DevOps Engineer Blog

Expert insights on Linux, Docker, Jenkins CI/CD, AWS Cloud & Infrastructure Automation by Manish Kumar, DevOps Engineer & AWS Architect from Ghaziabad, India.

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Manish Kumar — DevOps Engineer & AWS Solution Architect

B.Tech Computer Science graduate from Ghaziabad, Uttar Pradesh. Experienced in Linux server administration, Docker containerization, Jenkins CI/CD pipelines, AWS cloud architecture, network scanning, and Metasploit security testing. Internship at Appletree Infotech.

Docker

Getting Started with Docker for Java Developers

Learn how to containerize your Java Spring Boot applications using Docker. This guide covers Dockerfile creation, image building, container orchestration, and deploying to production environments efficiently.

July 1, 2026 · By Manish Kumar

CI/CD

Setting Up Jenkins CI/CD Pipeline for Spring Boot

Step-by-step guide to automating your Java Spring Boot application deployment using Jenkins pipelines. Covers pipeline stages, artifact generation, and automated deployment to AWS EC2 instances.

July 10, 2026 · By Manish Kumar

Linux

Linux Administration Essentials for DevOps Engineers

Key Linux commands, file system permissions, process management, cron jobs, and system administration tasks every DevOps Engineer must master for managing cloud servers effectively.

July 15, 2026 · By Manish Kumar

AWS

AWS EC2 & S3 Setup Guide for Beginners

A beginner-friendly guide to launching your first AWS EC2 instance, configuring security groups, and hosting static assets on S3 — with real-world examples from my projects at Appletree Infotech.

July 20, 2026 · By Manish Kumar

Security

Network Scanning with Nmap & Metasploit Basics

Introduction to ethical network scanning techniques using Nmap and basic Metasploit framework usage for security auditing and vulnerability testing in controlled environments.

July 22, 2026 · By Manish Kumar

Automation

Shell Scripting for DevOps: Automate Everything

Practical shell scripting examples for automating server provisioning, log rotation, backup jobs, and deployment workflows — saving hours of manual DevOps work every week.

July 24, 2026 · By Manish Kumar