AWS SDK Version 3 for .NET
API Reference

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Attaches one or more EC2 instances to the specified Auto Scaling group.

When you attach instances, Auto Scaling increases the desired capacity of the group by the number of instances being attached. If the number of instances being attached plus the desired capacity of the group exceeds the maximum size of the group, the operation fails.

If there is a Classic Load Balancer attached to your Auto Scaling group, the instances are also registered with the load balancer. If there are target groups attached to your Auto Scaling group, the instances are also registered with the target groups.

For more information, see Attach EC2 Instances to Your Auto Scaling Group in the Auto Scaling User Guide.

Note:

For PCL this operation is only available in asynchronous form. Please refer to AttachInstancesAsync.

Namespace: Amazon.AutoScaling
Assembly: AWSSDK.AutoScaling.dll
Version: 3.x.y.z

Syntax

C#
public abstract AttachInstancesResponse AttachInstances(
         AttachInstancesRequest request
)
Parameters
request
Type: Amazon.AutoScaling.Model.AttachInstancesRequest

Container for the necessary parameters to execute the AttachInstances service method.

Return Value
The response from the AttachInstances service method, as returned by AutoScaling.

Exceptions

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

Examples

This example attaches the specified instance to the specified Auto Scaling group.

To attach an instance to an Auto Scaling group


var response = client.AttachInstances(new AttachInstancesRequest 
{
    AutoScalingGroupName = "my-auto-scaling-group",
    InstanceIds = new List {
        "i-93633f9b"
    }
});


            

Version Information

.NET Framework:
Supported in: 4.5, 4.0, 3.5

Portable Class Library:
Supported in: Windows Store Apps
Supported in: Windows Phone 8.1
Supported in: Xamarin Android
Supported in: Xamarin iOS (Unified)
Supported in: Xamarin.Forms

See Also