CreateAutoScalingGroup

The name of the Auto Scaling group. This name must be unique per Region per account.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 255.

Pattern: [\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*

Required: Yes

One or more Availability Zones for the group. This parameter is optional if you specify one or more subnets for VPCZoneIdentifier.

Conditional: If your account supports EC2-Classic and VPC, this parameter is required to launch instances into EC2-Classic.

Type: Array of strings

Array Members: Minimum number of 1 item.

Length Constraints: Minimum length of 1. Maximum length of 255.

Pattern: [\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*

Required: No

The amount of time, in seconds, after a scaling activity completes before another scaling activity can start. The default value is 300.

For more information, see Scaling Cooldowns in the Amazon EC2 Auto Scaling User Guide.

Type: Integer

Required: No

The number of Amazon EC2 instances that the Auto Scaling group attempts to maintain. This number must be greater than or equal to the minimum size of the group and less than or equal to the maximum size of the group. If you do not specify a desired capacity, the default is the minimum size of the group.

Type: Integer

Required: No

The amount of time, in seconds, that Amazon EC2 Auto Scaling waits before checking the health status of an EC2 instance that has come into service. During this time, any health check failures for the instance are ignored. The default value is 0.

For more information, see Health Checks for Auto Scaling Instances in the Amazon EC2 Auto Scaling User Guide.

Conditional: This parameter is required if you are adding an ELB health check.

Type: Integer

Required: No

The service to use for the health checks. The valid values are EC2 and ELB. The default value is EC2. If you configure an Auto Scaling group to use ELB health checks, it considers the instance unhealthy if it fails either the EC2 status checks or the load balancer health checks.

For more information, see Health Checks for Auto Scaling Instances in the Amazon EC2 Auto Scaling User Guide.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 32.

Pattern: [\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*

Required: No

The ID of the instance used to create a launch configuration for the group.

When you specify an ID of an instance, Amazon EC2 Auto Scaling creates a new launch configuration and associates it with the group. This launch configuration derives its attributes from the specified instance, except for the block device mapping.

For more information, see Create an Auto Scaling Group Using an EC2 Instance in the Amazon EC2 Auto Scaling User Guide.

You must specify one of the following parameters in your request: LaunchConfigurationName, LaunchTemplate, InstanceId, or MixedInstancesPolicy.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 19.

Pattern: [\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*

Required: No

The name of the launch configuration.

For more information, see Creating an Auto Scaling Group Using a Launch Configuration in the Amazon EC2 Auto Scaling User Guide.

If you do not specify LaunchConfigurationName, you must specify one of the following parameters: InstanceId, LaunchTemplate, or MixedInstancesPolicy.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 1600.

Pattern: [\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*

Required: No

The launch template to use to launch instances.

For more information, see Creating an Auto Scaling Group Using a Launch Template in the Amazon EC2 Auto Scaling User Guide.

If you do not specify LaunchTemplate, you must specify one of the following parameters: InstanceId, LaunchConfigurationName, or MixedInstancesPolicy.

Type: LaunchTemplateSpecification object

Required: No

One or more lifecycle hooks.

Type: Array of LifecycleHookSpecification objects

Required: No

One or more Classic Load Balancers. To specify an Application Load Balancer or a Network Load Balancer, use TargetGroupARNs instead.

For more information, see Using a Load Balancer With an Auto Scaling Group in the Amazon EC2 Auto Scaling User Guide.

Type: Array of strings

Length Constraints: Minimum length of 1. Maximum length of 255.

Pattern: [\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*

Required: No

The maximum size of the group.

Type: Integer

Required: Yes

The minimum size of the group.

Type: Integer

Required: Yes

An embedded object that specifies a mixed instances policy. The required parameters must be specified. If optional parameters are unspecified, their default values are used.

The policy includes parameters that not only define the distribution of On-Demand Instances and Spot Instances, the maximum price to pay for Spot instances, and how the Auto Scaling group allocates instance types to fulfill On-Demand and Spot capacity, but also the parameters that specify the instance configuration information—the launch template and instance types.

For more information, see Auto Scaling Groups with Multiple Instance Types and Purchase Options in the Amazon EC2 Auto Scaling User Guide.

You must specify one of the following parameters in your request: LaunchConfigurationName, LaunchTemplate, InstanceId, or MixedInstancesPolicy.

Type: MixedInstancesPolicy object

Required: No

Indicates whether newly launched instances are protected from termination by Amazon EC2 Auto Scaling when scaling in.

For more information about preventing instances from terminating on scale in, see Instance Protection in the Amazon EC2 Auto Scaling User Guide.

Type: Boolean

Required: No

The name of the placement group into which to launch your instances, if any. A placement group is a logical grouping of instances within a single Availability Zone. You cannot specify multiple Availability Zones and a placement group. For more information, see Placement Groups in the Amazon EC2 User Guide for Linux Instances.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 255.

Pattern: [\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*

Required: No

The Amazon Resource Name (ARN) of the service-linked role that the Auto Scaling group uses to call other AWS services on your behalf. By default, Amazon EC2 Auto Scaling uses a service-linked role named AWSServiceRoleForAutoScaling, which it creates if it does not exist. For more information, see Service-Linked Roles in the Amazon EC2 Auto Scaling User Guide.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 1600.

Pattern: [\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*

Required: No

One or more tags.

For more information, see Tagging Auto Scaling Groups and Instances in the Amazon EC2 Auto Scaling User Guide.

Type: Array of Tag objects

Required: No

The Amazon Resource Names (ARN) of the target groups.

Type: Array of strings

Length Constraints: Minimum length of 1. Maximum length of 511.

Pattern: [\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*

Required: No

One or more termination policies used to select the instance to terminate. These policies are executed in the order that they are listed.

For more information, see Controlling Which Instances Auto Scaling Terminates During Scale In in the Amazon EC2 Auto Scaling User Guide.

Type: Array of strings

Length Constraints: Minimum length of 1. Maximum length of 1600.

Pattern: [\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*

Required: No

A comma-separated list of subnet IDs for your virtual private cloud (VPC).

If you specify VPCZoneIdentifier with AvailabilityZones, the subnets that you specify for this parameter must reside in those Availability Zones.

Conditional: If your account supports EC2-Classic and VPC, this parameter is required to launch instances into a VPC.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 2047.

Pattern: [\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*

Required: No

You already have an Auto Scaling group or launch configuration with this name.

HTTP Status Code: 400

You have already reached a limit for your Amazon EC2 Auto Scaling resources (for example, Auto Scaling groups, launch configurations, or lifecycle hooks). For more information, see DescribeAccountLimits.

HTTP Status Code: 400

You already have a pending update to an Amazon EC2 Auto Scaling resource (for example, an Auto Scaling group, instance, or load balancer).

HTTP Status Code: 500

The service-linked role is not yet ready for use.

HTTP Status Code: 500