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.

For additional information, including details on parameters and properties, see the AWS documentation on EKS Clusters.

Installation

This resource is available in the Chef InSpec AWS resource pack.

See the Chef InSpec documentation on cloud platforms for information on configuring your AWS environment for InSpec and creating an InSpec profile that uses the InSpec AWS resource pack.

Syntax

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 }
end

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

Parameters

cluster_name (required if resource_data not provided)

The name of the EKS cluster. This can be passed either as a string or as a cluster_name: 'value' key-value entry in a hash.

resource_data (required if cluster_name not provided)

A hash or the cached AWS response passed from the aws_eks_clusters resource.

Properties

arn

The Amazon Resource Name (ARN) of the cluster.

name

The name of the cluster.

endpoint

The endpoint for your Kubernetes API server.

status

The current status of the cluster.

version

The Kubernetes server version for the cluster.

certificate_authority

The certificate-authority-data for your cluster.

subnets_count

The number of subnets associated with your cluster.

subnet_ids

The subnets associated with your cluster.

security_groups_count

The count of security groups associated with your cluster.

security_group_ids

The 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_arn

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.

vpc_id

The VPC associated with your cluster.

created_at

The Unix epoch timestamp in seconds for when the cluster was created.

creating

Boolean indicating whether or not the state of the cluster is CREATING.

active

Boolean indicating whether or not the state of the cluster is ACTIVE.

failed

Boolean indicating whether or not the state of the cluster is FAILED.

deleting

Boolean indicating whether or not the state of the cluster is DELETING.

tags

Cluster tags.

enabled_logging_types

Return list of enabled logging types.

disabled_logging_types

Return list of disabled logging types.

Examples

Test that an EKS Cluster has at least 2 subnets.

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

Ensure a Cluster has the correct status.

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

Ensure that the EKS Cluster is on the correct VPC.

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

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' }
end

Ensure that the EKS Cluster is on the correct VPC from cached resources.

resource = aws_eks_clusters.where(cluster_name: 'my-eks')
describe aws_eks_cluster(resource_data: resource) do
  its('vpc_id') { should eq 'vpc-12345678' }
end

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 }
end

Matchers

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

exist

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 }
end

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

AWS Permissions

Your Principal will need the EKS:Client:DescribeClusterResponse action with Effect 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