RSRahul Shuklaindevopsjourneywithrahul.hashnode.devLinux File Permissions For DevOps BeginnersWhen I started learning Linux for DevOps, everything felt exciting. Every new command felt like unlocking a new level. I learned commands like: ls cd mkdir grep Slowly, the Linux terminal started fee1d ago·5 min read
CHCheelo Hamududuinmydevopsjourneyctd.hashnode.devBuilding the Foundation: A Beginner’s Guide to the Docker UniverseWelcome to the first deep dive on the blog! If you've ever dealt with the frustration of code that "works on my machine" but crashes in production, you’re in the right place. Today, we are breaking doMar 7·4 min read
SASaad Ahmadindvsphere.hashnode.devIt’s a MindsetDevOps is often misunderstood as just a set of tools or scripts, but at its core, it’s a culture and mindset. It’s about collaboration, communication, and shared responsibility between development andMar 7·1 min read
HRHello Rootinhelloroot.hashnode.devDovecot Error Fatal: Multiple files for module var_expand_cryptThe error on dovecot service "Fatal: Multiple files for module var_expand_crypt" indicates that the Dovecot mail server configuration has ran into a problem where the var_expand_crypt plugin is loadedMar 4·2 min read
SPSamarjeet Patilinsamargeet.hashnode.devAWS Serverless Architecture: API Gateway, Lambda, and DynamoDBIntroduction Serverless architecture on AWS enables developers to build scalable applications without provisioning or managing servers. Instead of worrying about infrastructure, we focus purely on busMar 4·5 min read
SPSamarjeet Patilinsamargeet.hashnode.devBuilding an S3 Event-Driven AWS Lambda to Send Email Alerts and Backup FilesIntroduction In this blog, I’ll walk through a hands-on AWS serverless implementation where an S3 file upload automatically triggers a Lambda function, sends an email notification via SNS, and copies Mar 3·5 min read
SPSamarjeet Patilinsamargeet.hashnode.devAWS Automation Using Python Boto3 & AWS CLIObjective To understand and practice AWS automation using Python (Boto3) and AWS CLI, including: Setting up Python and required packages Configuring AWS permissions Accessing AWS services using IAMMar 2·3 min read
DZDev Zodiacindevzodiac.hashnode.devDocker + Django in 10 Days: From Zero to Production [Day: 06]🎯 Goal of Day 6 By the end of today, you will: Understand what environment variables are Use a .env file with Docker Compose Clean up Django settings.py Understand volumes deeply Know how DockerMar 1·3 min read
RRahulindevopswithrahulsharma.hashnode.dev(Day 29-37) Docker Fundamentals to Advanced Concepts – Complete Practical GuideIntially when developers build applications on their local systems, everything works perfectly because: They use their own OS (Windows/Linux/Mac) They have specific versions of software and librarieMar 1·9 min read
VKVivek Kumar Guptainmyblogvivek2026.hashnode.dev🧠 Git for Beginners: Basics and Essential CommandsWhy Version Control Exists (The Real Problem) Imagine this situation: You’re building a project. Your folder looks like this: project_final project_final_new project_final_latest project_final_final2 Feb 28·4 min read
