admin, Author at ITNotes

Linux Time Sync: Why Chrony is the Modern Standard Over NTP

April 7, 2026

Is your server time drifting? Learn why Chrony has replaced NTP as the standard for Linux time synchronization and how to configure it for high-accuracy production environments.

Linux

Stop Grepping Dead Text: Modern Linux Log Analysis with Journalctl

April 7, 2026

Ditch the slow text-based grep workflow. Learn how to use journalctl to filter logs by time, service, and priority while keeping your disk usage under control.

Linux

Fix GRUB: A Practical Guide to Restoring Linux Systems via Live USB

April 6, 2026

Recover your Linux system from GRUB boot errors using a Live USB. This guide provides a clear, step-by-step workflow for using chroot to repair both UEFI and BIOS systems.

Linux

Stop Losing SSH Progress: A Practical Guide to Tmux for Linux Admins

April 6, 2026

Stop losing work to SSH timeouts. Master Tmux to manage persistent terminal sessions, optimize your workflow with split panes, and build a professional Linux environment.

Security

Hardening Nginx: Stop Clickjacking and Injection with CSP, HSTS, and Permissions-Policy

April 6, 2026

Secure your Nginx server in minutes. This guide covers HSTS for encryption, CSP for blocking XSS, and Permissions-Policy for hardware privacy with production-ready code.

Programming

Stop Blocking Your Event Loop: Scaling Node.js with BullMQ and Redis

April 6, 2026

Stop letting heavy tasks kill your Node.js performance. Learn how to use BullMQ and Redis to handle background processing, improve response times, and build a more resilient architecture.

Networking

Linux QoS with tc and iproute2: Stop Your Backups from Killing Your App

April 6, 2026

Tired of backups choking your production web traffic? Learn how to use Linux Traffic Control (tc) and HTB to prioritize critical services and guarantee bandwidth.

HomeLab

Ditch the Client Apps: Run Apache Guacamole on Docker for Seamless HomeLab Access

April 6, 2026

Tired of jumping between RDP and SSH apps? This guide shows you how to deploy Apache Guacamole on Docker for a centralized, browser-based remote access gateway.

HomeLab

Self-Hosting Email with Mailcow: A 6-Month Production Reality Check

April 6, 2026

Is self-hosting email actually viable? After 6 months of production use, here is a guide to setting up Mailcow, mastering DNS deliverability, and keeping your server off blacklists.

Database

OLAP vs OLTP: Why Your Analytical Queries are Killing Production

April 6, 2026

Is a single query crashing your app? Learn the difference between OLTP and OLAP, why row storage fails at scale, and how to build a stable data architecture.