Debugging an AWS Lambda Function
Question
You've just created an AWS Lambda function.
You're running the function, but the output of the function is not as expected.
You need to check and see what the issue is.
Which of the following can help the developer debug the issue with the Lambda function?
Answers
Explanations
Click on the arrows to vote for the correct answer
A. B. C. D.Answer - A.
The AWS Documentation mentions the following.
AWS Lambda automatically monitors Lambda functions on your behalf, reporting metrics through Amazon CloudWatch.
To help you troubleshoot failures in a function, Lambda logs all requests handled by your function and automatically stores logs generated by your code through Amazon CloudWatch Logs.
Option B is incorrect because VPC Flow Logs is a feature that enables you to capture information about the IP traffic going to and from network interfaces in your VPC.Option C is incorrect because AWS Trusted Advisor is an online tool that provides you real-time guidance to help you provision your resources following AWS best practices.
It cannot be used to debug Lambda functions.
Option D is incorrect because Amazon Inspector is an automated security assessment service that helps improve the security and compliance of applications deployed on AWS.
It is not a troubleshooting tool for the Lambda function.
For more information on monitoring functions, please refer to the below link-
https://docs.aws.amazon.com/lambda/latest/dg/monitoring-functions-logs.htmlThe correct answer to this question is A. Check CloudWatch logs.
AWS Lambda is a serverless compute service that allows developers to run code without having to manage servers. When a Lambda function runs, it generates logs that can help developers troubleshoot issues with their code. CloudWatch is a monitoring service provided by AWS that allows users to collect and track metrics, collect and monitor log files, and set alarms.
By default, Lambda functions write logs to CloudWatch. Developers can use the CloudWatch console to view logs for their Lambda functions. The logs include information such as the execution time of the function, any error messages generated by the function, and any output generated by the function.
To check the logs for a Lambda function, you can do the following:
- Open the AWS Management Console and navigate to the CloudWatch service.
- Click on "Logs" in the left-hand navigation pane.
- Find the log group for your Lambda function, which will be named "/aws/lambda/YourFunctionName".
- Click on the log group to view the logs.
Once you have the logs open, you can search through them to find any error messages or other issues that might be causing the unexpected output from your Lambda function. This can help you debug the issue and make any necessary changes to your code.
Options B, C, and D are not relevant to debugging issues with a Lambda function. VPC Flow Logs are used to capture information about IP traffic going to and from network interfaces in a VPC. AWS Trusted Advisor provides recommendations for optimizing AWS resources and improving security and performance. AWS Inspector is a security assessment service that helps users test and evaluate the security of their applications deployed on AWS. While these services may be useful for other purposes, they are not directly relevant to debugging issues with a Lambda function.
