Lab
A Cloud Guru

Building and Troubleshooting a Serverless Web Application

In this hands-on lab, we are going to build and troubleshoot a serverless web application using the following technologies: * DynamoDB * Lambda * API Gateway * S3 * X-Ray

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Path Info

Level

Intermediate

Duration

30m

Published

Jun 17, 2022

Challenge

Create a DynamoDB Table
1. Create the DynamoDB table and populate it using the file named items.json. All files required for this hands-on lab are located in the folder named Building_and_Troubleshooting_a_Serverless_Web_Application that you will find in the following GitHub repository.
Challenge

Create a Lambda Function with an API Gateway Endpoint
1. Create a Lambda function usinglambda_function.py.
2. Configure the Lambda to use Python 3.9 and 256 MB.
3. Test the function to see if it works.
4. Diagnose and fix an error with the function configuration.
5. Add an API gateway endpoint to your function; make sure you select a REST API.
6. Test that the API gateway can be used to invoke your Lambda function.
Challenge

Create an S3 Bucket and Upload the Website Files
1. Modify index.html to add the invoke URL of your API Gateway endpoint.
2. Create an S3 bucket with public access enabled.
3. Upload the following website files to your bucket. Make sure they have public-read enabled: index.html, error.html, and cookie.html
4. Configure S3 static website hosting on your S3 bucket.
5. Check you can access everything from the S3 website-hosting URL.
Challenge

Configure X-Ray
1. Enable tracing from within the Lambda function.
2. Enable the API gateway endpoint to send traces.
3. Add the Lambda Layer to your function using the file named layer.zip Make sure to use Python 3.9.
4. Update your Lambda function code to import the X-Ray SDK to your function using the snippet provided named lambda_function_xray.py.
5. Test the function to see if it works.
6. Diagnose and fix an error with the function configuration.
Challenge

Review The X-Ray Service Map
1. Generate some traffic to your website.
2. Review the X-Ray service map and traces.
3. Break the application and see the results displayed in X-Ray.

Author

A Cloud Guru

The Cloud Content team comprises subject matter experts hyper focused on services offered by the leading cloud vendors (AWS, GCP, and Azure), as well as cloud-related technologies such as Linux and DevOps. The team is thrilled to share their knowledge to help you build modern tech solutions from the ground up, secure and optimize your environments, and so much more!

What's a lab?

Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.