DevOps Archives - Page 48 of 63 - ITFROMZERO

Monitoring tutorial - IT technology blog

Building a Professional Status Page with Statping-ng: Fast, Lightweight, and Free

By IT From Zero April 30, 2026

Build a professional Status Page with Statping-ng and Docker. This guide covers Telegram configuration and practical tips to avoid alert fatigue based on real-world experience.

MySQL

MySQL on Kubernetes: Don’t Let Your Data Vanish – Practical Experience with StatefulSet

By IT From Zero April 30, 2026

A practical guide to deploying MySQL on Kubernetes. Explore how StatefulSet and Persistent Volume protect your database and learn performance optimization tips from real-world experience.

Security

Securing Secrets in GitHub Actions: Don’t Leak API Keys Due to a Moment of Negligence

By IT From Zero April 29, 2026

Don't expose API keys and tokens on GitHub. A detailed guide on using GitHub Actions Secrets to protect sensitive information and deploy CI/CD securely.

Virtualization

Customizing Linux Cloud Images with virt-customize: Fast, Efficient, No VM Boot Required

By IT From Zero April 29, 2026

Forget manual configuration. Use virt-customize to inject SSH keys, install packages, and customize Linux Cloud Images in just 60 seconds without booting the VM.

Development

Implementing Feature Flags with Unleash: A Safety Brake for Your System Without Redeploying Code

By IT From Zero April 29, 2026

Manage features safely with Unleash Feature Flags. Learn how to set up a self-hosted instance, integrate with Node.js, and roll out features without redeploying code.

Monitoring

Elastic APM: Deep-Diving into Code and Diagnosing Systems Without the Guesswork

By IT From Zero April 29, 2026

Stop running your systems in the dark. A detailed guide on using Elastic APM to deep-dive into code, detect slow queries, and optimize real-world application performance.

Python

Cleaning Up Python Code with Decorators: From ‘Copy-Paste’ Nightmares to Professional Programming

By IT From Zero April 29, 2026

Learn how to use Python Decorators to eliminate boilerplate code, optimize logging, and manage permissions. Real-world insights to make your scripts cleaner and more professional.

Network

Mastering Network Namespaces: Building Your Own Isolated Network Lab on Linux

By IT From Zero April 29, 2026

A detailed guide on using Network Namespaces on Linux for network isolation. A lightweight VM alternative for testing applications and system management.

Linux

How to Use strace to Debug Applications on Linux: Tracing System Calls and Finding Root Causes Effectively

By IT From Zero April 28, 2026

strace lets you trace every system call a process makes on Linux — from file opens and network connections to lock waits — without needing source code or recompiling. This guide covers practical strace usage for debugging permission errors, missing files, hanging services, and I/O bottlenecks.

Docker

Distroless Docker Images: Remove Unnecessary Shell and OS to Harden Container Security

By IT From Zero April 28, 2026

Google's Distroless Images strip the shell, package manager, and unnecessary OS components from Docker containers — significantly reducing the attack surface. This guide covers how to use multi-stage builds with Distroless for Go, Python, and Java, along with real-world vulnerability comparison and testing techniques.