SetInstanceProtection - Amazon EC2 Auto Scaling
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Updates the instance protection settings of the specified instances. This operation cannot be called on instances in a warm pool.

For more information, see Use instance scale-in protection in the Amazon EC2 Auto Scaling User Guide.

If you exceed your maximum limit of instance IDs, which is 50 per Auto Scaling group, the call fails.

Request Parameters

For information about the parameters that are common to all actions, see Common Parameters.


The name of the Auto Scaling group.

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 instance IDs. You can specify up to 50 instances.

Type: Array of strings

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

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

Required: Yes


Indicates whether the instance is protected from termination by Amazon EC2 Auto Scaling when scaling in.

Type: Boolean

Required: Yes


For information about the errors that are common to all actions, see Common Errors.


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



This example illustrates one usage of SetInstanceProtection.

Sample Request &AutoScalingGroupName=my-asg &InstanceIds.member.1=i-1234567890abcdef0 &ProtectedFromScaleIn=false &Version=2011-01-01 &AUTHPARAMS

See Also

For more information about using this API in one of the language-specific Amazon SDKs, see the following: