DevOps Archives - Page 61 of 63 - ITFROMZERO

How to Set Up a Load Balancer with HAProxy on Linux

By IT From Zero March 8, 2026

A practical guide to configuring HAProxy as a load balancer: from installation and roundrobin/leastconn/source algorithms to HTTP health checks, SSL termination, and zero-downtime server draining. Tips drawn from real production experience.

Database

Setting Up and Configuring Redis Sentinel: High Availability for Redis in Production

By IT From Zero March 7, 2026

A practical guide to setting up a 3-node Redis Sentinel cluster for high availability in production: configuring master-replica replication, automatic failover, connecting applications through Sentinel, and common operational pitfalls.

Artificial Intelligence tutorial - IT technology blog

Deploying AI Models on Your Own Server: Self-Hosting to Protect Sensitive Data

By IT From Zero March 7, 2026

A guide to self-hosting AI models (llama.cpp, vLLM) on your own server to protect sensitive data and avoid legal risks associated with cloud AI. Covers security configuration with Nginx reverse proxy, firewall rules, Docker Compose, and Python integration.

Fedora

Fedora vs Ubuntu: Which Distro Is Right for You

By IT From Zero March 6, 2026

A practical DevOps comparison of Fedora and Ubuntu: differences in release lifecycle, package managers, security model, and hardware support. A clear breakdown of each distro's pros and cons to help you choose the right one for your use case.

Fedora

Managing Container Images with Podman on Fedora: Build, Push, and Pull from Registry

By IT From Zero March 6, 2026

A practical guide to managing container images with Podman on Fedora: comparing Podman CLI vs Docker CE vs Podman Desktop, then walking through building an image from a Containerfile, pushing to Docker Hub/GitHub Container Registry, pulling it back, plus tips for cleanup and offline image transfer.

Network

Using tcpdump and Wireshark to Effectively Analyze Network Traffic

By IT From Zero March 6, 2026

A hands-on guide to combining tcpdump and Wireshark for capturing and analyzing network traffic on Linux servers. Covers everything from basic filter commands to advanced intermittent packet loss debugging, with production-ready optimization tips.

VMware

Installing VMware Workstation and Creating Your First VM: A Hands-On Guide

By IT From Zero March 6, 2026

A hands-on guide to installing VMware Workstation Pro (free since 2024) and creating your first Ubuntu Server VM — version comparisons, optimal configuration, snapshots, and tips from real-world experience.

MySQL

MySQL Database Backup and Restore: Practical Lessons from Production

By IT From Zero March 6, 2026

A practical guide to MySQL database backup and restore based on real experience with a 50GB production database. Compares mysqldump, mysqlpump, and XtraBackup, with automation scripts and the 3-2-1 backup strategy.

Network

Measuring Network Speed and Performance with iperf3 on Linux Server

By IT From Zero March 6, 2026

A guide to using iperf3 to measure real-world bandwidth between two Linux servers, detect packet loss and jitter with UDP mode, and write time-based monitoring scripts to catch intermittent issues. Includes comparisons with speedtest-cli and netperf to help you pick the right tool for each scenario.

Network

How to Use nmap for Network Scanning and Linux Server Security Auditing

By IT From Zero March 6, 2026

A practical guide to using nmap for port scanning, service detection, and Linux server security auditing — drawn from real infrastructure management experience. Covers basic commands, NSE scripts, and an automation script for weekly audits.