AWS CloudFormation LAB

 AWS CloudFormation is a service that allows you to define and provision infrastructure as code. It lets you model and automate the creation and management of AWS resources.

Prerequisites

• An AWS account
• Basic understanding of AWS services

Step-by-Step Guide

1. Create a CloudFormation Template

• Create a Template: Create a text file (e.g., template.yaml) and define your infrastructure resources using the CloudFormation template language (YAML or JSON).

YAML

AWSTemplateFormatVersion: 2010-09-09

Resources:
  MyEC2Instance:
    Type: AWS::EC2::Instance
    Properties:
      ImageId: ami-0c55b159cbfafe1f0
      InstanceType: t2.micro
      KeyName: MyKeyPair   

.

2. Upload Template to S3

• Upload Template: Upload your template file to an S3 bucket.

3. Create a CloudFormation Stack

• Launch CloudFormation: In the AWS Management Console, search for "CloudFormation" and launch the service.
• Create Stack: Click on "Create stack".
• Choose Template: Select the template you uploaded to S3.
• Provide Stack Details: Enter a name for your stack and provide any necessary parameters.
• Create Stack: Click on "Create stack".

CloudFormation Create Stack screen

4. Monitor Stack Creation

• Monitor Stack: The CloudFormation service will create the resources defined in your template. You can monitor the progress in the CloudFormation console.

CloudFormation Stack Events screen

5. Access Created Resources

• Access Resources: Once the stack is created, you can access and manage the created resources using the AWS Management Console or the AWS CLI.

6. Update Stack

• Update Stack: If you need to modify your infrastructure, you can update your template and update the stack.

7. Delete Stack

• Delete Stack: To remove the created resources, delete the stack.

Additional Considerations

• Parameters: Use parameters to make your templates more flexible and reusable.
• Conditions: Use conditions to conditionally create or update resources based on certain conditions.
• Nested Stacks: Create nested stacks to modularize your infrastructure.
• Change Sets: Use change sets to preview the changes before updating a stack.
• Custom Resources: Create custom resources to integrate with custom services or scripts.