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Automating VMware vSphere with Ansible: From ‘Manual Clicks’ to Infrastructure as Code

By IT From Zero June 6, 2026

A complete guide to automating VMware vSphere with Ansible. Learn how to set up pyVmomi, write Playbooks for bulk VM deployment, and manage an 8-host cluster efficiently.

MySQL

MySQL 8 Check Constraints: Stop Junk Data at the Gate

By IT From Zero June 6, 2026

MySQL 8.0.16 finally enforces Check Constraints. Discover how to set up the final layer of data security to prevent input errors and reduce backend overhead.

Network

Configuring Dante SOCKS5 Proxy on Linux: 6 Months of ‘Real-World’ Experience and Hard-Learned Lessons

By IT From Zero June 6, 2026

Practical experience installing and optimizing Dante SOCKS5 Proxy for a team of 50. This guide covers ACL configuration, user security, and avoiding common log file or DNS leak issues.

Ubuntu

HAProxy: Complete Guide to Layer 7 Web Load Balancing on Ubuntu

By IT From Zero June 6, 2026

Don't let a single server carry the entire load. Learn how to configure HAProxy Layer 7 on Ubuntu to manage millions of requests, handle Sticky Sessions, and monitor backends effectively.

Artificial Intelligence tutorial - IT technology blog

Streamlining AI Agents with Smolagents: A Lightweight Automation ‘Weapon’ for DevOps

By IT From Zero June 6, 2026

Don't let heavy AI frameworks slow down your workflow. Smolagents helps you build lightweight AI agents that execute Python code directly to handle real-world tasks with just a few lines of code.

Git

Stop Manual Versioning! Automate Your Version Strings with git describe

By IT From Zero June 6, 2026

Forget manual versioning! Learn how to use git describe to automatically generate professional version strings from commit history, making your CI/CD workflow more accurate and effortless.

Python

match-case in Python 3.10: Replacing Nested if-else with Structural Pattern Matching

By IT From Zero June 5, 2026

After 6 months of using Python match-case in production, I've found that Structural Pattern Matching shines brightest when processing dicts, dataclasses, and responses with multiple structural variants. This post compares if-else and match-case with real-world examples, analyzes when to use each, and covers the most common patterns.

MySQL

Optimizing Temporary Tables in MySQL: Preventing I/O Bottlenecks When Processing Complex Queries

By IT From Zero June 5, 2026

Temporary tables in MySQL spilling to disk are a silent culprit behind slow queries and disk I/O spikes. This article breaks down the root cause, how to diagnose it using SHOW STATUS and EXPLAIN, and practical solutions ranging from increasing tmp_table_size to rewriting queries and adding the right indexes.

VMware

VMware ESXi Graceful Shutdown on Power Failure: Proper Configuration to Prevent VM Corruption

By IT From Zero June 5, 2026

A guide to configuring graceful shutdown for VMware ESXi during power failures: enabling VMware Tools, setting the correct Autostart order, and integrating a UPS (APC PowerChute or NUT + PowerCLI) for automatic safe shutdown. Real-world experience from an 8-host ESXi cluster in production.

Monitoring

Monitoring Apache Kafka with Prometheus and Grafana: Consumer Lag, Throughput, and Topic Health in Production

By IT From Zero June 5, 2026

A comparison of Apache Kafka monitoring approaches (AKHQ, Burrow, JMX Exporter) and a hands-on deployment guide using JMX Exporter + kafka-exporter + Prometheus + Grafana to track consumer lag, broker throughput, and topic health. Includes production-ready PromQL queries and alert rules.

MySQL Group Replication Tutorial: Building an Auto-Failover InnoDB Cluster

OpenSCAP Guide for Linux: Automated Scanning and CIS Benchmark Remediation

A Guide to Configuring Table Partitioning in MySQL: Boosting Large Table Performance with RANGE and LIST

How to Install and Configure Fail2ban on Linux: Block SSH and Web Server Brute-Force Attacks

Configuring kdump on Fedora Server: Capturing Kernel Panics and Analyzing Crash Dumps

Kokoro-TTS Setup and Usage Guide: Building an Offline AI Text-to-Speech System on Linux

Real-Time File Synchronization on CentOS Stream 9 with Lsyncd and Rsync: A Production-Grade Setup

How to Use Rclone on Ubuntu to Automate Data Backups to Google Drive, S3, and OneDrive

Installing and Configuring AIDE on CentOS Stream 9: File Integrity Monitoring and Tamper Detection

How to Monitor HashiCorp Vault with Prometheus and Grafana: Tracking Token Leases, Request Latency, and Unseal Status

Automating VMware vSphere with Ansible: From ‘Manual Clicks’ to Infrastructure as Code

MySQL 8 Check Constraints: Stop Junk Data at the Gate

Configuring Dante SOCKS5 Proxy on Linux: 6 Months of ‘Real-World’ Experience and Hard-Learned Lessons

HAProxy: Complete Guide to Layer 7 Web Load Balancing on Ubuntu

Streamlining AI Agents with Smolagents: A Lightweight Automation ‘Weapon’ for DevOps

Stop Manual Versioning! Automate Your Version Strings with git describe

match-case in Python 3.10: Replacing Nested if-else with Structural Pattern Matching

Optimizing Temporary Tables in MySQL: Preventing I/O Bottlenecks When Processing Complex Queries

VMware ESXi Graceful Shutdown on Power Failure: Proper Configuration to Prevent VM Corruption

Monitoring Apache Kafka with Prometheus and Grafana: Consumer Lag, Throughput, and Topic Health in Production