Your company has a set of Linux-based EC2 Instances. You need to generate reports on the memory usage for these sets of Instances. These dashboards need to be viewed by the Linux Administrators team continuously. Which of the following steps would you need to implement for this requirement?

Answer options:

A.Ensure that the EC2 Instance Config tool is installed on the Linux instance.
B.Ensure that the CloudWatch agent is installed on the Linux Instances.
C.Use CloudTrail logs for logging all the metrics.
D.Use EC2 console to get the details.

Correct Answer: B
The AWS Documentation mentions the following.
A new multi-platform CloudWatch agent is available. You can use a single agent to collect both system metrics and log files from Amazon EC2 instances and on-premises servers. The new agent supports both Windows Server and Linux and enables you to select the metrics to be collected, including sub-resource metrics such as per-CPU core. We recommend using the new agent instead of the older monitoring scripts to collect metrics and logs.
Option A is invalid because this is used for Windows-based instances.
Option C is invalid because this is used for API monitoring.
Option D is wrong. There is no option available for this.
For more information on using monitoring scripts for your Linux based instances, please refer to the below URL-
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/mon-scripts.html