Exam AWS-SysOps topic 1 question 829 discussion

D You first need to figure out what was changed. Use Cloudformation drift for that. Then update your Cloudformation template, and use a changeset to roll it out. Assuming 'redeploy the stack' would mean using a changeset.

I was confused with topic2 question14. as question14, I picked this questions answer to B. I want to know diffrences between *change set* and *drift detection* https://stackoverflow.com/questions/60910525/what-is-the-difference-cloudformation-drift-and-change-sets import thing was *manual changes*. if there is no manual changes, the answer is B. but this question has manual changes, and answer is D indeed.

Option B (updating the CloudFormation stack using a change set) is the appropriate approach when you want to capture all the changes made to the infrastructure in a controlled and automated manner. A change set provides a summary of proposed changes to the CloudFormation stack, including additions, modifications, and deletions of resources based on an updated template. You can review and validate the changes before applying them to the stack, ensuring a controlled and accurate update process.

D is the answer

D is the answer

D. Use drift detection on the CloudFormation stack. Use the output to update the CloudFormation template and redeploy the stack. Seem correct

I'll go with D

The question is vague: it says the administrator must (1) determine what has changed and (2) update the template. Then it asks "which solution will ensure all the changes are captured" - So is that (1) AND (2), or only (2)? Not A because deleting the old stack will delete the resources. Not C because it would be a coincidence, sheer luck, if the changes are identical to those arising from a change of parameters. I thought it could be B because the question asks "which solution will ensure all the changes are captured". If the administrator had determined the changes, then simply updating the stack and getting it reviewed via a change set would not be good practice. But the answer is D because there is a feature called "drift detection" specifically for this purpose. I thought it was a trick answer because the name sounds casual. But it's actually correct.

D. You can use drift detection to identify stack resources to which configuration changes have been made outside of CloudFormation management. You can then take corrective action so that your stack resources are again in sync with their definitions in the stack template, such as updating the drifted resources directly so that they agree with their template definition. Resolving drift helps to ensure configuration consistency and successful stack operations.

D. Use drift detection on the CloudFormation stack. Use the output to update the CloudFormation template and redeploy the stack. https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-stack-drift.html