RegisterGameServer - Amazon GameLift
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This operation is used with the Amazon GameLift FleetIQ solution and game server groups.

Creates a new game server resource and notifies Amazon GameLift FleetIQ that the game server is ready to host gameplay and players. This operation is called by a game server process that is running on an instance in a game server group. Registering game servers enables Amazon GameLift FleetIQ to track available game servers and enables game clients and services to claim a game server for a new game session.

To register a game server, identify the game server group and instance where the game server is running, and provide a unique identifier for the game server. You can also include connection and game server data.

Once a game server is successfully registered, it is put in status AVAILABLE. A request to register a game server may fail if the instance it is running on is in the process of shutting down as part of instance balancing or scale-down activity.

Learn more

Amazon GameLift FleetIQ Guide

Request Syntax

{ "ConnectionInfo": "string", "GameServerData": "string", "GameServerGroupName": "string", "GameServerId": "string", "InstanceId": "string" }

Request Parameters

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

The request accepts the following data in JSON format.


In the following list, the required parameters are described first.


A unique identifier for the game server group where the game server is running.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 256.

Pattern: [a-zA-Z0-9-\.]+|^arn:.*:gameservergroup\/[a-zA-Z0-9-\.]+

Required: Yes


A custom string that uniquely identifies the game server to register. Game server IDs are developer-defined and must be unique across all game server groups in your Amazon account.

Type: String

Length Constraints: Minimum length of 3. Maximum length of 128.

Pattern: [a-zA-Z0-9-\.]+

Required: Yes


The unique identifier for the instance where the game server is running. This ID is available in the instance metadata. EC2 instance IDs use a 17-character format, for example: i-1234567890abcdef0.

Type: String

Length Constraints: Fixed length of 19.

Pattern: ^i-[0-9a-zA-Z]{17}$

Required: Yes


Information that is needed to make inbound client connections to the game server. This might include the IP address and port, DNS name, and other information.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 512.

Pattern: .*\S.*

Required: No


A set of custom game server properties, formatted as a single string value. This data is passed to a game client or service when it requests information on game servers.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 1024.

Pattern: .*\S.*

Required: No

Response Syntax

{ "GameServer": { "ClaimStatus": "string", "ConnectionInfo": "string", "GameServerData": "string", "GameServerGroupArn": "string", "GameServerGroupName": "string", "GameServerId": "string", "InstanceId": "string", "LastClaimTime": number, "LastHealthCheckTime": number, "RegistrationTime": number, "UtilizationStatus": "string" } }

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.


Object that describes the newly registered game server.

Type: GameServer object


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


The requested operation would cause a conflict with the current state of a service resource associated with the request. Resolve the conflict before retrying this request.

HTTP Status Code: 400


The service encountered an unrecoverable internal failure while processing the request. Clients can retry such requests immediately or after a waiting period.

HTTP Status Code: 500


One or more parameter values in the request are invalid. Correct the invalid parameter values before retrying.

HTTP Status Code: 400


The requested operation would cause the resource to exceed the allowed service limit. Resolve the issue before retrying.

HTTP Status Code: 400


The client failed authentication. Clients should not retry such requests.

HTTP Status Code: 400


Register a game server

This example illustrates how an game server process notifies GameLift that it is ready to host a game.

Sample Request

{ "GameServerGroupName": "MegaFrogServers_NA", "ConnectionInfo": "", "GameServerId": "mega-frog-game-12345678", "InstanceId": "i-1234567890abcdef0" } CLI command: aws gamelift register-game-server \ --game-server-group-name MegaFrogServers_NA \ --connection-info "" \ --game-server-id mega-frog-game-12345678 \ --instance-id i-1234567890abcdef0

Sample Response

{ "GameServer": { "ClaimStatus": "", "ConnectionInfo": "", "GameServerData": "", "GameServerGroupArn": "arn:aws:gamelift:us-west-2::GameServerGroup/MegaFrogServers_NA", "GameServerGroupName": "MegaFrogServers_NA", "GameServerId": "mega-frog-game-12345678", "InstanceId": "i-1234567890abcdef0", "LastClaimTime": , "LastHealthCheckTime": 1580218197.293, "RegistrationTime": 1580218197.293, "UtilizationStatus": "AVAILABLE" } }

See Also

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