Question:

A company hosts an application that uses several Amazon EC2 instances in an Auto Scaling group behind an Application Load Balancer (ALB). During the initial startup of the EC2 instances, the EC2 instances run user data scripts to download critical content for the application from an Amazon S3 bucket.

The EC2 instances are launching correctly. However, after a period of time, the EC2 instances are terminated with the following error message:

“An instance was taken out of service in response to an ELB system health check failure.”

The only recent change to the deployment is that the company added a large amount of critical content to the S3 bucket.

What should a solutions architect do so that the production environment can deploy successfully?