Use input parameters to be able to re-use CloudFormation templates-

1. Create a CloudFormation template accepting input parameters and using them to configure an EC2 instance.
2. Create a CloudFormation stack based on your template.

1. Open stub.yaml with an editor of your choice. The stub file contains a skeleton to start from.
2. Add a parameter called AMI of type String to the Parameters section (see Parameters section).
3. Add a parameter called InstanceType of type String to the Parameters section (see Parameters section).
4. Add a parameter called Subnet of type AWS::EC2::Subnet::Id to the Parameters section (see Parameters section).

1. Open CloudFormation in AWS Management Console.
2. Click Create Stack button.
3. Select Upload a template to Amazon S3.
4. Choose the template file you created for this lab.
5. Click Next button.
6. Insert lab2-$usernameas stack name. Replace $usernamewith your username (e.g. lab2-awittig).
7. Select a random subnet as parameter for Subnet.
8. Insert t2.micro as parameter for InstanceType.
9. Insert ami-bff32ccc (eu-west-1) or ami-bc5b48d0(eu-central-1) as parameter for AMI.
10. Click Next button.
11. Skip next step by clicking on Next button.
12. Review your input and click Create button.
13. Wait until your stack reaches status CREATE_COMPLETE.
14. Select your stack by clicking on row of the table.
15. Select Delete Stack from the Actions menu.
16. Confirm the deletion of your stack.
17. Congratulations! You are done with the lab!

• Template anatomy
• Resource Type: EC2 instance

This lab includes a sample solution sample-solution.yaml. Use it if you are stuck during the creation of your template of if you want to review your results.