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AWS ELB Connectivity Troubleshooting Scenario

Welcome to this hands-on AWS Learning Activity for troubleshooting EC2 connectivity issues. The goal of this activity is to fix the broken environment and achieve the goal as outlined below. The first video in this activity presents the scenario and the goal, while the second video provides the solution (if needed). Do your best to solve the connectivity issue without viewing the solution video. Goal: Fix the connectivity issue in the AWS environment so that you can view the Linux 2 AMI/Apache test page of the provisioned EC2 instances via the ELB's DNS name. Note/Hint: If your Instances don't show "In-Service" after a bit, try toggling the check type to http then back to tcp port 80. Good luck!

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Path Info

Clock icon Intermediate
Clock icon 30m
Clock icon Apr 22, 2018

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Table of Contents

  1. Challenge

    Issue/Solution Hint #1

    The Issue:

    • The ELB's security group does not allow HTTP traffic

    How to fix the issue:

    • Add an allow rule for HTTP traffic (port 80) to the ELB's security group
  2. Challenge

    Issue/Solution Hint #2

    The Issue:

    • EC2 instance health checks are not passing

    How to fix the issue:

    • Change health check "ping port" on the ELB to port 80

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