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Lecture-48: What is Auto Scaling Group (ASG) in AWS?

Lecture-48: What is Auto Scaling Group (ASG) in AWS?

April 4, 2024
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Author: Big Y

Auto Scaling Groups in AWS are used to automatically scale your Amazon EC2 instances in response to changes in load.

There are three types of scaling activities:

* **Manual** scaling: You manually add and remove instances from the group.

* **Dynamic** scaling: You specify the desired capacity, and Amazon EC2 Auto Scaling automatically adds and removes instances to maintain that capacity.

* **Scheduled** scaling: You specify a schedule for Amazon EC2 Auto Scaling to add or remove instances.

To create an Auto Scaling group, you must specify the following:

* **Name**

* **VPC**

* **Launch configuration**

* **Min/max/desired capacity**

* **Health check type**

* **Scaling policies**

You can also specify the following optional settings:

* **Instance tags**

* **Notification Configurations**

* **LoadBalancers**

Once you have created an Auto Scaling group, you can use the following commands to manage it:

* **aws autoscaling describe-auto-scaling-groups**

* **aws autoscaling create-auto-scaling-group**

* **aws autoscaling delete-auto-scaling-group**

For more information, see the [AWS Auto Scaling documentation](https://docs.aws.amazon.com/autoscaling/ec2/userguide/).

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