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Greenboot on Fedora IoT and CoreOS: Automatic Health Checks and Rollback on Failed Updates

By admin June 15, 2026

Greenboot automatically runs health check scripts after every boot on Fedora IoT and CoreOS — if the system is unhealthy, it rolls back to the previous deployment after 3 consecutive failures. This guide covers installation, writing real-world check scripts, and how to test rollback without waiting for an actual failed update.

Artificial Intelligence tutorial - IT technology blog

Building an Intelligent Alert System with LLM: Automatically Classifying and Summarizing Prometheus Alerts to Reduce Alert Fatigue

By admin June 15, 2026

A hands-on guide to building a Prometheus alert classification and summarization system using LLM, helping SysAdmins escape alert fatigue. Compares rule-based, ML, and LLM approaches, with a complete Python webhook receiver.

Database

SQLite in Production: Effortless Real-time Backup with Litestream

By admin June 15, 2026

Stop worrying about data loss with SQLite. Learn how to use Litestream to automatically back up your database to Cloudflare R2/S3 in real time, giving your production application rock-solid data protection.

Git

Mastering git add -p: The Secret to Splitting Commits for a Squeaky Clean Git History

By admin June 15, 2026

Learn how to use git add -p to split changes into multiple separate commits. This technique keeps Git history clean, makes reviews easier, and improves professional logic management.

Monitoring

Monitoring Every Linux Command: Snoopy Logger and Grafana Loki Solution

By admin June 15, 2026

Forget .bash_history. Here is how to use Snoopy Logger and Grafana Loki to monitor every user action on Linux professionally and securely.

Development

Mastering WebRTC: Building a P2P Video Call App with Node.js from A-Z

By admin June 15, 2026

A step-by-step guide to building a P2P Video Call app from scratch with WebRTC and Node.js. Learn the secrets of Signaling, NAT traversal, and latency optimization.

Centos

10 Essential Post-Installation Steps for CentOS Stream 9: A Production “Survival” Checklist

By admin June 15, 2026

Just installed CentOS Stream 9? Check out this checklist of 10 essential tasks to optimize security and performance based on real-world production experience.

Virtualization

KVM/Proxmox Snapshot Management: Don’t Let the ‘Undo’ Button Become a Data Loss Disaster

By admin June 15, 2026

Managing KVM and Proxmox snapshots is more than just clicking a button. Learn how to use QEMU Guest Agent, handle snapshot chains, and optimize disk performance for 100% data safety.

Centos

Installing Node.js and PM2 on CentOS Stream 9: Secrets to Keeping Your App Alive at 2 AM

By admin June 14, 2026

Learn how to install Node.js LTS and configure PM2 professionally on CentOS Stream 9. This guide helps your application auto-start, manage logs effectively, and optimize server performance.

Monitoring

Grafana Mimir: An ‘Infinite’ Prometheus Metrics Storage Solution on Object Storage

By admin June 14, 2026

Running out of disk space due to Prometheus? Discover how to install Grafana Mimir for long-term metrics storage on Object Storage. A cost-effective, high-performance solution for DevOps.

Systemd Hardening: Securing Services with ProtectSystem, ProtectHome, and PrivateTmp

Deploying a MongoDB Sharded Cluster with Docker Compose: Data Sharding for Large-Scale Applications

Juju and Charmed Operators on Ubuntu: Automating Deployment and Application Lifecycle Management with a Model-Driven Approach

Installing Proxmox VE on Raspberry Pi 5: Ultra Low-Cost ARM64 Home Lab with Debian Port

Manage MySQL Like a Pro: Boost Performance 200% with the mycli and mytop Duo

Building Spring Boot 3 & PostgreSQL REST APIs: From ‘Working’ Code to Production-Ready Systems

Building 2FA with Node.js: Don’t Let Passwords Be Your Only Line of Defense

Building a Batch Video Processing Automation System with Python and MoviePy: From Manual to ‘Industrialized’

Migrating MSSQL to MySQL: Pro Tips for Troubleshooting and Data Type Mismatches

Repository Rescue: Mastering git fsck to Recover Code and Fix Data Errors

Greenboot on Fedora IoT and CoreOS: Automatic Health Checks and Rollback on Failed Updates

Building an Intelligent Alert System with LLM: Automatically Classifying and Summarizing Prometheus Alerts to Reduce Alert Fatigue

SQLite in Production: Effortless Real-time Backup with Litestream

Mastering git add -p: The Secret to Splitting Commits for a Squeaky Clean Git History

Monitoring Every Linux Command: Snoopy Logger and Grafana Loki Solution

Mastering WebRTC: Building a P2P Video Call App with Node.js from A-Z

10 Essential Post-Installation Steps for CentOS Stream 9: A Production “Survival” Checklist

KVM/Proxmox Snapshot Management: Don’t Let the ‘Undo’ Button Become a Data Loss Disaster

Installing Node.js and PM2 on CentOS Stream 9: Secrets to Keeping Your App Alive at 2 AM

Grafana Mimir: An ‘Infinite’ Prometheus Metrics Storage Solution on Object Storage