DevOps – Page 2 – ITFROMZERO

Git Submodule vs Git Subtree: Don’t Let Shared Libraries Become Your Project’s ‘Black Hole’

By admin April 7, 2026

Analyzing the pros and cons of Git Submodule and Git Subtree. A guide to managing shared libraries effectively, avoiding code conflicts, and optimizing developer workflows.

Fedora

Automating Container-Native Infrastructure with Fedora CoreOS and Ignition

By admin April 6, 2026

A detailed guide to deploying Fedora CoreOS and Ignition. Automate infrastructure configuration and manage Linux servers using Infrastructure as Code.

Linux

Managing Multiple Java Versions on Linux: Stop Doing It Manually, Use SDKMAN!

By admin April 6, 2026

Forget manual Java installation! SDKMAN! lets you install, manage, and switch between Java 8, 11, 17, and 21 on Linux with simple commands and no root access.

Fedora

Need Ultra-Lightweight Containers on Fedora? Try systemd-nspawn Instead of Docker

By admin April 6, 2026

Explore systemd-nspawn on Fedora: An ultra-lightweight container solution with instant boot times and minimal resource usage compared to Docker or Podman.

Database

PostgreSQL Monitoring: From ‘Information Blindness’ to a Professional Alerting System

By admin April 6, 2026

Don't wait for a database crash to find out something's wrong. Here is a detailed guide to setting up professional PostgreSQL monitoring with Prometheus and Grafana based on real-world experience.

Docker

Docker Rootless: Don’t Let One App Vulnerability Take Down Your Entire Server

By admin April 5, 2026

Secure your Docker server with Rootless Mode: run containers without root privileges to eliminate the risk of full system takeover through application vulnerabilities.

Security

Mastering SELinux Custom Policies: Don’t Disable Security Just Because of ‘Permission Denied’

By admin April 5, 2026

Don't disable SELinux just because of a Permission Denied error. Learn how to create Custom Policies to protect Linux servers using the Principle of Least Privilege.

Docker

Docker Macvlan: Assign Static IPs Directly from Your Router to Containers (Goodbye NAT)

By admin April 5, 2026

Forget the worries of Port Mapping and NAT. This guide helps you assign static IPs directly from your router to Docker containers using Macvlan Networking, allowing them to act as true physical devices.

Docker

Traefik: The Ultimate Reverse Proxy Solution for Docker (Auto SSL, 5-Minute Setup)

By admin April 4, 2026

Configuring Traefik as a Reverse Proxy for Docker helps automate Let's Encrypt SSL. Manage dozens of domains professionally using only Docker Labels.

Docker

Docker Log Management: Prevent Your Disk from Filling Up with Massive Log Files

By admin April 4, 2026

Don't let Docker log files crash your server. Learn how to configure Log Rotation, use log commands efficiently, and deploy centralized log management systems like Loki and ELK.