DevOps – Page 4 – ITFROMZERO

Monitoring tutorial - IT technology blog

Goodbye Nagios, Hello Icinga2: Monitoring Upgrades No Longer a ‘Nightmare’

By admin May 12, 2026

Tired of Nagios's outdated interface and messy configuration files? Discover Icinga2 – a modern monitoring solution that reduces configuration time by 90% with fast Telegram alert integration.

Centos

Postfix on CentOS Stream 9: A Smooth Mail Server Setup Guide to Escape the ‘Spam Folder’ Fate

By admin May 11, 2026

Don't let your system emails be unfairly blocked. Learn how to deploy a Postfix Mail Server on CentOS Stream 9 with TLS security standards to boost reliability and protect corporate data.

Security

Preventing BadUSB on Linux with USBGuard: Don’t Let Physical Ports Be Your Achilles’ Heel

By admin May 11, 2026

Secure your Linux system against BadUSB using USBGuard. A detailed guide on setting up peripheral whitelists, creating security policies, and monitoring USB ports for SysAdmins.

Centos

Mastering Performance Co-Pilot (PCP): The ‘Black Box’ for Monitoring CentOS Stream 9

By admin May 11, 2026

Don't let system issues remain a mystery. This guide helps you install and use Performance Co-Pilot (PCP) on CentOS Stream 9 for deep monitoring and historical data tracing.

Git

How to Package Code Changes with git diff and git archive for Incremental Deployment

By admin May 11, 2026

Learn how to combine git diff and git archive to precisely package changed files. This method optimizes deployment speed for large projects using incremental strategies.

Git

Git Reset vs Git Revert: Safe Ways to “U-Turn” for Developers

By admin May 10, 2026

Accidentally committed buggy code? Don't panic. This guide explains how to differentiate between Git Reset and Git Revert to fix mistakes without disrupting your team.

Python

uv: The Blazing Fast Python Package Manager – Goodbye Pip and Poetry?

By admin May 10, 2026

uv is a Rust-based Python package manager with extraordinary speed. Discover how uv serves as a perfect replacement for pip, poetry, and pyenv in Python project management.

Centos

Centralized Logging with Rsyslog on CentOS Stream 9: Streamline logs for peace of mind

By admin May 9, 2026

Centralized log management is a vital skill for DevOps. Learn how to configure Rsyslog on CentOS Stream 9 to consolidate logs from dozens of servers into one place, making debugging 5x faster.

MySQL

MySQL SSL/TLS: Don’t Let Your Data Go “Naked” in Transit (mTLS Configuration Guide)

By admin May 9, 2026

Don't let your MySQL data be intercepted. Here is a detailed guide on configuring SSL/TLS and mTLS for maximum security between your application and database server.

Git

Git Bundle: The Pro Way to Package Repositories for Offline Work

By admin May 8, 2026

Forget manual .zip compression. Git bundle is the professional way to package an entire repository and its commit history into a single file for offline workflows.