Cloud Formation Template errors-CodePudding

I am beginning to learn Cloud Formation Templates and I am running into issues when I validate the template in AWS Cloud Formation -> Create new stack. I am writing the templates using the CloudFormation plugin in Pycharm. These are a couple of the error messages that I get when validating in CloudFormation:

1/10/2022, 5:41:06 PM - Template contains errors.: Template format error: YAML not well-formed. (line 27, column 16)

1/10/2022, 5:40:06 PM - Template contains errors.: Template format error: YAML not well-formed. (line 24, column 12)

Below is my simple code:

AWSTemplateFormatVersion: "2010-09-09"
# Description:
Resources:
  #Create the VPC
  MyCustomVPC:
    Type: AWS::EC2::VPC
    Properties:
      CidrBlock: '10.3.0.0/16'
      EnableDnsHostnames: true
      EnableDnsSupport: true
      Tags:
        - key: Name
          value: !Sub '${AWS::StackName}-application-vpc-acg'
  # Create the Subnets
  PublicSubnetA:
    Type: AWS::EC2::Subnet
    Properties:
      CidrBlock: '10.3.0.0/24'
      MapPublicIpOnLaunch: false
      AvailabilityZone: !Select [ 0, !GetAZs]
      Tags:
        - Key: Name
          Value: !Sub '${AWS::StackName}-public-subnet-A'
      VpcId: !Ref MyCustomVPC


  PublicSubnetB:
    Type: AWS::EC2::Subnet
    Properties:
      CidrBlock: '10.3.1.0/24'
      MapPublicIpOnLaunch: false
      AvailabilityZone: !Select [1, !GetAz]
      Tags:
        - Key: Name
          Value: !Sub '${AWS::StackName}-public-subnet-B'
      VpcId: !Ref MyCustomVPC

  #Create Internet Gateway
  MyInternetGateway:
    Type: AWS::EC2::InternetGateway
    Properties:
      Tags:
        - key: Name
          Value: !Sub '${AWS::StackName}-Internet-Gateway

  #Attach Internet Gateway to VPC
  MyIGWAttachment:
    Type: AWS::EC2::VPCGatewayAttachment
    Properties:
      InternetGatewayId: !Ref MyInternetGateway
      VpcId: !Ref MyCustomVPC

Any help to point me in the right direction is greatly appreciated. Thank you!

CodePudding user response：

There are many issues, such as spelling mistakes, missing parentheses, wrong functions. The correct version is:

AWSTemplateFormatVersion: "2010-09-09"
# Description:
Resources:
  #Create the VPC
  MyCustomVPC:
    Type: AWS::EC2::VPC
    Properties:
      CidrBlock: '10.3.0.0/16'
      EnableDnsHostnames: true
      EnableDnsSupport: true
      Tags:
        - Key: Name
          Value: !Sub '${AWS::StackName}-application-vpc-acg'
  # Create the Subnets
  PublicSubnetA:
    Type: AWS::EC2::Subnet
    Properties:
      CidrBlock: '10.3.0.0/24'
      MapPublicIpOnLaunch: false
      AvailabilityZone: !Select [ 0, !GetAZs ""]
      Tags:
        - Key: Name
          Value: !Sub '${AWS::StackName}-public-subnet-A'
      VpcId: !Ref MyCustomVPC


  PublicSubnetB:
    Type: AWS::EC2::Subnet
    Properties:
      CidrBlock: '10.3.1.0/24'
      MapPublicIpOnLaunch: false
      AvailabilityZone: !Select [1, !GetAZs ""]
      Tags:
        - Key: Name
          Value: !Sub '${AWS::StackName}-public-subnet-B'
      VpcId: !Ref MyCustomVPC

  #Create Internet Gateway
  MyInternetGateway:
    Type: AWS::EC2::InternetGateway
    Properties:
      Tags:
        - Key: Name
          Value: !Sub '${AWS::StackName}-Internet-Gateway'

  #Attach Internet Gateway to VPC
  MyIGWAttachment:
    Type: AWS::EC2::VPCGatewayAttachment
    Properties:
      InternetGatewayId: !Ref MyInternetGateway
      VpcId: !Ref MyCustomVPC