Skip to main content

aws_eks_cluster resource

[edit on GitHub]

Use the aws_eks_cluster InSpec audit resource to test properties of a single AWS Elastic Container Service for Kubernetes.


An aws_eks_cluster resource block declares the tests for a single EKS Cluster by Cluster name.

describe aws_eks_cluster('my-eks') do
  it { should exist }

describe aws_eks_cluster(cluster_name: 'my-eks') do
  it { should exist }


cluster_name (required)

This resource requires a single parameter, the EKS Cluster Name. This can be passed either as a string or as a cluster_name: 'value' key-value entry in a hash.

See also the AWS documentation on EKS Clusters.


arnThe Amazon Resource Name (ARN) of the cluster.
nameThe name of the cluster.
endpointThe endpoint for your Kubernetes API server.
statusThe current status of the cluster.
versionThe Kubernetes server version for the cluster.
certificate_authorityThe certificate-authority-data for your cluster.
subnets_countThe number of subnets associated with your cluster.
subnet_idsThe subnets associated with your cluster.
security_groups_countThe count of security groups associated with your cluster.
security_group_idsThe security groups associated with the cross-account elastic network interfaces that are used to allow communication between your worker nodes and the Kubernetes control plane.
role_arnThe 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.
vpc_idThe VPC associated with your cluster.
created_atThe Unix epoch timestamp in seconds for when the cluster was created.
creatingBoolean indicating whether or not the state of the cluster is CREATING.
activeBoolean indicating whether or not the state of the cluster is ACTIVE.
failedBoolean indicating whether or not the state of the cluster is FAILED.
deletingBoolean indicating whether or not the state of the cluster is DELETING.
tagsCluster tags


Test that an EKS Cluster has at least 2 subnets

describe aws_eks_cluster('my-cluster') do
  its('subnets_count') { should be > 1 }

Ensure a Cluster has the correct status.

describe aws_eks_cluster(cluster_name: 'my-eks') do
  its('status') { should eq 'ACTIVE' }

Ensure that the EKS Cluster is on the correct VPC

describe aws_eks_cluster('my-cluster') do
  its('vpc_id') { should eq 'vpc-12345678' }

Ensure the EKS Cluster is using the correct IAM Role.

describe aws_eks_cluster('my-cluster') do
  its('role_arn') { should cmp 'rn:aws:iam::012345678910:role/eks-service-role-AWSServiceRoleForAmazonEKS-J7ONKE3BQ4PI' }

Integrate with other resources

Use a combination of InSpec AWS resources to ensure your EKS Cluster does not use the Default VPC.

# Find the default Security Group for our VPC
cluster_vpc = aws_eks_cluster(cluster_name: 'my-cluster').vpc_id
default_sg  = aws_security_group(group_name: 'default', vpc_id: cluster_vpc)

# Ensure we are not using the default Security Group
describe aws_eks_cluster(cluster_name: 'my-cluster') do
  its('security_group_ids') { should_not include default_security_group.group_id }


This InSpec audit resource has no special matchers. For a full list of available matchers, please visit our Universal Matchers page.


The control will pass if the describe returns at least one result.

Use should_not to test the entity should not exist.

describe aws_eks_cluster('AnExistingCluster') do
  it { should exist }

describe aws_eks_cluster('ANonExistentCluster') do
  it { should_not exist }

AWS Permissions

Your Principal will need the eks:DescribeCluster action set to Allow.

You can find detailed documentation at Amazon EKS IAM Policies, Roles, and Permissions The documentation for EKS actions is at Policy Structure