admin – Page 67 – ITFROMZERO

Building an Internal Certificate Authority with step-ca: Say Goodbye to LAN Security Warnings

By admin April 11, 2026

Say goodbye to red security warnings in your LAN. A detailed guide on building an internal Certificate Authority (CA) with step-ca and automating SSL via ACME.

MySQL

MySQL 8 Window Functions: The Ultimate Lifesaver for Complex Reporting Queries

By admin April 11, 2026

MySQL 8 Window Functions are powerful tools for efficient running totals, rankings, and data comparisons, replacing complex and heavy SELF JOIN queries.

Database

Apache Cassandra: Master the “Write-Heavy Storm” for Large-Scale Systems

By admin April 11, 2026

Master Apache Cassandra for massive write-heavy systems. This article shares query-driven data modeling strategies and performance optimization tips from real-world experience.

Docker

Running GitHub Actions Locally with act: ‘Lightning Fast’ Pipeline Debugging Without Pushing Code

By admin April 11, 2026

Tired of constant 'fix ci' commits? Learn how to use act and Docker to debug GitHub Actions locally, saving time and keeping your Git history clean.

Python

SQLAlchemy ORM: The ‘Gold Standard’ Database Management Solution for Pythonistas

By admin April 11, 2026

Say goodbye to messy manual SQL queries. This A-Z SQLAlchemy ORM guide helps you manage databases in Python professionally, securely, and efficiently for DevOps.

Fedora

Optimizing zRAM on Fedora: How to ‘Expand’ Your RAM for a Smooth, Lag-Free Experience

By admin April 11, 2026

Is Fedora lagging with too many tabs open? Discover how to optimize zRAM using zram-generator and zstd to expand your memory and boost system smoothness by over 30%.

Docker

Docker Resource Limits: Don’t Let One Container Crash Your Entire Server

By admin April 11, 2026

Configuring Docker Resource Limits is a must for professional DevOps. Learn how to limit CPU, RAM, and Disk I/O to prevent server hangs and optimize infrastructure costs.

Artificial Intelligence tutorial - IT technology blog

IT Automation: Don’t Just ‘Chat’ with AI, Turn It Into a Real Agent

By admin April 11, 2026

No more manual log monitoring! Discover how to combine Python scripts with AI APIs to automatically detect, analyze, and suggest server fixes in seconds.

Monitoring

VictoriaMetrics Installation Guide: A Prometheus Alternative Saving 90% Disk Space

By admin April 10, 2026

A detailed guide on installing VictoriaMetrics as a Prometheus alternative. Save 90% disk space, reduce RAM usage, and boost query speeds for large-scale monitoring systems.