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Monitoring tutorial - IT technology blog

Monitoring BorgBackup and Restic with Prometheus: Catching Silent Failures and Overdue Backups

By IT From Zero October 30, 2026

Set up BorgBackup and Restic monitoring with Prometheus via the Node Exporter Textfile Collector. Track exit codes and configure smart 27-hour overdue alerts.

Security

Installing and Configuring CrowdSec on Linux: A High-Performance Fail2ban Alternative to Block Botnets

By IT From Zero October 30, 2026

Real-world experience replacing Fail2ban with CrowdSec on Linux: mitigating distributed brute-force attacks, installing Security Engine, configuring Firewall Bouncer, and monitoring malicious IPs.

Development

A Guide to Integrating OpenTelemetry into Node.js: Setting Up Tracing, Metrics, and Logs for Microservices

By IT From Zero October 30, 2026

A detailed guide on integrating OpenTelemetry into Node.js applications to set up distributed tracing, metrics, and log correlation in a microservices environment.

Fedora

Building a PXE Boot Server on Fedora with dnsmasq and iPXE: A Complete Guide

By IT From Zero October 29, 2026

Step-by-step guide to setting up a PXE Boot Server on Fedora using dnsmasq (ProxyDHCP) and iPXE. Deploy OS installations over a 1Gbps LAN without IP conflicts.

Docker

How to Set Up Dev Containers in VS Code with Docker: Standardizing a Consistent Development Environment for Your Entire Team

By IT From Zero October 29, 2026

Setting up Dev Containers in VS Code with Docker ensures every team member works in the exact same environment. Say goodbye to version mismatch bugs and hours spent onboarding new developers.

Artificial Intelligence tutorial - IT technology blog

Integrating Qodo PR-Agent into GitHub Actions: Automated Code Reviews and Pull Request Summaries

By IT From Zero October 28, 2026

A comprehensive guide to integrating Qodo PR-Agent with GitHub Actions: automate PR summaries, risk scoring, and logic code reviews for just a few cents per PR.

Fedora

How to Use Nmstate on Fedora: Manage and Automate Server Networking with YAML

By IT From Zero October 28, 2026

Simplify network management on Fedora using Nmstate with declarative YAML. Learn how to configure static IPs, set up Linux Bridges for KVM, and leverage automatic rollback to avoid SSH lockouts.

Monitoring

Monitoring Proxmox VE with Prometheus and Proxmox VE Exporter: Managing VMs, LXCs, and Storage

By IT From Zero October 28, 2026

A detailed comparison of Proxmox VE monitoring strategies and a step-by-step setup guide for Prometheus and Proxmox VE Exporter via API tokens. Efficiently track CPU, RAM, disks, and ZFS/Ceph storage.

Centos

Installing ModSecurity v3 and OWASP CRS for Nginx on CentOS Stream 9

By IT From Zero October 28, 2026

A comprehensive guide to installing ModSecurity v3 and OWASP CRS for Nginx on CentOS Stream 9. Block SQLi and XSS, inspect audit logs, and tune false positives in production.

Fedora

How to Install and Configure CrowdSec on Fedora Server with firewalld Integration

By IT From Zero October 27, 2026

A detailed guide on installing CrowdSec and the firewalld bouncer on Fedora Server. Automatically detect and block SSH brute-force attacks and web exploits using crowd-sourced threat intelligence.