SG to previous Instance (v4)
  Adding UserData and changing ROOT Volume /dev/xvda (v5)
  
Parameters:
  VpcCidrBlock:
    Type: String
    Default: "10.100.0.0/16"
    Description: "Input the VPC CIDR Block"

  Subnet1CidrBlock:
    Type: String
    Default: "10.100.1.0/24"
    Description: "Subnet 1 CIDR Block"

  Subnet2CidrBlock:
    Type: String
    Default: "10.100.2.0/24"
    Description: "Subnet 2 CIDR Block"

Resources:
  GabiVPC:
    Type: "AWS::EC2::VPC"
    Properties:
      CidrBlock: !Ref VpcCidrBlock

  MyInternetGateway:
    Type: "AWS::EC2::InternetGateway"
    # Create the InternetGateway

  IntGw2VPCconnection:
    Type: "AWS::EC2::VPCGatewayAttachment"
    Properties:
      InternetGatewayId: !Ref MyInternetGateway
      VpcId: !Ref GabiVPC
      # Connect the VPC and the InternetGateway

  Subnet1:
    Type: "AWS::EC2::Subnet"
    Properties:
      VpcId: !Ref GabiVPC
      CidrBlock: !Ref Subnet1CidrBlock
      MapPublicIpOnLaunch: True
      AvailabilityZone: !Select [0, !GetAZs ]
#        Fn::Select:
#          - 0
#          - Fn::GetAZs: ""

  Subnet2:
    Type: "AWS::EC2::Subnet"
    Properties:
      VpcId: !Ref GabiVPC
      CidrBlock: !Ref Subnet2CidrBlock
      MapPublicIpOnLaunch: True
      AvailabilityZone: !Select [1, !GetAZs ]

  MyRouteTable:
    Type: "AWS::EC2::RouteTable"
    Properties:
      VpcId: !Ref GabiVPC

  MyDefaultRoute:
    Type: "AWS::EC2::Route"
    Properties:
      DestinationCidrBlock: "0.0.0.0/0"
      GatewayId: !Ref MyInternetGateway
      RouteTableId: !Ref MyRouteTable

  Subnet1RouteTblAssoc:
    Type: "AWS::EC2::SubnetRouteTableAssociation"
    Properties:
      RouteTableId: !Ref MyRouteTable
      SubnetId: !Ref Subnet1

  Subnet2RouteTblAssoc:
    Type: "AWS::EC2::SubnetRouteTableAssociation"
    Properties:
      RouteTableId: !Ref MyRouteTable
      SubnetId: !Ref Subnet2

  Instance01SG:
    Type: "AWS::EC2::SecurityGroup"
    Properties:
      GroupDescription: "Allows SSH from everywhere"
      VpcId: !Ref GabiVPC
      SecurityGroupIngress:
        - IpProtocol: "tcp"
          CidrIp: "0.0.0.0/0"
          FromPort: 22
          ToPort: 22

  Instance01:
    Type: "AWS::EC2::Instance"
    Properties:
      AvailabilityZone: !Select [ 0, !GetAZs ]
      SubnetId: !Ref Subnet1
      ImageId: "ami-a4c7edb2"
      InstanceType: "t2.micro"
      KeyName: "gabi-nvirginia"
      SecurityGroupIds:
        - !Ref Instance01SG
      UserData:
        Fn::Base64: |
          #!/bin/bash
          /bin/echo "dadada" > /gabi
      BlockDeviceMappings:
        - DeviceName: "/dev/xvda"
          Ebs:
            VolumeType: "gp2"
            VolumeSize: "20"