Auto Scaling Groups

Once you have defined your launch configuration, create your auto scaling group.  This will present a new form for you to complete.

Aws As Group General

Once you complete the first page, go to "Health Check" page and complete that too.  

Aws As Group Health

There are two types of checks:

  • ELB:  This uses the check that you established when you setup your load balancer.  If an instance behind the ELB fails a check, a scaling event will be triggered.
  • EC2:  This checks the instance themselves.  If EC2 detects something wrong with an instance, a scaling event will be triggered.

If you wish more refined, exact triggering mechanisms, you will need to enable AWS Cloudwatch monitoring and create alarms there.  For more information about Cloudwatch, go HERE .

Once a group has been created, you can manage it by clicking on it in the browser view.

Aws As Manage Group

You will be presented with a details page.  From there, you will be able to add, change or modify all of the elements that comprise the auto scaling group.

Aws As Group Details

Clicking on each tab will present a different view with additional options.

  • Details Tab displays general information about the auto scaling group.
  • Instances Tab presents a list of auto scaling instances associated with the group and allows you to manage those instances. For specifics, go HERE.
  • Metrics Tab presents a list of metrics that auto scaling instances can send to Cloudwatch.  You can enable or disable individual categories. For specific metrics, go HERE .
  • Policies Tab presents a list of scaling polices and allows you to add new policies, and change or delete existing policies. For specifics about policies, go HERE .
  • Scheduled Actions Tab presents a form for creating and scheduling a scaling event.  This is useful for one-time types of situations. For specifics about scheduled actions, go HERE.
  • Scaling Processes Tab presents a list for managing specific auto scaling processes. For more about specific about processes, go HERE.
  • Event Tab presents the auto scaling group's activity and history.
  • Tags Tab allows you to append meaningful names or descriptions to the auto scaling group.