SOA-C02 Question 26
Select 3A company is using Amazon CloudWatch to monitor their application running on multiple EC2 instances across different AWS regions. They want to create a centralized CloudWatch dashboard to monitor key metrics such as CPU utilization, memory usage, and custom application metrics from all instances in a single view. Which of the following steps must be taken to achieve this?
- A
Ensure that all EC2 instances have the CloudWatch agent installed and configured to send memory and custom metrics.
- B
Create a CloudWatch dashboard and add widgets for metrics from each region manually.
- C
Enable detailed monitoring for EC2 instances to capture CPU utilization metrics.
- D
Use AWS Lambda to consolidate metrics from different regions into a single region before adding them to the dashboard.
- E
Use resource tags to group EC2 instances and automatically pull their metrics into the dashboard.
Show answer and explanation
Correct answers: A, B, C
Explanation
To create a centralized CloudWatch dashboard for monitoring metrics from EC2 instances across regions, you need to ensure the required metrics are being collected (e.g., using the CloudWatch agent for memory and custom metrics, and enabling detailed monitoring for CPU metrics). CloudWatch dashboards require manual addition of metrics from each region. AWS Lambda and resource tags are not necessary for this specific use case.
- A. Correct.
Correct: The CloudWatch agent is required to collect memory and custom metrics as they are not captured by default EC2 monitoring.
- B. Correct.
Correct: CloudWatch dashboards do not automatically consolidate metrics across regions. Metrics must be manually added from each region to the dashboard.
- C. Correct.
Correct: Detailed monitoring is required to collect more granular CPU utilization data for EC2 instances.
- D. Incorrect.
Incorrect: AWS Lambda is not required to consolidate metrics across regions for CloudWatch dashboards. Metrics can be added directly from multiple regions without consolidation.
- E. Incorrect.
Incorrect: Resource tags help in organizing resources but do not automatically pull metrics into CloudWatch dashboards.