AWS::EKS::Cluster

Creates an Amazon EKS control plane.

The Amazon EKS control plane consists of control plane instances that run the Kubernetes software, such as etcd and the API server. The control plane runs in an account managed by AWS, and the Kubernetes API is exposed via the Amazon EKS API server endpoint. Each Amazon EKS cluster control plane is single-tenant and unique and runs on its own set of Amazon EC2 instances.

The cluster control plane is provisioned across multiple Availability Zones and fronted by an Elastic Load Balancing Network Load Balancer. Amazon EKS also provisions elastic network interfaces in your VPC subnets to provide connectivity from the control plane instances to the worker nodes (for example, to support kubectl exec, logs, and proxy data flows).

Amazon EKS worker nodes run in your AWS account and connect to your cluster's control plane via the Kubernetes API server endpoint and a certificate file that is created for your cluster.

Cluster creation typically takes between 10 and 15 minutes. After you create an Amazon EKS cluster, you must configure your Kubernetes tooling to communicate with the API server and launch worker nodes into your cluster. For more information, see Managing Cluster Authentication and Launching Amazon EKS Worker Nodes in the Amazon EKS User Guide.

Syntax

To declare this entity in your AWS CloudFormation template, use the following syntax:

JSON

{
  "Type" : "AWS::EKS::Cluster",
  "Properties" : {
      "EncryptionConfig" : [ EncryptionConfig, ... ],
      "Name" : String,
      "ResourcesVpcConfig" : ResourcesVpcConfig,
      "RoleArn" : String,
      "Version" : String
    }
}

YAML

Type: AWS::EKS::Cluster
Properties: 
  EncryptionConfig: 
    - EncryptionConfig
  Name: String
  ResourcesVpcConfig: 
    ResourcesVpcConfig
  RoleArn: String
  Version: String

Properties

EncryptionConfig

The encryption configuration for the cluster.

Required: No

Type: List of EncryptionConfig

Maximum: 1

Update requires: Replacement

Name

The unique name to give to your cluster.

Required: No

Type: String

Minimum: 1

Maximum: 100

Pattern: ^[0-9A-Za-z][A-Za-z0-9\-_]*

Update requires: Replacement

ResourcesVpcConfig

The VPC configuration used by the cluster control plane. Amazon EKS VPC resources have specific requirements to work properly with Kubernetes. For more information, see Cluster VPC Considerations and Cluster Security Group Considerations in the Amazon EKS User Guide. You must specify at least two subnets. You can specify up to five security groups, but we recommend that you use a dedicated security group for your cluster control plane.

Required: Yes

Type: ResourcesVpcConfig

Update requires: Replacement

RoleArn

The Amazon Resource Name (ARN) of the IAM role that provides permissions for Amazon EKS to make calls to other AWS API operations on your behalf. For more information, see Amazon EKS Service IAM Role in the Amazon EKS User Guide .

Required: Yes

Type: String

Update requires: Replacement

Version

The desired Kubernetes version for your cluster. If you don't specify a value here, the latest version available in Amazon EKS is used.

Required: No

Type: String

Update requires: No interruption

Return Values

Ref

When you pass the logical ID of this resource to the intrinsic Ref function, Ref returns the resource name. For example:

{ "Ref": "myCluster" }

For the Amazon EKS cluster myCluster, Ref returns the name of the cluster.

For more information about using the Ref function, see Ref.

Fn::GetAtt

The Fn::GetAtt intrinsic function returns a value for a specified attribute of this type. The following are the available attributes and sample return values.

For more information about using the Fn::GetAtt intrinsic function, see Fn::GetAtt.

Arn

The ARN of the cluster, such as arn:aws:eks:us-west-2:666666666666:cluster/prod.

CertificateAuthorityData

The certificate-authority-data for your cluster.

ClusterSecurityGroupId

The cluster security group that was created by Amazon EKS for the cluster. Managed node groups use this security group for control plane to data plane communication.

This parameter is only returned by Amazon EKS clusters that support managed node groups. For more information, see Managed Node Groups in the Amazon EKS User Guide.

EncryptionConfigKeyArn

Amazon Resource Name (ARN) or alias of the customer master key (CMK).

Endpoint

The endpoint for your Kubernetes API server, such as https://5E1D0CEXAMPLEA591B746AFC5AB30262.yl4.us-west-2.eks.amazonaws.com.

Examples

Create a Cluster

The following example creates an Amazon EKS cluster called prod.

JSON

{
    "Resources": {
        "myCluster": {
            "Type": "AWS::EKS::Cluster",
            "Properties": {
                "Name": "prod",
                "Version": "1.14",
                "RoleArn": "arn:aws:iam::012345678910:role/eks-service-role-AWSServiceRoleForAmazonEKS-EXAMPLEBQ4PI",
                "ResourcesVpcConfig": {
                    "SecurityGroupIds": [
                        "sg-6979fe18"
                    ],
                    "SubnetIds": [
                        "subnet-6782e71e",
                        "subnet-e7e761ac"
                    ]
                }
            }
        }
    }
}

YAML

Resources:
  myCluster:
    Type: 'AWS::EKS::Cluster'
    Properties:
      Name: prod
      Version: '1.14'
      RoleArn: >-
        arn:aws:iam::012345678910:role/eks-service-role-AWSServiceRoleForAmazonEKS-EXAMPLEBQ4PI
      ResourcesVpcConfig:
        SecurityGroupIds:
          - sg-6979fe18
        SubnetIds:
          - subnet-6782e71e
          - subnet-e7e761ac

See Also

• Clusters in the Amazon EKS User Guide .

• CreateCluster in the Amazon EKS API Reference .