Lab Name: Introduction to Data Engineering - Course 1, Week 3, Assignment 2
Problem Description: I am consistently encountering a timeout error when attempting to run the Apache Benchmark (ab) command against the Application Load Balancer (ALB) endpoint provided in the lab instructions.
Error Message received in CloudShell:
apr_pollset_poll: The timeout specified has expired (70007)
Troubleshooting steps already taken:
Security Groups: Verified that the ALB Security Group has an Inbound Rule allowing traffic on Port 80 (HTTP) and Port 443 (HTTPS) from 0.0.0.0/0.
Target Group Health: Confirmed that the EC2 instances are registered and showing as “Healthy” in the Target Group.
Alternative Tests: Tried running a simple curl -I command against the DNS name, but the request also hangs/times out.
Command Syntax: Verified the URL syntax is correct and includes the trailing slash.
Session Reset: I have tried restarting the lab environment, but the connectivity issue persists.
It appears to be a networking or permissions issue within the AWS Lab Sandbox environment that is preventing Cloud Shell from reaching the ALB. Could you please investigate if there is an issue with the lab backend?posting