🔧 Headless Services, StatefulSets, Volumes, PV/PVC, Databases, and Production Architecture

(What Kubernetes really does, what it does NOT do, and what DevOps engineers must own)







PART 1 — THE MOST IMPORTANT QUESTION





“What should live inside a pod, and what should NOT?”


This single question separates junior from senior DevOps engineers.




A pod is:



a runtime environment

temporary
replaceable
stateless...