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Monitoring tutorial - IT technology blog

Building a Centralized Logging System with Fluentd and OpenSearch: A Lightweight ELK Stack Alternative

By admin May 3, 2026

The days of SSH and 'tail -f' for logs are over. Build a lightweight centralized logging system with Fluentd and OpenSearch, using 1/10 the RAM of ELK Stack.

Security

Ditch VPNs, Use Cloudflare Access to Secure Internal Apps: Fast, Secure, and Effortless

By admin May 3, 2026

Forget VPNs! Learn how to use Cloudflare Access to protect internal dashboards and SSH with Google/GitHub SSO. 5-minute setup for enterprise-grade security.

Git

Git Patch & Git Apply: Instant Code Sharing Without Messing Up the Commit Log

By admin May 3, 2026

Share code quickly and keep a clean commit history without pushing or pulling. A detailed guide on using Git Patch and Git Apply for a professional workflow.

Development

Real-time Data Streaming with SSE in Node.js: Don’t Use WebSocket for Everything

By admin May 3, 2026

Don't use WebSocket for everything! Discover Server-Sent Events (SSE) - a lightweight, easy-to-implement real-time streaming solution in Node.js for one-way data flow.

Development

Practical Redis Caching: From DB Crashes to Handling Millions of Requests

By admin May 3, 2026

Key takeaways from 6 months of operating Redis in production. Detailed guide on reducing Database load from 95% to 15% using Cache-Aside, Write-Through, and Jitter TTL techniques.

Ubuntu

Joining Ubuntu Server to Windows AD with SSSD: Centralized Management for Hundreds of Users

By admin May 3, 2026

Manually managing users on dozens of Ubuntu servers is a nightmare. This guide shows how to use SSSD to join Ubuntu Server to Windows AD for centralized management, automated home directories, and enhanced security.

Docker

Securing Docker Images with Cosign: Thwarting Malware in the Software Supply Chain

By admin May 3, 2026

Forget Notary v1; Cosign is the new standard for Docker image security. This guide covers signing, verification, and CI/CD integration to protect your systems from malware.

Development

Building Job Queues with BullMQ and Redis: The Secret to Silky Smooth Background Processing

By admin May 2, 2026

Learn how to build a professional Job Queue system with BullMQ and Redis in Node.js. Optimize background tasks, automate retries, and boost application performance effectively.

Ubuntu

Build Your Own Home NAS with Ubuntu Server and OpenMediaVault: Optimized 10TB Storage

By admin May 2, 2026

Transform Ubuntu Server into a powerful Home NAS with OpenMediaVault. A detailed guide for beginners covering installation, disk management, and Docker media streaming.

Monitoring

Telegraf Installation Guide: The ‘Backbone’ of Metrics Collection for InfluxDB

By admin May 2, 2026

A detailed guide on installing and optimizing Telegraf. Collect metrics from Linux and Docker for InfluxDB to build a professional monitoring system.

Optimizing PHP 8.3 on Ubuntu 24.04: Don’t Let Your Server Run Like a Snail

Mastering Python functools: Writing Better, Faster Code

Fixing SELinux Errors on Fedora for Good: Use setroubleshoot and audit2allow Instead of Disabling It

Build Your Own High-Performance, Low-Cost Git Server with Gitea on Fedora: Maximum Security with SELinux

Configuring Multi-WAN Failover on Linux: A “Never-Down” Internet Solution with Keepalived

Podman Auto-update on Fedora: Automating Containers the Native Way

Installing MinIO on CentOS Stream 9: Build Your Own S3 Storage with SELinux and Firewalld

Installing Grafana on CentOS Stream 9: Professional Server Monitoring with Prometheus

SSH Bastion Host (Jump Server) Configuration Guide: A Secure Gateway for Linux Systems

Goodbye Cron Jobs: Building Durable Workflows with Temporal.io in Node.js

Building a Centralized Logging System with Fluentd and OpenSearch: A Lightweight ELK Stack Alternative

Ditch VPNs, Use Cloudflare Access to Secure Internal Apps: Fast, Secure, and Effortless

Git Patch & Git Apply: Instant Code Sharing Without Messing Up the Commit Log

Real-time Data Streaming with SSE in Node.js: Don’t Use WebSocket for Everything

Practical Redis Caching: From DB Crashes to Handling Millions of Requests

Joining Ubuntu Server to Windows AD with SSSD: Centralized Management for Hundreds of Users

Securing Docker Images with Cosign: Thwarting Malware in the Software Supply Chain

Building Job Queues with BullMQ and Redis: The Secret to Silky Smooth Background Processing

Build Your Own Home NAS with Ubuntu Server and OpenMediaVault: Optimized 10TB Storage

Telegraf Installation Guide: The ‘Backbone’ of Metrics Collection for InfluxDB