Explore your Deployed Infrastructure

Here you will explore the CloudFormation stack you deployed in the previous step.

How many resources were created?

1. From the CloudFormation console, click the Resources tab for the CloudFormationLab stack.
   • The listing shows all the resources that were created.
2. Now, look at the simple_stack.yaml template (in your text editor) and compare. How many resources are defined there?
3. Investigate:
   • Why did the deployment not create all of the resources?
   • You may click below for the answer. Try to figure this out before continuing.

  IGWAttach:
    Condition: PublicEnabled
    #https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-vpc-gateway-attachment.html
    Type: AWS::EC2::VPCGatewayAttachment
    Properties:
      VpcId: !Ref SimpleVPC
      InternetGatewayId: !Ref IGW

Compare the CloudFormation template to the VPC resource that was created

1. Return to the AWS CloudFormation console
2. Click the Resources tab for the CloudFormationLab stack. The listing shows all the resources that were created. In this case just the VPC
3. Note the Logical ID for the VPC is SimpleVPC. Look at the CloudFormation template file and determine where this name came from
4. Under the Resources tab click on the Physical ID link for SimpleVPC
   • This takes you to the VPC console where you can see the VPC you created
   • Select the checkbox next to your VPC (if not already selected)
   • Look at the VPC attributes under the Description tab. How do these compare to the CloudFormation template?

• For more information see the syntax and properties for a VPC in Cloudformation here.