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Zorluk: OrtaAWS Compute Optimizer and Right-Sizing

A company runs a memory-bound microservices application on Amazon EC2 instances. A SysOps Administrator notices that AWS Compute Optimizer is generating resource recommendations based only on CPU and network metrics, without factoring in memory utilization. Which of the following actions must the administrator take to ensure AWS Compute Optimizer includes memory metrics in its recommendations? (Select TWO.)

  1. Configure the unified CloudWatch agent on the EC2 instances to publish memory utilization metrics to the default CWAgent namespace.Cevap
  2. Attach an IAM role to the EC2 instances that includes the CloudWatchAgentServerPolicy managed policy.Cevap
  3. C
    Enable CloudWatch detailed monitoring on the EC2 instances to decrease the metric collection interval to 1 minute.
  4. D
    Configure an AWS Budget with a custom optimization alert based on EC2 memory usage.
  5. E
    Create a VPC Gateway Endpoint for CloudWatch and associate it with the subnet route tables to allow the instances to send memory metrics.

Cevap

Configure the unified CloudWatch agent on the EC2 instances to publish memory utilization metrics to the default CWAgent namespace, and attach an IAM role to the EC2 instances that includes the CloudWatchAgentServerPolicy managed policy.
To include memory metrics in AWS Compute Optimizer recommendations, the unified CloudWatch agent must be installed on the EC2 instances to capture OS-level memory utilization and publish it to the CWAgent namespace. Additionally, the EC2 instances must be authorized to write these metrics to CloudWatch, which requires attaching an IAM role with the CloudWatchAgentServerPolicy policy.

Adım Adım Çözüm

1
Configure metric collection at the OS level.
The unified CloudWatch agent is installed and configured to send OS-level memory metrics (such as mem_used_percent) to the CWAgent namespace in CloudWatch.
By default, EC2 only reports hypervisor-level metrics like CPU and disk I/O. Memory is an OS-level metric that requires an agent to collect.
2
Grant the instances permission to write metrics.
An IAM role containing the CloudWatchAgentServerPolicy managed policy is attached to the EC2 instances.
The CloudWatch agent requires permissions to call the PutMetricData API to send metrics to CloudWatch.
3
Ensure Compute Optimizer reads the metrics.
Compute Optimizer detects the memory metrics under the CWAgent namespace and begins factoring them into recommendations.
Compute Optimizer is pre-configured to look for memory metrics specifically under the CWAgent namespace.

Anahtar Kavram

AWS Compute Optimizer memory metric requirements
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AWS Compute Optimizer and Right-Sizing

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