DevOps Full Course for Beginners 2025 | Kubernetes: Deployments, Services, Ingress & PVC | Part

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00:00 Introduction
06:45 Docker - Container to container communication
22:10 NGINX
45:38 Kubernetes declarative
01:32:06 Configuration and secrets in kubernetes
01:56:37 Ingress
02:48:55 Storage and persistence in kubernetes

Welcome to Part 3 of the DevOps Full Course 2025 🚀. In this video, we’re moving beyond the basics and focusing on real-world, local-first DevOps workflows before deploying to the cloud.

📝 What You’ll Learn in Part 3 :

Docker networking refresher → container-to-container communication + Nginx reverse proxy demo

Imperative vs Declarative → why declarative is standard, Pods → ReplicaSets → Deployments → Services

Resource management → Namespaces for dev/prod, labels & selectors for mapping Services to Pods

Configurations → ConfigMaps for app settings, Secrets for MongoDB URI/password, inject into backend

Ingress → install NGINX ingress controller, path-based routing (/ → frontend, /api → backend), expose MERN app

Storage & persistence → solve emptyDir data loss with PersistentVolumeClaims, attach PVC to Mongo, demo persistence across pod restarts

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