ALB, Auto Scaling Group & Launch Template
Build a highly available 2-AZ web tier with an Application Load Balancer, Auto Scaling Group, and target-tracking scaling policy on AWS.
Lab Overview
Deploy a production-style two-AZ web tier on AWS using the CLI. You will create a VPC with public subnets, a launch template that boots a web server, an Application Load Balancer, and an Auto Scaling Group with a CPU-based scaling policy. Finally, you will observe load balancing across instances and verify self-healing when an instance is terminated.
You'll learn to:
- Create a launch template with user data that bootstraps a web server
- Deploy an Application Load Balancer spanning two Availability Zones
- Configure a target group with health checks
- Create an Auto Scaling Group with min/max/desired capacity
- Attach a target-tracking scaling policy based on CPU utilization
- Observe ALB traffic distribution and ASG self-healing behavior
Key Resources:
What You'll Learn
Create a launch template with user data for automated instance bootstrapping
Deploy an Application Load Balancer with target groups and health checks
Configure an Auto Scaling Group with target-tracking scaling policies
Verify load balancing and self-healing behavior across Availability Zones
Prerequisites
Basic AWS CLI familiarity
Understanding of VPC and subnets
Technologies Covered
Part of a Course
This lab is part of the AWS Solutions Architect Associate (SAA-C03) course
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