Demystifying EKS Authentication and Authorization: A Guide to Strengthening Network Security

Amazon EKS, the managed Kubernetes service by AWS, holds paramount importance in understanding how API server authentication and authorization function. Before delving into the details, let's distinguish between Authentication and Authorization.

Authentication: Ensuring Legitimate Requests

Authentication denotes valid user requests. Kubernetes offers diverse authentication methods, often referred to as "authentication modules" or "authenticators". Every API server request, whether from external sources like kubectl or internal entities like the kubelet on worker nodes, is authenticated.

Authorization: Granting Action Permissions

Once the …

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