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[ aws . autoscaling ]

attach-instances

Description

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

When you attach instances, Amazon EC2 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 Amazon EC2 Auto Scaling User Guide .

See also: AWS API Documentation

See 'aws help' for descriptions of global parameters.

Synopsis

  attach-instances
[--instance-ids <value>]
--auto-scaling-group-name <value>
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Options

--instance-ids (list)

The IDs of the instances. You can specify up to 20 instances.

(string)

Syntax:

"string" "string" ...

--auto-scaling-group-name (string)

The name of the Auto Scaling group.

--cli-input-json (string) Performs service operation based on the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, the CLI values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command.

See 'aws help' for descriptions of global parameters.

Examples

Note

To use the following examples, you must have the AWS CLI installed and configured. See the Getting started guide in the AWS CLI User Guide for more information.

Unless otherwise stated, all examples have unix-like quotation rules. These examples will need to be adapted to your terminal's quoting rules. See Using quotation marks with strings in the AWS CLI User Guide .

To attach an instance to an Auto Scaling group

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

aws autoscaling attach-instances \
    --instance-ids i-061c63c5eb45f0416 \
    --auto-scaling-group-name my-asg

This command produces no output.

Output

None