DOP-C02 Question 204
Select 3You are managing a distributed application running on AWS that uses multiple EC2 instances, an RDS database, and an S3 bucket. Your team has reported intermittent performance issues and wants to identify the root cause. The solution should provide detailed insights into request latency, errors, and resource utilization across all components of the application. Which combination of monitoring and logging services should you use to effectively address this requirement?
- A
Amazon CloudWatch Metrics to monitor resource utilization and set up alarms for EC2 instances and RDS
- B
AWS X-Ray to trace requests through the application and identify latency bottlenecks
- C
Amazon CloudTrail to capture API call logs for your application
- D
Amazon S3 Event Notifications to monitor changes in S3 buckets
- E
Amazon CloudWatch Logs to centralize and analyze application logs from EC2 instances
Show answer and explanation
Correct answers: A, B, E
Explanation
To troubleshoot intermittent performance issues in a distributed application, you need a combination of services that provide resource utilization metrics, request traceability, and centralized log analysis. Amazon CloudWatch Metrics helps monitor the health of infrastructure components. AWS X-Ray traces requests across the application to identify latency or errors in specific components. Amazon CloudWatch Logs centralizes and analyzes logs, making it easier to detect patterns or issues. Together, these services provide a comprehensive view of your application's performance and help identify the root cause of issues.
- A. Correct.
Correct. Amazon CloudWatch Metrics is ideal for monitoring resource utilization (e.g., CPU, memory, disk) and setting alarms to notify you of unusual behavior in EC2 and RDS instances.
- B. Correct.
Correct. AWS X-Ray helps trace requests through the application, allowing you to visualize the latency of individual components and identify bottlenecks or errors.
- C. Incorrect.
Incorrect. While Amazon CloudTrail logs API calls, it does not provide detailed insights into resource utilization or request latency. It is more suited for security and compliance use cases.
- D. Incorrect.
Incorrect. Amazon S3 Event Notifications are useful for triggering workflows based on changes in S3, but they are not designed for application-wide monitoring or performance troubleshooting.
- E. Correct.
Correct. Amazon CloudWatch Logs centralizes and aggregates logs from EC2 instances, making it easier to analyze application-level errors and performance issues.