What are some examples of AWS CloudFormation templates?

What are some examples of AWS CloudFormation templates?

AWS CloudFormation templates are JSON or YAML formatted text files that describe the resources needed for your application. Examples include templates for creating EC2 instances, S3 buckets, and VPCs.

Can you show me a simple template for creating an S3 bucket?

Sure! Here's a simple YAML template for creating an S3 bucket:

Resources:
  MyS3Bucket:
    Type: 'AWS::S3::Bucket'
    Properties:
      BucketName: my-example-bucket

How can I add versioning to that S3 bucket?

You can add versioning by including the VersioningConfiguration property in your template:

Resources:
  MyS3Bucket:
    Type: 'AWS::S3::Bucket'
    Properties:
      BucketName: my-example-bucket
      VersioningConfiguration:
        Status: Enabled

What about creating a VPC with subnets?

Here's a basic example of a VPC with two subnets:

Resources:
  MyVPC:
    Type: 'AWS::EC2::VPC'
    Properties:
      CidrBlock: 10.0.0.0/16
  MySubnet1:
    Type: 'AWS::EC2::Subnet'
    Properties:
      VpcId: !Ref MyVPC
      CidrBlock: 10.0.1.0/24
  MySubnet2:
    Type: 'AWS::EC2::Subnet'
    Properties:
      VpcId: !Ref MyVPC
      CidrBlock: 10.0.2.0/24