Troubleshooting Website Reachability behind a Load Balancer

The lab demonstrates the concept of configuring a webserver behind an Elastic Load Balancer (ELB).

Objectives

By the end of this lab, you will be able to do the following:

• Examine the current configuration of the Application Load Balancer (ALB) and the website running on EC2 instances behind the ALB.
• Troubleshoot and identify the issues in the existing configuration which are preventing users from accessing the website.
• Remediate the configuration to allow users to access the website behind the ALB and ensure the solution is highly available.

Prerequisites

To successfully complete this lab, you should have a basic knowledge of:

• Navigating through the AWS Management Console.
• Elastic Load Balancer (ELB).
• Amazon Virtual Private Cloud (Amazon VPC).
• Amazon Elastic Compute Cloud (Amazon EC2).

Audience

Systems Operations Engineers
Systems Operations Administrators

Course outline

Task 1: Testing the web server reachability from the internet
Task 2: Troubleshooting and remediating website reachability issues
Task 3: Ensuring the solution is highly available