Docker Basics MCQ
Test your Docker fundamentals with 30 multiple-choice questions covering images, containers, Dockerfile, networking, volumes, and Docker …
Jun 28, 2026
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Devops
103 articles
DevOps Starter
First steps into DevOps — Linux basics, Git, Docker, and your first CI pipeline.
Jun 20, 2026
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DevOps Engineer Path
Go beyond the basics — container orchestration, infrastructure as code, advanced CI/CD pipelines, and production-grade monitoring.
Jun 20, 2026
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01-local-kubernetes-setup-options
A complete guide to understanding local Kubernetes options — Minikube, KIND, Docker Desktop, and MicroK8s — with detailed comparisons, …
May 27, 2026
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Why Kubernetes required: Everything You Need to Know
In this article, you will understand what problem comes in EC2 setup and how kubernetes will overcome all these problems.
Apr 23, 2026
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Jenkins interview questions and answers and Answers - Part 01
15 real-world Jenkins scenario-based interview questions and answers covering architecture, pipelines, shared libraries, agents, security, …
Apr 16, 2026
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Git Interview Questions and Answers Part 01
30 real-world Git scenario-based interview questions and answers covering branching strategies, merge/rebase, undoing changes, conflict …
Apr 16, 2026
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How to Install and Configure Docker on Ubuntu 24.04
A complete step-by-step guide to installing Docker on Ubuntu 24.04 LTS — covering installation, post-install setup, Docker Compose, firewall …
Apr 8, 2026
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How to Install and configure Nginx on Ubuntu 24 04
A complete step-by-step guide to installing Nginx on Ubuntu 24.04 LTS — covering installation, firewall setup, virtual hosts, SSL with Let's …
Apr 6, 2026
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12.16 Sets in DevOps
Five places sets are the natural fit in infrastructure code -- deduplicating IP addresses from logs, comparing installed vs. required …
Jan 20, 2026
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11.12 Tuples in DevOps
Reading and writing tuples via plain text and CSV, plus five real infrastructure patterns where tuples are the right fit specifically …
Jan 20, 2026
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10.15 Lists in DevOps
Lists as the natural in-memory shape of file and log contents, plus real infrastructure patterns -- server inventories, filtering Amazon EC2 …
Jan 20, 2026
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9.12 Strings in DevOps and AWS
The standard raw-text-to-structured-fields pipeline applied to real infrastructure text -- Apache/Nginx/syslog parsing, Amazon Resource …
Jan 20, 2026
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8.13 Type Conversion in DevOps
Where type conversion shows up constantly in real infrastructure scripts — environment variables, config files, AWS API responses, log …
Jan 20, 2026
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7.16 DevOps Use Cases
Real-world operator patterns from DevOps scripts — CPU/disk threshold checks, log-level filtering, HTTP status classification, AWS resource …
Jan 20, 2026
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6.11 Variables in DevOps
How configuration variables, environment variables, secrets, AWS credentials, and Terraform variables are managed in real DevOps Python …
Jan 20, 2026
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5.14 Data Types in DevOps
Where Python's built-in data types show up in real infrastructure tooling — configuration data, JSON, API responses, AWS/boto3 resources, …
Jan 20, 2026
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4.18 Real-World DevOps Examples
Correct Python syntax applied in realistic DevOps scripts — a configuration module, a log-cleanup automation script, a log-processing …
Jan 20, 2026
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Linux for DevOps
How the previous 15 Linux fundamentals directly power containers, Kubernetes, CI/CD, and infrastructure automation — the concepts that …
Jan 20, 2026
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Kubernetes Features
A comprehensive walkthrough of Kubernetes' core features — from self-healing and auto-scaling to rolling updates, service discovery, storage …
Jan 20, 2026
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Module 6 - Kubernetes Storage
A complete guide to Kubernetes Storage — covering Volumes, Persistent Volumes, PVCs, StorageClasses, StatefulSets, Cloud Storage, CSI, …
Jan 20, 2026
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06-Exploring-kubectl-commands
Learn what kubectl is, how it works, and master the essential commands, context configuration, aliases, and shortcuts to interact with your …
Jan 20, 2026
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05-Install-minikube-on-Mac
Learn what Minikube is and how to install it on Windows, Mac, and Linux to run a local Kubernetes cluster for development and learning.
Jan 20, 2026
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04-Install-minikube-on-Linux
Learn what Minikube is and how to install it on Windows, Mac, and Linux to run a local Kubernetes cluster for development and learning.
Jan 20, 2026
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Write and Run Your First Python Program
How to write a first Python program and run it on Windows, macOS, and Linux — creating the file, the python vs python3 vs py command …
Jan 20, 2026
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LoadBalancer Service
Learn what a LoadBalancer Service is in Kubernetes, how it exposes applications externally, how cloud load balancers work with Kubernetes …
Jan 20, 2026
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03-Install-minikube-on-Windows
Learn what Minikube is and how to install it on Windows, Mac, and Linux to run a local Kubernetes cluster for development and learning.
Jan 20, 2026
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03-Deployment-concepts-with-real-examples
Understand core Kubernetes building blocks — Deployment — with real-world examples, YAML manifests, and hands-on troubleshooting scenarios.
Jan 20, 2026
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NodePort Service
Learn what a NodePort Service is in Kubernetes, how it works, and how to expose applications externally using worker node IP addresses and …
Jan 20, 2026
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Installation of Python
How to install Python on Windows, Linux, and macOS, choosing an IDE, the four ways to run Python code, the CPython execution pipeline, …
Jan 20, 2026
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02-What-is-Minikube
Learn what Minikube is and how to install it on Windows, Mac, and Linux to run a local Kubernetes cluster for development and learning.
Jan 20, 2026
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02 - Replicaset concepts with real examples
Understand core Kubernetes building blocks — Pod, ReplicaSet, and Deployment — with real-world examples, YAML manifests, and hands-on …
Jan 20, 2026
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Linux MCQ — Basics to Advanced
40 multiple-choice questions covering the Linux kernel, filesystem, permissions, processes, boot process, systemd, networking, storage, and …
Jan 20, 2026
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Kubernetes Secrets
A complete guide to Kubernetes Secrets — what they are, why they exist, how they work internally, where they are used, and how to …
Jan 20, 2026
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Introduction to Python
What Python is, its history, key features, why it's worth learning, where it's applied in practice, and how it compares to Bash, Go, and …
Jan 20, 2026
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Introduction to Linux
What Linux really is, how it compares to Unix and Windows, where it came from, the major distributions you'll actually run into, and why it …
Jan 20, 2026
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ConfigMap
Learn what Kubernetes ConfigMap is, why it is used, how it works, where it is used, and how to troubleshoot ConfigMap-related pod issues …
Jan 20, 2026
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ClusterIP Service
Learn what a ClusterIP Service is in Kubernetes, how it works, and how to expose applications internally within the cluster for secure …
Jan 20, 2026
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01 - Kubernetes Core Concept - Pod
Understand core Kubernetes building blocks Pod with real-world examples, YAML manifests, and hands-on troubleshooting scenarios.
Jan 20, 2026
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What is Container Orchestration?
Learn what container orchestration means, why it is essential for managing containers at scale, and how Kubernetes implements orchestration …
Jan 19, 2026
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Problems with Traditional Deployments
Deep dive into the limitations of physical server, virtual machine, and early deployment strategies that drove the need for container-based …
Jan 17, 2026
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Why Kubernetes?
Explore the real-world problems that led to the creation of Kubernetes, and understand why it has become the go-to solution for managing …
Jan 16, 2026
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Kubernetes
Master Kubernetes from absolute beginner to production-ready. Learn pods, deployments, services, networking, storage, and real-world project …
Jan 15, 2026
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Git & GitHub for Absolute Beginners
A complete, hands-on Git and GitHub course - from zero to version control mastery. Learn Git fundamentals, branching, merging, pull …
Jan 15, 2026
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Docker for absolute beginners
A complete, hands-on Docker course - from zero to production. Learn containers, images, volumes, networking, Docker Compose, and Swarm with …
Jan 15, 2026
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What is Kubernetes?
Understand what Kubernetes is, where it came from, and why it has become the industry standard for managing containerized applications at …
Jan 15, 2026
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Module Introduction
Understand what Kubernetes is, where it came from, and why it has become the industry standard for managing containerized applications at …
Jan 15, 2026
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Course Introduction
Overview of the Kubernetes course — what you'll learn, who it's for, and the full module breakdown.
Jan 15, 2026
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01-Kubernetes Architecture Deep Dive
Understand what Docker is, why it exists, and how it solves the 'it works on my machine' problem with containerization.
Jan 15, 2026
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Terraform Interview Questions & Answers (2026) Part 02
45+ Terraform interview questions and answers covering state management, modules, lifecycle, drift detection, and advanced scenarios — Basic …
Apr 26, 2025
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Terraform Interview Questions & Answers (2026) Part 01
50+ Terraform interview questions and answers covering state management, modules, lifecycle, drift detection, and advanced scenarios — Basic …
Apr 26, 2025
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Prometheus & Grafana Interview Questions & Answers (2026) Part 01
30+ Prometheus and Grafana interview questions and answers covering monitoring, alerting, PromQL, exporters, dashboards, Alertmanager, …
Apr 26, 2025
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AWS Cloudwatch Interview Questions & Answers (2026) Part 01
50+ Logging and Monitoring interview questions and answers covering observability, metrics, alerting, Prometheus, Grafana, ELK, CloudWatch, …
Apr 26, 2025
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Docker Interview Questions & Answers Part 02
Docker interview questions about architecture, troubleshooting, image security, operations, and deployment rollbacks.
Apr 26, 2025
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CI/CD Interview Questions & Answers
40+ CI/CD and DevOps interview questions covering pipelines, Jenkins, GitOps, deployment strategies, monitoring, and SRE — Basic to …
Apr 26, 2025
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Interview Q&A Part 03
40+ Linux interview questions and answers covering processes, file system, permissions, services, and troubleshooting — Basic to Advanced.
Apr 26, 2025
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Interview Q&A Part 02
40+ Linux interview questions and answers covering processes, file system, permissions, services, and troubleshooting — Basic to Advanced.
Apr 26, 2025
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Interview Q&A Part 01
40+ Linux interview questions and answers covering processes, file system, permissions, services, and troubleshooting — Basic to Advanced.
Apr 26, 2025
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DevOps Engineer Learning Path
A complete roadmap to becoming a DevOps Engineer. Master CI/CD pipelines, Docker, Kubernetes, Terraform, monitoring, and GitOps — from zero …
Jan 22, 2025
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Migrate from ECS Fargate to EKS With Zero Downtime
Walk through a phased migration strategy from ECS Fargate to Amazon EKS using the Strangler Fig pattern, Route53 weighted routing, and …
Jan 20, 2025
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Implement AWS Control Tower for a 20-Account Organization
Set up AWS Control Tower with Account Factory, custom guardrails via SCPs, account vending automation with AFT, and developer self-service …
Jan 20, 2025
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Handling Terraform State Drift in Production
AWS resources changed outside of Terraform — via Console, CLI, or another tool. Detect the drift, reconcile state, and prevent it from …
Jan 20, 2025
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Terraform Plan Takes 45 Minutes — How to Fix It at Scale
Your team has 500+ Terraform resources and every plan takes 45 minutes, blocking deployments. Diagnose the root cause and implement state …
Jan 20, 2025
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Migrate a Java Monolith From On-Premises to AWS With Minimal Downtime
Plan and execute a phased migration of a Java on-premises monolith to AWS using re-platform strategy, AWS DMS for database migration, and a …
Jan 20, 2025
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Migrate from ECS Fargate to EKS With Zero Downtime
Walk through a phased migration strategy from ECS Fargate to Amazon EKS using the Strangler Fig pattern, Route53 weighted routing, and …
Jan 20, 2025
Read more
Implement AWS Control Tower for a 20-Account Organization
Set up AWS Control Tower with Account Factory, custom guardrails via SCPs, account vending automation with AFT, and developer self-service …
Jan 20, 2025
Read more
Handling Terraform State Drift in Production
AWS resources changed outside of Terraform — via Console, CLI, or another tool. Detect the drift, reconcile state, and prevent it from …
Jan 20, 2025
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Build a Zero-Downtime Deployment Pipeline for Microservices on EKS
Design a complete CI/CD pipeline for a microservices application on EKS with canary deployments, automated rollbacks, and zero downtime.
Jan 20, 2025
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Terraform Plan Takes 45 Minutes — How to Fix It at Scale
Your team has 500+ Terraform resources and every plan takes 45 minutes, blocking deployments. Diagnose the root cause and implement state …
Jan 20, 2025
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Build a Zero-Downtime Deployment Pipeline for Microservices on EKS
Design a complete CI/CD pipeline for a microservices application on EKS with canary deployments, automated rollbacks, and zero downtime.
Jan 20, 2025
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AWS Interview Questions & Answers
AWS interview questions and answers covering EC2, S3, IAM, VPC, ALB, RDS, Lambda, EBS, EKS, and more - Basic to Advanced.
Jan 1, 0001
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Kubernetes Interview Questions & Answers — Scenarios & Troubleshooting
Real-world Kubernetes troubleshooting scenarios covering CrashLoopBackOff, Pending pods, node issues, connectivity failures, performance …
Jan 1, 0001
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Kubernetes Interview Questions & Answers — Advanced Kubernetes
Advanced Kubernetes interview questions on Helm, Operators and CRDs, multi-cluster and multi-tenant architectures, service mesh, cluster …
Jan 1, 0001
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Kubernetes Interview Questions & Answers — Networking & Security
Kubernetes interview questions covering Services, Ingress, DNS, CNI, NetworkPolicies, RBAC, ServiceAccounts, Secrets, Pod Security, TLS, and …
Jan 1, 0001
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Kubernetes Interview Questions & Answers — Compute & Storage
Kubernetes interview questions on scheduling, resource requests/limits, StatefulSets, DaemonSets, Jobs and CronJobs, Volumes, …
Jan 1, 0001
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Kubernetes Interview Questions & Answers - Fundamentals
Core Kubernetes fundamentals - clusters, control plane components (kube-apiserver, etcd, scheduler, controller-manager, admission control), …
Jan 1, 0001
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12. Security and Best Practices
Review image inputs, runtime permissions, secrets, and release practices.
Jan 1, 0001
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11. Logs, Health, and Resources
Inspect an application's process, logs, and resource use.
Jan 1, 0001
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10. Docker Compose
Describe and manage a local application using a Compose file.
Jan 1, 0001
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9. Volumes and Bind Mounts
Persist application data beyond the lifetime of a container.
Jan 1, 0001
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8. Networking and Ports
Distinguish host ports, container ports, and container-to-container networking.
Jan 1, 0001
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7. Build Context and Cache
Understand what a build can copy and how to keep rebuilds efficient.
Jan 1, 0001
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6. Dockerfile Basics
Build a small web image and distinguish build-time and runtime instructions.
Jan 1, 0001
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5. Images and Registries
Work with image names, tags, digests, pulls, and local metadata.
Jan 1, 0001
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Run a Compose Project
Manage two services and verify service-name networking.
Jan 1, 0001
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4. Container Lifecycle
Create, start, inspect, stop, and remove a container.
Jan 1, 0001
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Persist Container Data
Prove that data in a named volume survives container removal.
Jan 1, 0001
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Data Disappears After Container Recreation
Diagnose storage mounted at the wrong path or omitted during replacement.
Jan 1, 0001
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Check a Container's Web Response
Combine container state with an HTTP check in a Bash script.
Jan 1, 0001
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3. Docker Architecture
Trace a Docker command through the client, daemon, registry, and runtime.
Jan 1, 0001
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Python for AWS & DevOps - Interview Questions & Answers
30+ Python interview questions for AWS and DevOps roles - boto3, Lambda, S3, automation scripting, CI/CD, Docker SDK, Kubernetes client, …
Jan 1, 0001
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Build an Image with an Explicit Tag
Automate a local build with input checks and an explicit release tag.
Jan 1, 0001
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Build a Custom Image
Package a static page, rebuild it, and compare versions.
Jan 1, 0001
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A Running Container Is Unreachable
Separate application binding, published ports, and network connectivity.
Jan 1, 0001
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2. Installation and Verification
Prepare Docker Engine or Desktop and verify the CLI, daemon, and Compose.
Jan 1, 0001
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Run a Web Container
Practice container lifecycle, port publishing, and logs.
Jan 1, 0001
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Python Roadmap
Learn Python for DevOps and cloud automation through clear milestones, practical labs, and interview revision.
Jan 1, 0001
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Python Interview Questions & Answers
Python interview questions covering data types, OOP, decorators, generators, asyncio, memory management, and common libraries — Basic to …
Jan 1, 0001
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Git Roadmap
A practical Git roadmap for daily development, team collaboration, CI/CD, troubleshooting, and DevOps interviews.
Jan 1, 0001
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Docker Roadmap
A practical roadmap for learning Docker for DevOps, cloud automation, interviews, and production scripting.
Jan 1, 0001
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Container Status Report
Create a read-only Bash report of container state.
Jan 1, 0001
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A Container Exits Immediately
Diagnose a short-lived main process or startup failure.
Jan 1, 0001
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1. Introduction to Docker
Understand containers, images, and how Docker fits into DevOps.
Jan 1, 0001
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