Application Load Balancer

Create an Application Load Balancer named patientping-alb with a listener that returns a static response.

1. Create the ALB from the console:
   1. In the AWS Console, navigate to EC2, then open Load Balancers under Load Balancing.
   2. Click Create load balancer and choose Application Load Balancer.
   3. Name it patientping-alb.
   4. Set the Scheme to Internet-facing and IP address type to IPv4.
   5. Under Network mapping, select your patientping VPC and choose both public subnets (patientping-public-a and patientping-public-b) in the appropriate availability zones.
   6. Under Security groups, switch to the patientping-external security group.
   7. Under Listeners and routing, keep a single HTTP listener on port 80. For now, set the Default action to Return fixed response, with:
      • Status code: 200
      • Content type: text/plain
      • Response body: Load balancer is working!
   8. All other defaults are fine, scroll to the bottom and click Create load balancer and wait for its state to become active.
2. Grab the "DNS name" from the load balancer's page. Once the ALB is active (no longer "provisioning"), visit it in your browser. You should see the message "Load balancer is working!"

Run and submit the tests to verify your load balancer is configured correctly.