AWS::EKS::Cluster - AWS CloudFormation


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 nodes (for example, to support kubectl exec, logs, and proxy data flows).

Amazon EKS 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 several minutes. After you create an Amazon EKS cluster, you must configure your Kubernetes tooling to communicate with the API server and launch nodes into your cluster. For more information, see Managing Cluster Authentication and Launching Amazon EKS nodes in the Amazon EKS User Guide.


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


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



The encryption configuration for the cluster.

Required: No

Type: List of EncryptionConfig

Maximum: 1

Update requires: Replacement


The Kubernetes network configuration for the cluster.

Required: No

Type: KubernetesNetworkConfig

Update requires: Replacement


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


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


The Amazon Resource Name (ARN) of the IAM role that provides permissions for the Kubernetes control plane to make calls to 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


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


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.


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.


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


The certificate-authority-data for your cluster.


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.


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


The endpoint for your Kubernetes API server, such as


The issuer URL for the cluster's OIDC identity provider, such as If you need to remove https:// from this output value, you can include the following code in your template.

!Select [1, !Split ["//", !GetAtt EKSCluster.OpenIdConnectIssuerUrl]]


Create a cluster

The following example creates an Amazon EKS cluster named prod.


{ "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" ] } } } } }


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