Day-9 🔥 Master Ingress, PV/PVC & Probes | Fix 404, Pod Restarts & Data Loss

Description

👋 Welcome back to Tech With Diwana — this is Day-9 of the Kubernetes Zero to Hero Series! In today’s session, we’ll go from networking to self-healing — everything that makes Kubernetes production-ready. 🚀 Topics Covered: 🌐 Cluster Networking (CNI) – How Pods communicate internally across nodes. 🚪 Ingress & NGINX Ingress – Route multiple apps using one domain name. 💾 Persistent Volumes (PV) & Persistent Volume Claims (PVC) – Store your app data permanently. ❤️ Liveness & Readiness Probes – Make your Pods automatically restart and self-heal. 💡 Real-World Fixes You’ll Learn: ❌ Fix 404 errors in Ingress. 🔁 Stop Pods restarting repeatedly with proper probes. 🧹 Prevent data loss after Pod deletion with PV/PVC. 🔧 All hands-on demos done in Minikube with --dry-run=client -o yaml workflow for pro YAML practice. 📂 Get full GitHub repo: https://github.com/techwithdiwana/kubernetes-zero-to-hero/tree/main/day-9-CNI%20Networking%2C%20Ingress%20%26%20NGINX%20Ingress%2C%20Persistent%20Volumes%20%26%20PVC%2C%20and%20Liveness%20%26%20Readiness%20Probes 💙 If you find this helpful, Like, Share & Subscribe to Tech With Diwana — your one Like motivates me to keep creating the best DevOps content for you! 🙏 #Kubernetes #DevOps #TechWithDiwana #KubernetesIngress #PersistentVolume #KubernetesProbes #Minikube #KubernetesNetworking #KubernetesForBeginners #DevOpsProjects | ⏰ Time | 🎬 Segment | 🎙️ Description | | ----------------: | ------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------- | | **0:00 – 0:40** | ⚡ **Hook + 5 Conceptual Interview Questions** | Quick fire: “Why 404 in Ingress?”, “Why Pods restart?”, “Why data lost?”, “Why Service not responding?”, “How multiple apps under one domain?” | | **0:41 – 1:00** | 💥 **Intro & CTA** | “Welcome to Tech With Diwana — hit Like, Share, Subscribe!” | | **1:01 – 3:30** | 🌐 **Cluster Networking (CNI)** | Explain Pod IPs, flat networking, CNI plugins. Show `kubectl get pods -A -o wide`. | | **3:31 – 10:30** | 🚪 **Ingress & NGINX Ingress Hands-On** | Enable addon → Deploy app1/nginx + app2/httpd → expose services → create Ingress (dry-run → apply) → test in browser. | | **10:31 – 11:00** | 💡 **Mini Recap:** | “Ingress routes multiple services via one IP.” | | **11:01 – 17:00** | 💾 **Persistent Volumes & PVC (Storage)** | Explain ephemeral vs persistent → create PV/PVC (heredoc dry-run) → attach to Pod → test data persistence. | | **17:01 – 18:00** | 🧠 **Real Scenario Connect** | “This solves the interview case: your uploads vanished because you didn’t use PVC.” | | **18:01 – 23:00** | ❤️ **Liveness & Readiness Probes (Self-Healing)** | Explain concept → create probe-demo (dry-run → add probes → apply) → simulate failure → show auto-restart. | | **23:01 – 24:00** | 🔍 **Verification Checklist** | Run: `kubectl get pv,pvc`, `kubectl get pods -A -o wide`, `kubectl describe pod probe-demo`. | | **24:01 – 25:00** | 🎯 **Interview Q&A Recap** | Revisit 5 questions & answer each in one line (Ingress 404 → host/path; Pod restart → Liveness; etc.). | | **25:01 – 26:00** | 💙 **Outro + Motivation** | “You just fixed 404s, restarts & data loss — You’re now production-ready! Like, Share & Subscribe to Tech With Diwana.” |