CreateServer

Instantiates an auto-scaling virtual server based on the selected file transfer protocol in AWS. When you make updates to your file transfer protocol-enabled server or when you work with users, use the service-generated ServerId property that is assigned to the newly created server.

Request Syntax

{
   "Certificate": "string",
   "Domain": "string",
   "EndpointDetails": { 
      "AddressAllocationIds": [ "string" ],
      "SecurityGroupIds": [ "string" ],
      "SubnetIds": [ "string" ],
      "VpcEndpointId": "string",
      "VpcId": "string"
   },
   "EndpointType": "string",
   "HostKey": "string",
   "IdentityProviderDetails": { 
      "DirectoryId": "string",
      "Function": "string",
      "InvocationRole": "string",
      "SftpAuthenticationMethods": "string",
      "Url": "string"
   },
   "IdentityProviderType": "string",
   "LoggingRole": "string",
   "PostAuthenticationLoginBanner": "string",
   "PreAuthenticationLoginBanner": "string",
   "ProtocolDetails": { 
      "As2Transports": [ "string" ],
      "PassiveIp": "string",
      "SetStatOption": "string",
      "TlsSessionResumptionMode": "string"
   },
   "Protocols": [ "string" ],
   "S3StorageOptions": { 
      "DirectoryListingOptimization": "string"
   },
   "SecurityPolicyName": "string",
   "StructuredLogDestinations": [ "string" ],
   "Tags": [ 
      { 
         "Key": "string",
         "Value": "string"
      }
   ],
   "WorkflowDetails": { 
      "OnPartialUpload": [ 
         { 
            "ExecutionRole": "string",
            "WorkflowId": "string"
         }
      ],
      "OnUpload": [ 
         { 
            "ExecutionRole": "string",
            "WorkflowId": "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.

Certificate

The Amazon Resource Name (ARN) of the AWS Certificate Manager (ACM) certificate. Required when Protocols is set to FTPS.

To request a new public certificate, see Request a public certificate in the AWS Certificate Manager User Guide.

To import an existing certificate into ACM, see Importing certificates into ACM in the AWS Certificate Manager User Guide.

To request a private certificate to use FTPS through private IP addresses, see Request a private certificate in the AWS Certificate Manager User Guide.

Certificates with the following cryptographic algorithms and key sizes are supported:

• 2048-bit RSA (RSA_2048)

• 4096-bit RSA (RSA_4096)

• Elliptic Prime Curve 256 bit (EC_prime256v1)

• Elliptic Prime Curve 384 bit (EC_secp384r1)

• Elliptic Prime Curve 521 bit (EC_secp521r1)

Note

The certificate must be a valid SSL/TLS X.509 version 3 certificate with FQDN or IP address specified and information about the issuer.

Type: String

Length Constraints: Minimum length of 0. Maximum length of 1600.

Required: No

Domain

The domain of the storage system that is used for file transfers. There are two domains available: Amazon Simple Storage Service (Amazon S3) and Amazon Elastic File System (Amazon EFS). The default value is S3.

Note

After the server is created, the domain cannot be changed.

Type: String

Valid Values: S3 | EFS

Required: No

EndpointDetails

The virtual private cloud (VPC) endpoint settings that are configured for your server. When you host your endpoint within your VPC, you can make your endpoint accessible only to resources within your VPC, or you can attach Elastic IP addresses and make your endpoint accessible to clients over the internet. Your VPC's default security groups are automatically assigned to your endpoint.

Type: EndpointDetails object

Required: No

EndpointType

The type of endpoint that you want your server to use. You can choose to make your server's endpoint publicly accessible (PUBLIC) or host it inside your VPC. With an endpoint that is hosted in a VPC, you can restrict access to your server and resources only within your VPC or choose to make it internet facing by attaching Elastic IP addresses directly to it.

Note

After May 19, 2021, you won't be able to create a server using EndpointType=VPC_ENDPOINT in your AWS account if your account hasn't already done so before May 19, 2021. If you have already created servers with EndpointType=VPC_ENDPOINT in your AWS account on or before May 19, 2021, you will not be affected. After this date, use EndpointType=VPC.

For more information, see Discontinuing the use of VPC_ENDPOINT.

It is recommended that you use VPC as the EndpointType. With this endpoint type, you have the option to directly associate up to three Elastic IPv4 addresses (BYO IP included) with your server's endpoint and use VPC security groups to restrict traffic by the client's public IP address. This is not possible with EndpointType set to VPC_ENDPOINT.

Type: String

Valid Values: PUBLIC | VPC | VPC_ENDPOINT

Required: No

HostKey

The RSA, ECDSA, or ED25519 private key to use for your SFTP-enabled server. You can add multiple host keys, in case you want to rotate keys, or have a set of active keys that use different algorithms.

Use the following command to generate an RSA 2048 bit key with no passphrase:

ssh-keygen -t rsa -b 2048 -N "" -m PEM -f my-new-server-key.

Use a minimum value of 2048 for the -b option. You can create a stronger key by using 3072 or 4096.

Use the following command to generate an ECDSA 256 bit key with no passphrase:

ssh-keygen -t ecdsa -b 256 -N "" -m PEM -f my-new-server-key.

Valid values for the -b option for ECDSA are 256, 384, and 521.

Use the following command to generate an ED25519 key with no passphrase:

ssh-keygen -t ed25519 -N "" -f my-new-server-key.

For all of these commands, you can replace my-new-server-key with a string of your choice.

Important

If you aren't planning to migrate existing users from an existing SFTP-enabled server to a new server, don't update the host key. Accidentally changing a server's host key can be disruptive.

For more information, see Update host keys for your SFTP-enabled server in the AWS Transfer Family User Guide.

Type: String

Length Constraints: Minimum length of 0. Maximum length of 4096.

Required: No

IdentityProviderDetails

Required when IdentityProviderType is set to AWS_DIRECTORY_SERVICE, AWS_LAMBDA or API_GATEWAY. Accepts an array containing all of the information required to use a directory in AWS_DIRECTORY_SERVICE or invoke a customer-supplied authentication API, including the API Gateway URL. Cannot be specified when IdentityProviderType is set to SERVICE_MANAGED.

Type: IdentityProviderDetails object

Required: No

IdentityProviderType

The mode of authentication for a server. The default value is SERVICE_MANAGED, which allows you to store and access user credentials within the AWS Transfer Family service.

Use AWS_DIRECTORY_SERVICE to provide access to Active Directory groups in AWS Directory Service for Microsoft Active Directory or Microsoft Active Directory in your on-premises environment or in AWS using AD Connector. This option also requires you to provide a Directory ID by using the IdentityProviderDetails parameter.

Use the API_GATEWAY value to integrate with an identity provider of your choosing. The API_GATEWAY setting requires you to provide an Amazon API Gateway endpoint URL to call for authentication by using the IdentityProviderDetails parameter.

Use the AWS_LAMBDA value to directly use an AWS Lambda function as your identity provider. If you choose this value, you must specify the ARN for the Lambda function in the Function parameter for the IdentityProviderDetails data type.

Type: String

Valid Values: SERVICE_MANAGED | API_GATEWAY | AWS_DIRECTORY_SERVICE | AWS_LAMBDA

Required: No

LoggingRole

The Amazon Resource Name (ARN) of the AWS Identity and Access Management (IAM) role that allows a server to turn on Amazon CloudWatch logging for Amazon S3 or Amazon EFSevents. When set, you can view user activity in your CloudWatch logs.

Type: String

Length Constraints: Minimum length of 0. Maximum length of 2048.

Pattern: (|arn:.*role/\S+)

Required: No

PostAuthenticationLoginBanner

Specifies a string to display when users connect to a server. This string is displayed after the user authenticates.

Note

The SFTP protocol does not support post-authentication display banners.

Type: String

Length Constraints: Minimum length of 0. Maximum length of 4096.

Pattern: [\x09-\x0D\x20-\x7E]*

Required: No

PreAuthenticationLoginBanner

Specifies a string to display when users connect to a server. This string is displayed before the user authenticates. For example, the following banner displays details about using the system:

This system is for the use of authorized users only. Individuals using this computer system without authority, or in excess of their authority, are subject to having all of their activities on this system monitored and recorded by system personnel.

Type: String

Length Constraints: Minimum length of 0. Maximum length of 4096.

Pattern: [\x09-\x0D\x20-\x7E]*

Required: No

ProtocolDetails

The protocol settings that are configured for your server.

• To indicate passive mode (for FTP and FTPS protocols), use the PassiveIp parameter. Enter a single dotted-quad IPv4 address, such as the external IP address of a firewall, router, or load balancer.

• To ignore the error that is generated when the client attempts to use the SETSTAT command on a file that you are uploading to an Amazon S3 bucket, use the SetStatOption parameter. To have the AWS Transfer Family server ignore the SETSTAT command and upload files without needing to make any changes to your SFTP client, set the value to ENABLE_NO_OP. If you set the SetStatOption parameter to ENABLE_NO_OP, Transfer Family generates a log entry to Amazon CloudWatch Logs, so that you can determine when the client is making a SETSTAT call.

• To determine whether your AWS Transfer Family server resumes recent, negotiated sessions through a unique session ID, use the TlsSessionResumptionMode parameter.

• As2Transports indicates the transport method for the AS2 messages. Currently, only HTTP is supported.

Type: ProtocolDetails object

Required: No

Protocols

Specifies the file transfer protocol or protocols over which your file transfer protocol client can connect to your server's endpoint. The available protocols are:

• SFTP (Secure Shell (SSH) File Transfer Protocol): File transfer over SSH

• FTPS (File Transfer Protocol Secure): File transfer with TLS encryption

• FTP (File Transfer Protocol): Unencrypted file transfer

• AS2 (Applicability Statement 2): used for transporting structured business-to-business data

Note

• If you select FTPS, you must choose a certificate stored in AWS Certificate Manager (ACM) which is used to identify your server when clients connect to it over FTPS.

• If Protocol includes either FTP or FTPS, then the EndpointType must be VPC and the IdentityProviderType must be either AWS_DIRECTORY_SERVICE, AWS_LAMBDA, or API_GATEWAY.

• If Protocol includes FTP, then AddressAllocationIds cannot be associated.

• If Protocol is set only to SFTP, the EndpointType can be set to PUBLIC and the IdentityProviderType can be set any of the supported identity types: SERVICE_MANAGED, AWS_DIRECTORY_SERVICE, AWS_LAMBDA, or API_GATEWAY.

• If Protocol includes AS2, then the EndpointType must be VPC, and domain must be Amazon S3.

Type: Array of strings

Array Members: Minimum number of 1 item. Maximum number of 4 items.

Valid Values: SFTP | FTP | FTPS | AS2

Required: No

S3StorageOptions

Specifies whether or not performance for your Amazon S3 directories is optimized. This is disabled by default.

By default, home directory mappings have a TYPE of DIRECTORY. If you enable this option, you would then need to explicitly set the HomeDirectoryMapEntry Type to FILE if you want a mapping to have a file target.

Type: S3StorageOptions object

Required: No

SecurityPolicyName

Specifies the name of the security policy for the server.

Type: String

Length Constraints: Minimum length of 0. Maximum length of 100.

Pattern: Transfer[A-Za-z0-9]*SecurityPolicy-[A-Za-z0-9-]+

Required: No

StructuredLogDestinations

Specifies the log groups to which your server logs are sent.

To specify a log group, you must provide the ARN for an existing log group. In this case, the format of the log group is as follows:

arn:aws:logs:region-name:amazon-account-id:log-group:log-group-name:*

For example, arn:aws:logs:us-east-1:111122223333:log-group:mytestgroup:*

If you have previously specified a log group for a server, you can clear it, and in effect turn off structured logging, by providing an empty value for this parameter in an update-server call. For example:

update-server --server-id s-1234567890abcdef0 --structured-log-destinations

Type: Array of strings

Array Members: Minimum number of 0 items. Maximum number of 1 item.

Length Constraints: Minimum length of 20. Maximum length of 1600.

Pattern: arn:\S+

Required: No

Tags

Key-value pairs that can be used to group and search for servers.

Type: Array of Tag objects

Array Members: Minimum number of 1 item. Maximum number of 50 items.

Required: No

WorkflowDetails

Specifies the workflow ID for the workflow to assign and the execution role that's used for executing the workflow.

In addition to a workflow to execute when a file is uploaded completely, WorkflowDetails can also contain a workflow ID (and execution role) for a workflow to execute on partial upload. A partial upload occurs when the server session disconnects while the file is still being uploaded.

Type: WorkflowDetails object

Required: No

Response Syntax

{
   "ServerId": "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.

ServerId

The service-assigned identifier of the server that is created.

Type: String

Length Constraints: Fixed length of 19.

Pattern: s-([0-9a-f]{17})

Errors

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

AccessDeniedException

You do not have sufficient access to perform this action.

HTTP Status Code: 400

InternalServiceError

This exception is thrown when an error occurs in the AWS Transfer Family service.

HTTP Status Code: 500

InvalidRequestException

This exception is thrown when the client submits a malformed request.

HTTP Status Code: 400

ResourceExistsException

The requested resource does not exist, or exists in a region other than the one specified for the command.

HTTP Status Code: 400

ResourceNotFoundException

This exception is thrown when a resource is not found by the AWSTransfer Family service.

HTTP Status Code: 400

ServiceUnavailableException

The request has failed because the AWSTransfer Family service is not available.

HTTP Status Code: 500

ThrottlingException

The request was denied due to request throttling.

HTTP Status Code: 400

Examples

Example

The following example creates a new server using a VPC_ENDPOINT.

Sample Request

{     
   "EndpointType": "VPC",
   "EndpointDetails":...,
   "HostKey": "Your RSA private key",
   "IdentityProviderDetails": "IdentityProvider",
   "IdentityProviderType": "SERVICE_MANAGED",
   "LoggingRole": "CloudWatchLoggingRole",
   "Tags": [ 
      { 
         "Key": "Name",
         "Value": "MyServer"
      }
   ]
}

Example

This is a sample response for this API call.

Sample Response

{
   "ServerId": "s-01234567890abcdef"
}

See Also

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

• AWS Command Line Interface

• AWS SDK for .NET

• AWS SDK for C++

• AWS SDK for Go v2

• AWS SDK for Java V2

• AWS SDK for JavaScript V3

• AWS SDK for PHP V3

• AWS SDK for Python

• AWS SDK for Ruby V3