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Getting Started with DevOps
A complete beginner's guide to DevOps — what it is, the key tools, the CI/CD pipeline concept, and how to build your first Jenkins pipeline from scratch.
Read & Explore CourseDocker in 30 Minutes
Learn Docker from zero — install Docker, build your first image, run containers, understand volumes and networking, and write a Dockerfile for a Node.js app.
Read & Explore CourseMERN Stack: Build Your First App
Step-by-step guide to building a full-stack task manager with React frontend, Express/Node.js backend, MongoDB database, and JWT authentication.
Read & Explore CourseSpring Boot REST API: Zero to Hero
Build a complete REST API with Spring Boot — project setup, CRUD operations, Spring Data JPA, validation, exception handling and Postman testing.
Read & Explore CourseElasticsearch: Search & Aggregations
Master Elasticsearch — indexing documents, full-text search, Query DSL, term queries, match queries, bool queries, and powerful aggregations for analytics.
Read & Explore CourseKubernetes for Beginners
Deploy your first application to Kubernetes — understand pods, deployments, services, and use kubectl to manage your cluster with hands-on examples.
Read & Explore CoursePython for Machine Learning
Introduction to ML with Python — NumPy, Pandas, Matplotlib, Scikit-learn, and building your first classification and regression models with real datasets.
Read & Explore CourseLinux Command Line Essentials
Master the Linux command line — file system navigation, permissions, process management, shell scripting, cron jobs, and system monitoring commands.
Read & Explore CourseTerraform: Infrastructure as Code
Build AWS infrastructure with Terraform from scratch — providers, resources, variables, outputs, state management, and modular Terraform code organisation.
Read & Explore CourseQuick reference guides for the most-used commands and concepts — bookmark these before your next interview.
Linux Commands
Essential Linux commands for DevOps — file management, permissions, process control, networking, cron, systemd and shell scripting patterns.
Docker Commands
Complete Docker CLI reference — image management, container lifecycle, networking, volumes, Docker Compose and Dockerfile instructions.
kubectl Commands
Kubernetes CLI quick reference — managing pods, deployments, services, configmaps, secrets, namespaces, logs and rollout operations.
Git Commands
Git workflow reference — init, clone, staging, commits, branches, merging, rebasing, stashing, remote operations, and fixing common mistakes.
Elasticsearch Query DSL
Quick reference for Elasticsearch REST API queries — match, term, bool, range, aggregations, mapping types and index management operations.
Spring Boot Annotations
Complete guide to Spring Boot annotations — stereotype, request mapping, data binding, validation, security, testing and configuration annotations.
Hands-on exercises — each lab gives you a task, the expected command, and a detailed explanation.
Run Your First Docker Container
Beginnerdocker pull downloads the image. -d runs
detached (background). -p 8080:80 maps host port 8080 to container port 80.
--name gives the container a friendly name.
docker ps to see running containers.
Use docker stop my-nginx to stop it.Write a Dockerfile for a Node.js App
Beginnernode:18-alpine (not
node:18) to keep the image small — alpine base images are ~5MB vs ~900MB.
Deploy a Pod to Kubernetes
Intermediatekubectl get pods -w to watch pods
come up in real time.Build a Jenkins CI Pipeline
IntermediateProvision AWS EC2 with Terraform
Intermediateterraform destroy after the lab to
avoid AWS charges.Elasticsearch: Index & Search
BeginnerJump directly to any topic — courses, roadmaps, interview prep and more.
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