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Use Application Load Balancers for Web Servers

Load balancing automatically distributes your incoming traffic across multiple targets, such as EC2 instances, containers, and IP addresses, in one or more Availability Zones. In this lab, we configure an Application Load Balancer to distribute network traffic to two EC2 instances. We then enable stickiness, so that once a server is contacted, the user is always sent to that server. This ensures our legacy application continues to work despite not supporting distributed logins. By the end of this lab, the user will understand how to create an Application Load Balancer and enable sticky sessions.

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Path Info

Clock icon Beginner
Clock icon 1h 0m
Clock icon Jun 30, 2021

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Table of Contents

  1. Challenge

    Observe the Provided EC2 Website and Create a Second Server

    Observe the website configured on the existing EC2 server. Using the bootstrap script provided, boot another EC2 server.

  2. Challenge

    Create an Application Load Balancer

    Create a load balancer called LegacyALB with a target group called TargetGroup, add the two EC2 servers as targets, and observe how the load balancing works in your web browser.

  3. Challenge

    Enable Sticky Sessions

    Configure the load balancer to use stickiness, and observe how the load balancer now only directs the user to a single EC2 server (as expected).

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