CloudFormation Change Sets and Drift Detection
Deploy a CloudFormation stack, preview a change with a change set, execute it, then intentionally drift a resource out-of-band and detect it with drift detection.
Lab Overview
Change sets let you preview what CloudFormation will modify before it touches your live stack. Drift detection tells you when someone (or something) has changed a resource outside CloudFormation. Together they form the control plane for governed infrastructure updates.
In this lab you will:
- Author a CloudFormation template with an S3 bucket and an SQS queue, and deploy it as a stack
- Modify the template and create a change set to preview every resource-level change
- Execute the change set and verify the stack updates correctly
- Deliberately modify an S3 bucket tag outside CloudFormation, then run drift detection to find it
- Explore remediation options and clean up
What You'll Learn
Author a CloudFormation template and deploy it as a stack
Create and inspect a change set to preview resource-level modifications
Execute a change set and verify the stack update via stack events
Detect out-of-band resource changes with drift detection
Understand drift remediation approaches and clean up the stack
Prerequisites
aws-cli-baseline-complete
basic-cloudformation-familiarity
Technologies Covered
Part of a Course
This lab is part of the AWS Certified DevOps Engineer - Professional (DOP-C02) course
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