Amazon Elastic Container Service
API Reference (API Version 2014-11-13)

CreateCluster

Creates a new Amazon ECS cluster. By default, your account receives a default cluster when you launch your first container instance. However, you can create your own cluster with a unique name with the CreateCluster action.

Note

When you call the CreateCluster API operation, Amazon ECS attempts to create the Amazon ECS service-linked role for your account so that required resources in other AWS services can be managed on your behalf. However, if the IAM user that makes the call does not have permissions to create the service-linked role, it is not created. For more information, see Using Service-Linked Roles for Amazon ECS in the Amazon Elastic Container Service Developer Guide.

Request Syntax

{ "capacityProviders": [ "string" ], "clusterName": "string", "defaultCapacityProviderStrategy": [ { "base": number, "capacityProvider": "string", "weight": number } ], "settings": [ { "name": "string", "value": "string" } ], "tags": [ { "key": "string", "value": "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.

capacityProviders

The short name or full Amazon Resource Name (ARN) of one or more capacity providers to associate with the cluster.

If specifying a capacity provider that uses an Auto Scaling group, the capacity provider must already be created and not already associated with another cluster. New capacity providers can be created with the CreateCapacityProvider API operation.

To use a AWS Fargate capacity provider, specify either the FARGATE or FARGATE_SPOT capacity providers. The AWS Fargate capacity providers are available to all accounts and only need to be associated with a cluster to be used.

The PutClusterCapacityProviders API operation is used to update the list of available capacity providers for a cluster after the cluster is created.

Type: Array of strings

Required: No

clusterName

The name of your cluster. If you do not specify a name for your cluster, you create a cluster named default. Up to 255 letters (uppercase and lowercase), numbers, and hyphens are allowed.

Type: String

Required: No

defaultCapacityProviderStrategy

The capacity provider strategy to use by default for the cluster.

When creating a service or running a task on a cluster, if no capacity provider or launch type is specified then the default capacity provider strategy for the cluster is used.

A capacity provider strategy consists of one or more capacity providers along with the base and weight to assign to them. A capacity provider must be associated with the cluster to be used in a capacity provider strategy. The PutClusterCapacityProviders API is used to associate a capacity provider with a cluster. Only capacity providers with an ACTIVE or UPDATING status can be used.

If specifying a capacity provider that uses an Auto Scaling group, the capacity provider must already be created. New capacity providers can be created with the CreateCapacityProvider API operation.

To use a AWS Fargate capacity provider, specify either the FARGATE or FARGATE_SPOT capacity providers. The AWS Fargate capacity providers are available to all accounts and only need to be associated with a cluster to be used.

If a default capacity provider strategy is not defined for a cluster during creation, it can be defined later with the PutClusterCapacityProviders API operation.

Type: Array of CapacityProviderStrategyItem objects

Required: No

settings

The setting to use when creating a cluster. This parameter is used to enable CloudWatch Container Insights for a cluster. If this value is specified, it will override the containerInsights value set with PutAccountSetting or PutAccountSettingDefault.

Type: Array of ClusterSetting objects

Required: No

tags

The metadata that you apply to the cluster to help you categorize and organize them. Each tag consists of a key and an optional value, both of which you define.

The following basic restrictions apply to tags:

  • Maximum number of tags per resource - 50

  • For each resource, each tag key must be unique, and each tag key can have only one value.

  • Maximum key length - 128 Unicode characters in UTF-8

  • Maximum value length - 256 Unicode characters in UTF-8

  • If your tagging schema is used across multiple services and resources, remember that other services may have restrictions on allowed characters. Generally allowed characters are: letters, numbers, and spaces representable in UTF-8, and the following characters: + - = . _ : / @.

  • Tag keys and values are case-sensitive.

  • Do not use aws:, AWS:, or any upper or lowercase combination of such as a prefix for either keys or values as it is reserved for AWS use. You cannot edit or delete tag keys or values with this prefix. Tags with this prefix do not count against your tags per resource limit.

Type: Array of Tag objects

Array Members: Minimum number of 0 items. Maximum number of 50 items.

Required: No

Response Syntax

{ "cluster": { "activeServicesCount": number, "attachments": [ { "details": [ { "name": "string", "value": "string" } ], "id": "string", "status": "string", "type": "string" } ], "attachmentsStatus": "string", "capacityProviders": [ "string" ], "clusterArn": "string", "clusterName": "string", "defaultCapacityProviderStrategy": [ { "base": number, "capacityProvider": "string", "weight": number } ], "pendingTasksCount": number, "registeredContainerInstancesCount": number, "runningTasksCount": number, "settings": [ { "name": "string", "value": "string" } ], "statistics": [ { "name": "string", "value": "string" } ], "status": "string", "tags": [ { "key": "string", "value": "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.

cluster

The full description of your new cluster.

Type: Cluster object

Errors

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

ClientException

These errors are usually caused by a client action, such as using an action or resource on behalf of a user that doesn't have permissions to use the action or resource, or specifying an identifier that is not valid.

HTTP Status Code: 400

InvalidParameterException

The specified parameter is invalid. Review the available parameters for the API request.

HTTP Status Code: 400

ServerException

These errors are usually caused by a server issue.

HTTP Status Code: 500

Example

In the following example or examples, the Authorization header contents (AUTHPARAMS) must be replaced with an AWS Signature Version 4 signature. For more information, see Signature Version 4 Signing Process in the AWS General Reference.

You only need to learn how to sign HTTP requests if you intend to create them manually. When you use the AWS Command Line Interface (AWS CLI) or one of the AWS SDKs to make requests to AWS, these tools automatically sign the requests for you, with the access key that you specify when you configure the tools. When you use these tools, you don't have to sign requests yourself.

Example

This example request creates a cluster called My-cluster.

Sample Request

POST / HTTP/1.1 Host: ecs.us-east-1.amazonaws.com Accept-Encoding: identity Content-Length: 29 X-Amz-Target: AmazonEC2ContainerServiceV20141113.CreateCluster X-Amz-Date: 20150429T163840Z Content-Type: application/x-amz-json-1.1 Authorization: AUTHPARAMS { "clusterName": "My-cluster" }

Sample Response

HTTP/1.1 200 OK Server: Server Date: Wed, 29 Apr 2015 16:38:41 GMT Content-Type: application/x-amz-json-1.1 Content-Length: 209 Connection: keep-alive x-amzn-RequestId: 123a4b56-7c89-01d2-3ef4-example5678f { "cluster": { "activeServicesCount": 0, "clusterArn": "arn:aws:ecs:us-east-1:012345678910:cluster/My-cluster", "clusterName": "My-cluster", "pendingTasksCount": 0, "registeredContainerInstancesCount": 0, "runningTasksCount": 0, "status": "ACTIVE" } }

See Also

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