Configure Load Balancer

Introduction

In this section, we will set up a Load Balancer to distribute traffic between EC2 instances. This process is divided into two main parts:

1. Configure AMI and Launch Template

   • Prepare EC2 Instance with Node.js and dependencies
   • Create AMI from configured instance
   • Set up Launch Template with necessary configurations
   • Test and verify template functionality

2. Configure ALB and Target Group

   • Create and configure Application Load Balancer
   • Set up Target Group with health checks
   • Configure listeners for ports (80, 443, 9000)
   • Test and monitor the system

3. Implement Auto Scaling

   • Create Auto Scaling Group using Launch Template
   • Configure scaling policies
   • Set up target tracking scaling policy based on CPU utilization
   • Link with ALB Target Group
   • Verify Auto Scaling operation

     Before starting, ensure:

     • EC2 instance is installed and properly configured with Node.js application
     • Security Groups are created with appropriate rules
     • VPC and Subnets are correctly configured