Table Of Contents


User Guide

First time using the AWS CLI? See the User Guide for help getting started.

[ aws . ssm ]



Registers your on-premises server or virtual machine with Amazon EC2 so that you can manage these resources using Run Command. An on-premises server or virtual machine that has been registered with EC2 is called a managed instance. For more information about activations, see Setting Up AWS Systems Manager for Hybrid Environments .

See also: AWS API Documentation

See 'aws help' for descriptions of global parameters.


[--description <value>]
[--default-instance-name <value>]
--iam-role <value>
[--registration-limit <value>]
[--expiration-date <value>]
[--tags <value>]
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]


--description (string)

A user-defined description of the resource that you want to register with Amazon EC2.


Do not enter personally identifiable information in this field.

--default-instance-name (string)

The name of the registered, managed instance as it will appear in the Amazon EC2 console or when you use the AWS command line tools to list EC2 resources.


Do not enter personally identifiable information in this field.

--iam-role (string)

The Amazon Identity and Access Management (IAM) role that you want to assign to the managed instance.

--registration-limit (integer)

Specify the maximum number of managed instances you want to register. The default value is 1 instance.

--expiration-date (timestamp)

The date by which this activation request should expire. The default value is 24 hours.

--tags (list)

Optional metadata that you assign to a resource. Tags enable you to categorize a resource in different ways, such as by purpose, owner, or environment. For example, you might want to tag an activation to identify which servers or virtual machines (VMs) in your on-premises environment you intend to activate. In this case, you could specify the following key name/value pairs:

  • Key=OS,Value=Windows
  • Key=Environment,Value=Production


When you install SSM Agent on your on-premises servers and VMs, you specify an activation ID and code. When you specify the activation ID and code, tags assigned to the activation are automatically applied to the on-premises servers or VMs.

You can't add tags to or delete tags from an existing activation. You can tag your on-premises servers and VMs after they connect to Systems Manager for the first time and are assigned a managed instance ID. This means they are listed in the AWS Systems Manager console with an ID that is prefixed with "mi-". For information about how to add tags to your managed instances, see AddTagsToResource . For information about how to remove tags from your managed instances, see RemoveTagsFromResource .

Shorthand Syntax:

Key=string,Value=string ...

JSON Syntax:

    "Key": "string",
    "Value": "string"

--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.


To create an activation

This example creates a managed instance.


aws ssm create-activation --default-instance-name "MyWebServers" --iam-role "AutomationRole" --registration-limit 10


  "ActivationCode": "Zqr175DJ+sPQRHsmbzzf",
  "ActivationId": "5b9e0074-65d3-4587-8620-3e0b0938db9e"


ActivationId -> (string)

The ID number generated by the system when it processed the activation. The activation ID functions like a user name.

ActivationCode -> (string)

The code the system generates when it processes the activation. The activation code functions like a password to validate the activation ID.