Kubernetes Hardening Tutorial Part 3: Authn, Authz, Logging & Auditing

In the final installment of a Kubernetes security tutorial, the focus shifts to authentication, authorization, logging, and auditing within an AWS EKS environment. By leveraging Infrastructure as Code (IaC) with Terraform, users can create an EKS cluster while following best practices, such as using a dedicated IAM role for cluster creation and enabling audit logging for security monitoring. The guide emphasizes the importance of using private endpoints for production clusters to minimize exposure and outlines the risks associated with service account tokens, underscoring the need for strict access controls. For user authentication, it recommends editing the aws-auth ConfigMap to manage access through IAM roles, enhancing security by mapping roles to Kubernetes RBAC groups. The tutorial also introduces tools like kubectl-who-can and rbac-lookup, which assist in auditing cluster access and permissions, reinforcing the necessity of regular audits as access requirements evolve over time. Overall, the tutorial offers a comprehensive guide to fortifying Kubernetes clusters against potential security threats.

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