Tutorial on automatically adding servers based on load in AWS

This CloudFormation template creates a multi-az, load balanced and Auto Scaled sample web site running on an Apache Web Serever. The application is configured to span all Availability Zones in the region and is Auto-Scaled based on the CPU utilization of the web servers. Notifications will be sent to the operator email address on scaling events. The instances are load balanced with a simple health check against the default web page.

WARNING This template creates one or more Amazon EC2 instances and an Application Load Balancer. You will be billed for the AWS resources used if you create a stack from this template.

Steps:

1. Fork this repository by clicking on "Fork".

2. Clone this repository to your local computer by running following:

   $ git clone [email protected]:YOUR-USERNAME/YOUR-REPOSITORY.git

3. Configure AWS CLI in your local machine

4. Run the following command to create the ec2 instance and security group in your AWS account

 aws cloudformation deploy \
  --stack-name my-cloudbasic-autoscaling \
  --template-file AutoScalingMultiAZWithNotifications.template \
  --parameter-overrides KeyName="YOUR-EC2-KEYPAIR" OperatorEMail="YOUR-Email-Address"

Note: Replace "YOUR-EC2-KEYPAIR" & "YOUR-Email-Address" with your EC2 KeyPair name and email respectively.

5. Go to AWS Console > CloudFormation and AWS Console > EC2 to confirm resources were created
6. After the stack is launched, check your email and confirm subscription to the notification

Related Resources:

1. https://s3.amazonaws.com/cloudformation-templates-us-east-1/AutoScalingMultiAZWithNotifications.template
2. https://s3.amazonaws.com/cloudformation-templates-us-east-1/VPC_Single_Instance_In_Subnet.template