Devops

How to Safely Remove an LVM Disk from an Azure/AWS VM

Azure, Blog, Devops, Linux

Managing storage in production environments requires precision, especially when working with LVM-backed filesystems on cloud infrastructure. This guide documents a production-safe procedure to: This process ensures zero data loss and controlled disk decommissioning. Step 1: Stop the Application Before performing any filesystem shrink or LVM modification, stop the service using the volume. systemctl stop cassandra.service […]

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Why Kubernetes Came Into the Picture: A Historical Perspective on Docker vs Kubernetes

Blog, Devops, Kubernetes

In modern cloud-native architecture, containers and orchestration are foundational concepts. Two names dominate this space: Docker and Kubernetes. A common question arises: If Docker already existed, why did Kubernetes come into the picture at all?To answer this, we need to look at the historical evolution of application deployment, the limitations Docker faced at scale, and

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Microservices Architecture

Architecture, Blog, Devops

Microservices Architecture is a design approach where an application is broken down into small, independent services, each responsible for a single business function. Each service: Architecture Components Explained Multiple Independent Services Each service handles one specific capability, for example: ✅ If one service fails, others continue working✅ Teams can work independently Containers (Docker) Each microservice is packaged

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AWS Storage Services Explained: S3, EBS, EFS, and Use Cases

Aws, Blog, Devops

Understand AWS storage services including Amazon S3, EBS, and EFS, with use cases and best practices for cloud storage. What Are AWS Storage Services? AWS provides a range of managed storage services designed to store data securely, durably, and at scale. These services support different access patterns, performance requirements, and workloads. Core AWS Storage Services

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Essential Linux Commands: 50 Practical CLI Commands You Must Know

Blog, Devops, Linux

Below are essential Linux commands used daily 50 Commonly Used Linux Commands (With Uses) 📂 Navigation & Display 👤 User & System Identity ⏰ Date, Time & System Status 📄 File & Directory Management 📖 File Viewing & Editing 🔍 Searching & Text Processing 📊 Disk & Memory Information ⚙️ Process & Resource Management 🌐

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MongoDB Fundamentals: Installation and Replication on Linux (Ubuntu & RHEL)

Blog, Database, Devops

Learn MongoDB fundamentals including installation, replica set architecture, Primary, Secondary, Arbiter roles, elections, and replication management on Linux. What Is MongoDB? MongoDB is a document-oriented NoSQL database designed for scalability, flexibility, and high availability. It stores data in BSON (JSON-like) documents and is widely used in modern web, microservices, and cloud-native applications. MongoDB achieves high

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Redis Fundamentals: Installation and Replication on Linux (Ubuntu & RHEL)

Blog, Database, Devops

Learn Redis fundamentals, including installation, configuration, and master-replica replication on Ubuntu and RHEL Linux. What Is Redis? Redis is an in-memory key-value data store used for caching, messaging, and real-time analytics. It offers extremely low latency and supports optional persistence. Redis Installation Ubuntu RHEL / Rocky / Alma Verify: Basic Configuration Edit: Key settings: Restart

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Database Debugging Explained: Troubleshooting Performance and Failures

Blog, Database, Devops

Learn practical database debugging techniques to troubleshoot performance issues, errors, and operational failures. What Is Database Debugging? Database debugging is the process of identifying and resolving issues that affect database performance, availability, or correctness. These issues may arise from configuration errors, query inefficiencies, resource exhaustion, or infrastructure problems. Effective debugging relies on logs, metrics, and

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