What is the MOST efficient way to accomplish this goal?
Deploy the solution to memory-optimized EC2 instances, and use the CloudWatch MemoryUtilization metric
Enable the Memory Monitoring option by using AWS Config
Install the AWS Systems Manager agent on the applicable EC2 instances to monitor memory
Monitor memory by using a script within the instance, and send it to CloudWatch as a custom metric
Explanations:
Amazon EC2 instances do not natively provide theMemoryUtilizationmetric in CloudWatch unless specifically configured, so simply using memory-optimized instances won’t automatically provide this metric.
AWS Config tracks configuration changes of AWS resources, but it does not monitor memory usage on EC2 instances. This option is not suitable for tracking memory utilization.
Installing the AWS Systems Manager (SSM) agent on EC2 instances enables other management tasks, but it does not directly provide memory usage metrics for CloudWatch unless combined with additional configurations.
The most efficient way to monitor memory usage is to create a custom script within the EC2 instance that tracks memory and sends the data to CloudWatch as a custom metric. This method provides flexibility and accurate memory usage data.
I compute that the answer is:
Monitor memory by using a script within the instance, and send it to CloudWatch as a custom metric