A company hosts an application on a single Amazon EC2 instance. The application metadata is kept in Amazon S3 and must be retrieved whenever the instance is restarted. The instance must automatically restart or relaunch if it becomes unresponsive.
Which solution meets these requirements?
A Create an Amazon CloudWatch alarm for the StatusCheckFailed metric. Use the recover action to stop and start the instance. Use an S3 event notification to push the metadata to the instance when the instance is back up and running. B Configure AWS OpsWorks, and use the auto healing feature to stop and start the instance. Use a lifecycle event in OpsWorks to pull the metadata from Amazon S3 and update it on the instance. C Use EC2 Auto Recovery to automatically stop and start the instance in case of a failure. Use an S3 event notification to push the metadata to the instance when the instance is back up and running. D Use AWS CloudFormation to create an EC2 instance that includes the UserData property for the EC2 resource. Add a command in UserData to retrieve the application metadata from Amazon S3. Show Answer Answer Explanation AWS OpsWorks Stacks auto healing detects a failed or unresponsive instance through the OpsWorks agent and automatically heals it. For Amazon EBS-backed instances, the healing process stops and starts the instance. OpsWorks Stacks also runs lifecycle-event recipes during instance lifecycle operations, allowing a recipe to pull the required application metadata from Amazon S3 after recovery.
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