ALB + Auto Scaling + NGINX Project

Overview

High-Availability Web App with AWS ALB & Auto Scaling – Demonstrates scalable, load-balanced infrastructure using EC2, ALB, and ASG.

ALB Distributes traffic and provides health checks Auto Scaling Group Automatically adds/removes EC2 instances based on load EC2 (Amazon Linux 2 + NGINX) Hosts the web app

• Application Load Balancer (ALB)
• Auto Scaling Group (ASG)
• NGINX on Amazon Linux 2
• Default VPC

The setup ensures high availability and automatic scaling. Auto Scaling configured to maintain 2–4 instances; scales out based on healthy target count or traffic increase.

Steps Performed

1. Create launch template with userdata to install NGINX
2. Create target group for ALB health checks
3. Set up Auto Scaling Group
4. Verify instances healthy under ALB

Screenshots

• Auto Scaling Group Overview: https://github.com/paco357-coder/alb-autoscaling-project/blob/main/autoscaling%20group.png • Target Group Healthy Status: https://github.com/paco357-coder/alb-autoscaling-project/blob/main/target%20group%20healthy.png • Launch Template Creation Details: https://github.com/paco357-coder/alb-autoscaling-project/blob/main/launch%20template.png

Notes

• All resources are in the default VPC.
• Instances automatically receive public IPv4 addresses.
• NGINX is installed and enabled at launch.
• This setup can scale automatically and supports high availability.
• Security group allows HTTP (80) and SSH (22)
• All public instances receive IPv4 addresses
• Could be improved by placing instances in private subnets with a NAT gateway