# CreateNode
<a name="API_CreateNode"></a>

Creates a node on the specified blockchain network.

Applies to Hyperledger Fabric and Ethereum.

## Request Syntax
<a name="API_CreateNode_RequestSyntax"></a>

```
POST /networks/networkId/nodes HTTP/1.1
Content-type: application/json

{
   "ClientRequestToken": "string",
   "MemberId": "string",
   "NodeConfiguration": { 
      "AvailabilityZone": "string",
      "InstanceType": "string",
      "LogPublishingConfiguration": { 
         "Fabric": { 
            "ChaincodeLogs": { 
               "Cloudwatch": { 
                  "Enabled": boolean
               }
            },
            "PeerLogs": { 
               "Cloudwatch": { 
                  "Enabled": boolean
               }
            }
         }
      },
      "StateDB": "string"
   },
   "Tags": { 
      "string" : "string" 
   }
}
```

## URI Request Parameters
<a name="API_CreateNode_RequestParameters"></a>

The request uses the following URI parameters.

 ** [networkId](#API_CreateNode_RequestSyntax) **   <a name="ManagedBlockchain-CreateNode-request-uri-NetworkId"></a>
The unique identifier of the network for the node.  
Ethereum public networks have the following `NetworkId`s:  
+  `n-ethereum-mainnet` 
Length Constraints: Minimum length of 1. Maximum length of 32.  
Required: Yes

## Request Body
<a name="API_CreateNode_RequestBody"></a>

The request accepts the following data in JSON format.

 ** [ClientRequestToken](#API_CreateNode_RequestSyntax) **   <a name="ManagedBlockchain-CreateNode-request-ClientRequestToken"></a>
A unique, case-sensitive identifier that you provide to ensure the idempotency of the operation. An idempotent operation completes no more than one time. This identifier is required only if you make a service request directly using an HTTP client. It is generated automatically if you use an AWS SDK or the AWS CLI.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 64.  
Required: Yes

 ** [MemberId](#API_CreateNode_RequestSyntax) **   <a name="ManagedBlockchain-CreateNode-request-MemberId"></a>
The unique identifier of the member that owns this node.  
Applies only to Hyperledger Fabric.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 32.  
Required: No

 ** [NodeConfiguration](#API_CreateNode_RequestSyntax) **   <a name="ManagedBlockchain-CreateNode-request-NodeConfiguration"></a>
The properties of a node configuration.  
Type: [NodeConfiguration](API_NodeConfiguration.md) object  
Required: Yes

 ** [Tags](#API_CreateNode_RequestSyntax) **   <a name="ManagedBlockchain-CreateNode-request-Tags"></a>
Tags to assign to the node.  
 Each tag consists of a key and an optional value. You can specify multiple key-value pairs in a single request with an overall maximum of 50 tags allowed per resource.  
For more information about tags, see [Tagging Resources](https://docs.aws.amazon.com/managed-blockchain/latest/ethereum-dev/tagging-resources.html) in the *Amazon Managed Blockchain Ethereum Developer Guide*, or [Tagging Resources](https://docs.aws.amazon.com/managed-blockchain/latest/hyperledger-fabric-dev/tagging-resources.html) in the *Amazon Managed Blockchain Hyperledger Fabric Developer Guide*.  
Type: String to string map  
Map Entries: Minimum number of 0 items. Maximum number of 50 items.  
Key Length Constraints: Minimum length of 1. Maximum length of 128.  
Value Length Constraints: Minimum length of 0. Maximum length of 256.  
Required: No

## Response Syntax
<a name="API_CreateNode_ResponseSyntax"></a>

```
HTTP/1.1 200
Content-type: application/json

{
   "NodeId": "string"
}
```

## Response Elements
<a name="API_CreateNode_ResponseElements"></a>

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

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

 ** [NodeId](#API_CreateNode_ResponseSyntax) **   <a name="ManagedBlockchain-CreateNode-response-NodeId"></a>
The unique identifier of the node.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 32.

## Errors
<a name="API_CreateNode_Errors"></a>

For information about the errors that are common to all actions, see [Common Error Types](CommonErrors.md).

 ** AccessDeniedException **   
You don't have sufficient access to perform this action.  
HTTP Status Code: 403

 ** InternalServiceErrorException **   
The request processing has failed because of an unknown error, exception or failure.  
HTTP Status Code: 500

 ** InvalidRequestException **   
The action or operation requested is invalid. Verify that the action is typed correctly.  
HTTP Status Code: 400

 ** ResourceAlreadyExistsException **   
A resource request is issued for a resource that already exists.  
HTTP Status Code: 409

 ** ResourceLimitExceededException **   
The maximum number of resources of that type already exist. Ensure the resources requested are within the boundaries of the service edition and your account limits.  
HTTP Status Code: 429

 ** ResourceNotFoundException **   
A requested resource doesn't exist. It may have been deleted or referenced incorrectly.    
 ** ResourceName **   
A requested resource doesn't exist. It may have been deleted or referenced inaccurately.
HTTP Status Code: 404

 ** ResourceNotReadyException **   
The requested resource exists but isn't in a status that can complete the operation.  
HTTP Status Code: 409

 ** ThrottlingException **   
The request or operation couldn't be performed because a service is throttling requests. The most common source of throttling errors is creating resources that exceed your service limit for this resource type. Request a limit increase or delete unused resources if possible.  
HTTP Status Code: 429

 ** TooManyTagsException **   
    
 ** ResourceName **   

HTTP Status Code: 400

## See Also
<a name="API_CreateNode_SeeAlso"></a>

For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS Command Line Interface V2](https://docs.aws.amazon.com/goto/cli2/managedblockchain-2018-09-24/CreateNode) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/managedblockchain-2018-09-24/CreateNode) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/managedblockchain-2018-09-24/CreateNode) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/managedblockchain-2018-09-24/CreateNode) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/managedblockchain-2018-09-24/CreateNode) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/managedblockchain-2018-09-24/CreateNode) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/managedblockchain-2018-09-24/CreateNode) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/managedblockchain-2018-09-24/CreateNode) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/managedblockchain-2018-09-24/CreateNode) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/managedblockchain-2018-09-24/CreateNode)