terraform/website/source/docs/providers/aws/r/autoscale.html.markdown

---
layout: "aws"
page_title: "AWS: aws_autoscaling_group"
sidebar_current: "docs-aws-resource-autoscale"
description: |-
  Provides an AutoScaling Group resource.
---

# aws\_autoscaling\_group

Provides an AutoScaling Group resource.

## Example Usage

```
resource "aws_autoscaling_group" "bar" {
  availability_zones = ["us-east-1a"]
  name = "foobar3-terraform-test"
  max_size = 5
  min_size = 2
  health_check_grace_period = 300
  health_check_type = "ELB"
  desired_capacity = 4
  force_delete = true
  launch_configuration = "${aws_launch_configuration.foobar.name}"

  tag {
    key = "foo"
    value = "bar"
    propagate_at_launch = true
  }
  tag {
    key = "lorem"
    value = "ipsum"
    propagate_at_launch = false
  }
}
```

## Argument Reference

The following arguments are supported:

* `name` - (Required) The name of the auto scale group.
* `max_size` - (Required) The maximum size of the auto scale group.
* `min_size` - (Required) The minimum size of the auto scale group. Terraform
  waits after ASG creation for this number of healthy instances to show up in
  the ASG before continuing. Currently, it will wait for a maxiumum of 10m, if
  ASG creation is taking more than a few minutes, it's worth investigating for
  scaling actvity errors caused by problems with the selected Launch
  Configuration.
* `availability_zones` - (Required) A list of AZs to launch resources in.
* `launch_configuration` - (Required) The ID of the launch configuration to use.
* `health_check_grace_period` - (Optional) Time after instance comes into service before checking health.
* `health_check_type` - (Optional) "EC2" or "ELB". Controls how health checking is done.
* `desired_capacity` - (Optional) The number of Amazon EC2 instances that
  should be running in the group. (If this is specified, Terraform will wait for
  this number of healthy instances after ASG creation instead of `min_size`.)
* `force_delete` - (Optional) Allows deleting the autoscaling group without waiting
   for all instances in the pool to terminate.
* `load_balancers` (Optional) A list of load balancer names to add to the autoscaling
   group names.
* `vpc_zone_identifier` (Optional) A list of subnet IDs to launch resources in.
* `termination_policies` (Optional) A list of policies to decide how the instances in the auto scale group should be terminated.
* `tag` (Optional) A list of tag blocks. Tags documented below.

Tags support the following:

* `key` - (Required) Key
* `value` - (Required) Value
* `propagate_at_launch` - (Required) Enables propagation of the tag to
   Amazon EC2 instances launched via this ASG

## Attributes Reference

The following attributes are exported:

* `id` - The autoscaling group name.
* `availability_zones` - The availability zones of the autoscale group.
* `min_size` - The minimum size of the autoscale group
* `max_size` - The maximum size of the autoscale group
* `default_cooldown` - Time between a scaling activity and the succeeding scaling activity.
* `name` - The name of the autoscale group
* `health_check_grace_period` - Time after instance comes into service before checking health.
* `health_check_type` - "EC2" or "ELB". Controls how health checking is done.
* `desired_capacity` -The number of Amazon EC2 instances that should be running in the group.
* `launch_configuration` - The launch configuration of the autoscale group
* `vpc_zone_identifier` - The VPC zone identifier
* `load_balancers` (Optional) The load balancer names associated with the
   autoscaling group.