Technology

This guide explains how Persistent Volumes and Persistent Volume Claims work together in Kubernetes and shows how to reference a PVC inside a Pod definition. It also covers access modes and the difference between static and dynamic provisioning.

Configure HTTP basic authentication on a kubeadm-managed Kubernetes cluster using a CSV credentials file. Covers mounting the file into kube-apiserver, defining RBAC roles, and verifying access with curl.

An in-depth overview of Linux capabilities and how they govern privilege inside Docker containers and Kubernetes pods. Covers capability sets, file capabilities, bounding sets, securebits, and user-namespace interactions.

Learn how Kubernetes administrators can verify permissions and impersonate other users using kubectl auth can-i and the –as flag.

Kubectx and kubens are lightweight CLI tools that simplify switching between Kubernetes clusters and namespaces. This guide covers installation and basic usage for both tools.

A practical checklist covering X.509 certificate requirements for Kubernetes nodes, users, and the API server. Includes deployment methods, cert-manager workflows, and Extended Key Usage configuration.