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Series
In this series, I will explain about DevOps tools
1. Difference between Docker and Kubernetes Docker → Builds and runs containers.Kubernetes → Orchestrates containers across multiple nodes. Key points: Docker = container runtime. Kubernetes = container orchestration tool. Kubernetes provides auto...
In this session, we learn how to monitor a Kubernetes cluster using Prometheus and Grafana.This is not just theory — there is a GitHub repository containing all installation commands and demo steps.The repo will also be enhanced later with advanced K...
1. What is a ConfigMap in Kubernetes? A ConfigMap is used to store non-sensitive configuration data that your application needs — such as: Database port Connection type Any general configuration values In normal applications (non-Kubernetes), de...
Kubernetes normally supports built-in resources like: Deployment Service Pod ConfigMap Secret Ingress These are called native resources. Sometimes companies (Istio, ArgoCD, Prometheus Operator, Kyverno, etc.) want to add new features that Kub...
1. Why Kubernetes Services Are Needed When a Pod is created in Kubernetes, it receives a dynamic IP address.If the Pod dies and restarts, its IP changes.So other Pods (like checkout → payments) cannot rely on Pod IP because it changes, creating issue...
1. Why People Find Kubernetes Ingress Difficult Two reasons: They don’t understand why Ingress is required. Practical setup fails on Minikube or local clusters because Ingress controller is missing. 2. Before Ingress (Before Kubernetes v1.1) Peo...