Don’t scroll randomly. Pick a track.
There are over a hundred articles below, grouped into four tracks — DevOps, Cloud, Programming, and Markets. The Start Here page tells you exactly which to open first.
Take me there →The full archive
Every article I have published — on Cloud, DevOps, Python, Linux, Kubernetes, markets, and tech careers. Use the filter below if you know what you are looking for. Otherwise, the Start Here page is a friendlier entry point.
🔍
No articles found for ""
Try a different keyword or clear the search.
Kubernetes Full Tutorial
From zero to production — 12 parts
Part 1 — Why Kubernetes? The Problem It Solves
Understand why Kubernetes was created, what problems it solves over plain Docker.
Part 2 — Architecture: Nodes, Pods, Control Plane
Master Kubernetes architecture — control plane, worker nodes, and how they communicate.
Part 3 — Pods: The Smallest Deployable Unit
Pods, multi-container pods, pod lifecycle, resource limits, and health probes.
Part 4 — Deployments and Rolling Updates
Deploy apps with zero downtime using Kubernetes Deployments and rollout strategies.
Part 5 — Services and Networking
ClusterIP, NodePort, LoadBalancer services and how Kubernetes networking works.
Part 6 — ConfigMaps and Secrets
Manage configuration and sensitive data in Kubernetes using ConfigMaps and Secrets.
Part 7 — Persistent Storage and Volumes
PersistentVolumes, PVCs, StorageClasses, and stateful storage in Kubernetes.
Part 8 — Ingress and Load Balancing
Route external HTTP/HTTPS traffic to services using Ingress controllers.
Part 9 — Autoscaling and Resource Management
HPA, VPA, Cluster Autoscaler, and resource quotas for production clusters.
Part 10 — RBAC and Security
Role-Based Access Control, ServiceAccounts, NetworkPolicies, and K8s security.
Part 11 — Monitoring with Prometheus and Grafana
Set up Prometheus and Grafana for Kubernetes cluster monitoring and alerting.
Part 12 — Production Kubernetes Project
Deploy a complete microservices application on Kubernetes with CI/CD and monitoring.
Docker Full Tutorial
Containers from basics to production — 12 parts
Part 1 — Why Docker Exists
Problems before Docker, containers vs VMs, and why Docker changed everything.
Part 2 — Installation and First Containers
Install Docker, run your first container, and understand how images work.
Part 3 — Writing Dockerfiles
Write Dockerfiles, understand each instruction, and build optimised images.
Part 4 — Volumes and Data Persistence
Docker volumes, bind mounts, and keeping data safe across container restarts.
Part 5 — Docker Networking
Container networking, port mapping, bridge networks, and service discovery.
Part 6 — Docker Compose
Run multi-container applications easily with Docker Compose YAML files.
Part 7 — Registry and Image Management
Tag, push, and manage Docker images with Docker Hub and private registries.
Part 8 — Multi-Stage Builds
Reduce Docker image sizes dramatically using multi-stage build patterns.
Part 9 — Docker Security Best Practices
Container security, image scanning, non-root users, and production hardening.
Part 10 — Docker in CI/CD Pipelines
Integrate Docker builds into GitHub Actions and automated deployment workflows.
Part 11 — Docker Swarm and Orchestration
Scale Docker services across multiple nodes with Swarm orchestration.
Part 12 — Real-World Docker Project
Build a complete production-ready Docker stack with CI/CD from scratch.
DevOps Roadmap
Complete DevOps career path — 12 parts
Part 1 — What is DevOps and Why It Matters
DevOps culture, practices, CI/CD, and why every tech company needs it.
Part 2 — Linux for DevOps Engineers
Linux commands, permissions, services, and server thinking every DevOps engineer needs.
Part 3 — Git and Version Control for Teams
Git branching strategies, pull requests, hooks, and GitOps workflows.
Part 4 — Linux Networking for DevOps
IP, DNS, ports, firewalls, SSH tunnels and debugging production network issues.
Part 5 — Advanced Git for DevOps Pipelines
Trunk-based development, cherry-pick, bisect, reflog, and Git in CI/CD.
Part 6 — CI/CD Pipelines with GitHub Actions
Build complete CI/CD pipelines, matrix builds, secrets, and production deployment.
Part 7 — Terraform and Infrastructure as Code
Write Terraform HCL to provision and manage cloud infrastructure as code.
Part 8 — Ansible for Configuration Management
Automate server configuration with Ansible playbooks, roles, and inventory.
Part 9 — Monitoring and Observability
Prometheus, Grafana, AlertManager, logs, traces — the three pillars explained.
Part 10 — Kubernetes Fundamentals for DevOps
Pods, Deployments, Services, RBAC, HPA — Kubernetes for production DevOps.
Part 11 — Cloud Platforms for DevOps Engineers
AWS core services, IAM, EC2, EKS, cost optimisation, and multi-region DR.
Part 12 — Complete DevOps Project From Scratch
Build a full CI/CD + Kubernetes + Terraform + monitoring portfolio project.
Python Full Tutorial
Python from scratch to real projects — 12 parts
Part 1 — Introduction and Setup
Install Python, use the REPL, write your first script, and set up VS Code.
Part 2 — Variables and Data Types
int, float, str, bool, list, tuple, dict, set — Python data types explained.
Part 3 — Operators and Input/Output
Arithmetic, comparison, logical operators and interactive Python programs.
Part 4 — If-Else and Decision Making
Conditional logic, nested conditions, ternary operator, and match/case.
Part 5 — Loops: for, while, and Iteration
for loops, while loops, range(), enumerate(), zip(), break, continue.
Part 6 — Data Structures and Collections
Advanced lists, dict tricks, sets, itertools, and the collections module.
Part 7 — Functions, Arguments, and Decorators
*args, **kwargs, lambda, closures, decorators, and functools patterns.
Part 8 — File Handling, CSV, and JSON
Read/write files, CSV, JSON, Excel, ZIP, and pathlib for modern paths.
Part 9 — Error Handling and Exceptions
try/except/finally, custom exceptions, context managers, pytest basics.
Part 10 — Modules, Packages, and pip
Import system, packages, pip, virtual environments, pyenv, and Poetry.
Part 11 — Object Oriented Programming
Classes, inheritance, polymorphism, dataclasses, and Python design patterns.
Part 12 — Virtual Environments and Real Project
Build a complete server monitor: venv, pytest, logging, CI/CD, and packaging.
Linux Full Tutorial
Linux from beginner to production — 12 parts
Part 1 — Introduction to Linux
What Linux is, the filesystem hierarchy, terminal basics, and why it matters.
Part 2 — File Navigation and Management
Navigate the filesystem, manage files, find commands, and symbolic links.
Part 3 — File Permissions and Ownership
chmod, chown, umask, ACLs, SUID/SGID, and Linux security model.
Part 4 — Text Processing Tools
grep, awk, sed, jq, pipes — the essential Linux text processing toolkit.
Part 5 — Process Management
ps, top, htop, kill, systemctl, journalctl, and managing Linux services.
Part 6 — Networking Commands
ip, ss, curl, SSH, scp, rsync, DNS tools, and network troubleshooting.
Part 7 — Shell Scripting
Bash scripts with variables, loops, functions, error handling, and automation.
Part 8 — Cron Jobs and Task Scheduling
cron syntax, crontab, systemd timers, and automating Linux maintenance.
Part 9 — Package Management
apt, dpkg, snap, PPAs, compiling from source, and keeping servers updated.
Part 10 — Environment Variables
PATH, export, .bashrc, .env files, Docker/Kubernetes env vars explained.
Part 11 — Disk Management and Storage
lsblk, fdisk, mount, LVM, EBS volumes, and managing storage on Linux.
Part 12 — System Hardening and Security
SSH hardening, fail2ban, ufw, AppArmor, AIDE, rkhunter, and server security.
AWS + Linux Tutorial
Cloud engineering on AWS with Linux — 12 parts
Part 1 — Why Learn AWS and Linux Together
Cloud computing basics, AWS global infrastructure, and free tier strategy.
Part 2 — Create AWS Account and Launch EC2
Create an AWS account, launch EC2, choose instance types, configure security groups.
Part 3 — Connect to EC2 with SSH
SSH keys, ~/.ssh/config, port forwarding, SCP, rsync, and EC2 Instance Connect.
Part 4 — Users and Permissions on EC2
Linux user management, sudo, SSH key setup, and AWS Systems Manager access.
Part 5 — Install Nginx on EC2
Deploy and configure Nginx, virtual hosts, HTTPS with Let's Encrypt, load balancing.
Part 6 — AWS S3 from the Linux CLI
S3 commands, sync, presigned URLs, event notifications, lifecycle rules.
Part 7 — IAM Roles, Users, and Policies
Write IAM policies, use EC2 instance roles, Secrets Manager, cross-account access.
Part 8 — Bash Scripting for AWS Automation
Automate EC2, S3, and deployments with bash scripts and the AWS CLI.
Part 9 — Master the AWS CLI
Profiles, JMESPath queries, output formats, pagination, and CLI v2 features.
Part 10 — VPC, Networking and Security Groups
VPC design, public/private subnets, security groups, Transit Gateway, Flow Logs.
Part 11 — Monitoring with CloudWatch
Metrics, alarms, Container Insights, X-Ray tracing, and custom metrics.
Part 12 — Deploy a Real App End to End
EC2 + RDS + Nginx + SSL + Auto Scaling — complete production deployment on AWS.
Standalone Articles
AI, Cloud, Markets, Career, Programming — 34 articles
Why AI Will Not Take Your Job
AI automates tasks, not jobs. Understanding what actually changes and what remains human.
AI: From Fear to Power
How to stop worrying about AI and start using it as your career advantage.
How to Use AI the Right Way
The CRAFT prompting framework, when to trust AI, and building productive AI habits.
How AI Changes Software Engineering
What AI actually shifts in the software engineering workflow and what becomes more valuable.
AI + Adobe Creativity
Practical AI workflows for creative professionals using Adobe Firefly and Photoshop.
Cloud Career Roadmap
12-month plan to become a cloud engineer — certifications, projects, and salary guide.
How to Use Cloud Power
Beyond "someone else's server" — auto-scaling, serverless, IaC, and cloud-native thinking.
Cloud Cost Mistakes Beginners Make
The 10 most common cloud billing mistakes and how to avoid surprise AWS charges.
Cloud Security for Non-Security People
IAM mistakes, S3 exposure, secrets in code — the cloud security essentials every engineer needs.
AI + Cloud: New Career Paths
MLOps, AI Platform, LLM development — the new roles at the AI-cloud intersection.
Why Certifications Alone Don't Work
What hirers actually look for, portfolio vs certification, and the combination that gets jobs.
Beginner vs Engineer: The Gap AI Cannot Fill
What separates coders from engineers and how to build skills AI cannot replicate.
Resume Complete Guide for the AI Era
Write a tech resume that gets interviews — format, content, ATS, and AI tools for optimisation.
Top Tech Skills for the AI Era
The skill stack with highest career ROI for 2026-2031 — Python, Kubernetes, Terraform, and more.
Learn Python: Beginner to Pro
Complete Python learning path — phases, projects, DevOps vs data science differences.
Python Projects for DevOps Career
5 real Python projects that build the skills DevOps engineers actually use at work.
Learn Linux: Beginner to Pro
Linux learning hierarchy, practice environments, and the skill tiers that matter for DevOps.
Learn JavaScript: Beginner to Pro
JavaScript learning path, frameworks, and how to go from beginner to employable.
Learn Java: Beginner to Pro
Java learning path, enterprise use cases, Spring Boot, and Android development.
Learn CSS: Beginner to Pro
CSS fundamentals, Flexbox, Grid, animations, and modern CSS for real projects.
Programming Fundamentals Master Guide
The mental models that transfer across every language and how to build real programming skill.
Programming Languages 2026-2031
Which languages are rising, which are declining, and the stack with highest career ROI.
Why Syntax Matters Less Than Thinking
Problem decomposition, debugging mindset, and building real programming skill beyond syntax.
Why the American Market Moves the World
How US markets influence global financial systems and why every investor should watch them.
Global Markets vs Indian Markets
Key structural differences between global and Indian equity markets for investors.
Why Long-Term Investors Win
Compounding, patience, and the evidence for why holding beats trading over time.
Why News-Based Trading Fails
Why reacting to news loses money and what actually works for retail investors.
Market Cycles Beginners Don't Understand
The four market cycle phases and how to position differently in each phase.
How Beginners Misunderstand the American Market
Common myths about US markets that cost beginner investors money.
Why Global Markets Move on Psychology
Fear, greed, narrative, and the emotional forces that drive short-term market movements.
How Global Markets Work — Education Guide
Stock exchanges, indices, order types, market makers, and how prices are set.
Why Systems Matter More Than Politics
Why institutional structures outperform political leadership as long-term wealth drivers.
India in the Next 50 Years
Demographics, economic trajectory, and what India's growth story means for your career.
India's Youth Advantage
Why India's demographic dividend is real, what it requires, and how youth can capitalise on it.
Write & Publish With SRJahir Tech
Original content on AI, Cloud, Programming, Markets, or Technology? Contribute to SRJahir Tech.
- Original content only — no AI-generated filler
- Clear explanation, structured thinking, practical examples
- No promotional or misleading content
Send your article: surajmaitra1996@gmail.com
All submissions reviewed. We may edit or decline content to maintain quality.