DevOps – Page 28 – ITFROMZERO

MySQL User Management and Access Control: Tips & Tricks from Real-World Experience

By admin March 3, 2026

A practical guide to MySQL user management and access control following the Principle of Least Privilege — creating users, managing GRANT/REVOKE permissions, and setting up a solid foundation for production projects. Real-world tips and tricks to protect your database from unnecessary risk.

Artificial Intelligence tutorial - IT technology blog

A Practical Guide to Using OpenAI API with Python: From Setup to Production

By admin March 3, 2026

A practical guide to using the OpenAI API with Python in a DevOps environment: proper setup, building a wrapper function with retry logic, streaming responses, parsing structured JSON output, and tracking token costs. Focused on common pitfalls and how to avoid them from the start.

Centos

Installing and Configuring AlmaLinux as a CentOS Replacement: Real-World Experience

By admin March 2, 2026

A guide to installing AlmaLinux and migrating in-place from CentOS 7/8 to AlmaLinux without rebuilding servers. Compares AlmaLinux vs Rocky Linux vs Oracle Linux from a practical DevOps perspective, with basic post-install security configuration included.

Git

Git Hooks: Automate Your Workflow So You Never Commit Broken Code Again

By admin March 2, 2026

Git hooks let you automatically run linting, tests, and commit message validation before code enters the repo — no manual reminders needed. This article compares client-side vs server-side hooks, manual hooks vs Husky, and walks through the 3 most practical hooks to implement for your team.

MySQL

MySQL Master-Slave Replication Setup: From Real Incidents to Solutions

By admin March 1, 2026

A complete guide to MySQL Master-Slave Replication from start to finish, solving database overload and single point of failure. Covers each step from configuring Binary Log and creating the replication user to connecting and verifying the Slave.

Virtualization

How to Use Vagrant for a Consistent Dev Environment — No More ‘Works on My Machine’

By admin March 1, 2026

Vagrant standardizes dev environments with a Vagrantfile committed to git — putting an end to the 'works on my machine' problem. This article compares manual VMs, Docker, and Vagrant, analyzes when to use each, and provides a step-by-step setup guide from a single VM to a multi-machine production simulation.

Docker

Deploying Node.js with Docker: Tips & Tricks from Real-World Experience

By admin March 1, 2026

Real-world experience deploying Node.js apps with Docker the right way: avoiding bloated images, handling graceful shutdown, managing environment variables securely, and configuring health checks for production.

Docker

Install Portainer to Manage Docker via UI — No More Memorizing Commands, No More Mistakes

By admin February 28, 2026

Managing Docker via CLI every day is time-consuming and error-prone as your container count grows. This guide walks you through installing Portainer CE with Docker Compose v2, basic security configuration, and practical tips for more effective container management via the web interface.

Database

Optimizing PostgreSQL Performance with PgBouncer: Connection Pooling in Production

By admin February 28, 2026

A guide to installing and configuring PgBouncer to address connection overhead in PostgreSQL. Real-world experience after 6 months in production: server connections reduced from 180 to 25, API response time improved from 800ms to under 300ms.

Docker

Docker Swarm Basics: A Complete Guide to Deploying Container Clusters from A to Z

By admin February 28, 2026

Docker Swarm frees you from the single-host trap: automatically distributes containers, scales with a single command, and performs zero-downtime rolling updates. This guide walks from a real-world problem to a fully working cluster setup, step by step.