DevOps – Page 2 – ITFROMZERO

Odyssey: The Ultimate Solution to Save PostgreSQL from Bottlenecks at Scale

By admin September 17, 2026

Switch from PgBouncer to Odyssey to leverage multi-threaded power for PostgreSQL. A detailed guide on optimizing configurations to handle tens of thousands of concurrent connections in enterprise environments.

Fedora

Managing Fedora CoreOS Auto-updates: Prevent Simultaneous Cluster Reboots

By admin September 16, 2026

Don't let Fedora CoreOS's auto-update feature crash your cluster. Learn how to configure Zincati and FleetLock for safe reboot coordination.

Docker

Kamal: Deploy Docker Apps to VPS Without Kubernetes — A Practical Guide

By admin September 15, 2026

Kamal is a tool for deploying Docker applications to VPS over SSH with zero-downtime, automatic SSL, and one-command rollbacks — no Kubernetes or complex setup required. This guide covers practical deploy.yml configuration, tips for avoiding common pitfalls, and the essential monitoring commands you need after deployment.

Docker

Configuring Traefik v3 with Cloudflare DNS Challenge: Automatic Wildcard SSL for Docker

By admin September 15, 2026

A step-by-step guide to configuring Traefik v3 + Cloudflare DNS Challenge for automatic Wildcard SSL provisioning and renewal on all Docker containers — no Nginx configuration, no port 80 hassle.

Python

Mastering Memory Leak Detection in Python Using Memray

By admin September 15, 2026

Stop letting the OOM Killer ruin your sleep. Learn how to use Memray to pinpoint memory-leaking code in Python with high efficiency and precision.

Linux

Atuin: A Lifesaver for Terminal History with SQLite and Fuzzy Search

By admin September 15, 2026

Replace your clunky history manager with Atuin. Leverage the power of SQLite for ultra-fast command searching, E2EE synchronization, and smart command filtering.

Development

Rust and Axum: Secrets to Building High-Speed Web APIs from Real-World Experience

By admin September 15, 2026

Learn how to build high-performance Web APIs with Rust and Axum through real-world experience. This guide covers everything from coding and DB connections to optimized Linux deployment.

Docker

Docker Security: Blocking Malicious Images with Docker Content Trust (DCT)

By admin September 15, 2026

Don't let your server become a cryptomining farm by pulling suspicious images. Learn to configure Docker Content Trust (DCT) to only run signed containers.

Development

API Testing and Monitoring with Hurl: A Lightweight Alternative to Postman

By admin September 14, 2026

Forget Postman's bloat. Hurl lets you test APIs using plain text files, consumes minimal RAM, and integrates seamlessly into your CI/CD pipeline.

Database

Unit Testing for PostgreSQL with pgTAP: Don’t Let the Database Be a ‘Blind Spot’ During Deployment

By admin September 13, 2026

Don't let database errors ruin your project. Learn how to use pgTAP to professionally automate schema, function, and trigger testing for PostgreSQL.