50 Kubernetes Concepts Every Devops Engineer Should Know Free Pdf =link= Jun 2026

How components communicate with each other and the outside world.

: Control communication between pods and services.

Decoupling application code from configuration and persistent data makes your applications portable and resilient. How components communicate with each other and the

Injects ConfigMap or Secret data directly into the container processes at runtime. 36. Downward API

: The management layer that makes global decisions about the cluster (e.g., scheduling). Injects ConfigMap or Secret data directly into the

A mechanism to isolate groups of resources within a single cluster, useful for dividing environments (e.g., development, staging, production) or teams.

Maps the service to the contents of the externalName field (e.g., foo.bar.example.com ), returning a CNAME record. A mechanism to isolate groups of resources within

Start with the fundamentals—control plane components, pods, deployments, services—and gradually work your way up to advanced topics like operators, CRDs, and custom controllers. Each concept builds upon the previous ones, ensuring you develop practical, production-ready skills.