DevOps – Page 11 – ITFROMZERO

Mastering Policy-Based Routing (PBR) on Linux: Route Traffic Like a Pro

By admin April 20, 2026

Don't let backup traffic clog your main connection. A detailed guide on using Policy-Based Routing (PBR) on Linux to intelligently route traffic based on source IP and Port.

Docker

Dockerize Spring Boot: From 800MB ‘Giant’ to 150MB and the Ultimate Trick to Fix OOM

By admin April 20, 2026

Learn advanced Spring Boot Dockerization: Reduce image size from 800MB to 150MB and use smart JVM configuration to eliminate OOM errors in production.

Artificial Intelligence tutorial - IT technology blog

Optimizing Workflows with Custom Slash Commands in Claude Code

By admin April 20, 2026

A guide to setting up Custom Slash Commands in Claude Code to automate code reviews, testing, and refactoring, helping developers save time on manual prompting.

Creating Custom Skills for Claude Code: Don’t Let AI Be a “Stranger” in Your Project

By admin April 20, 2026

Teach Claude Code to understand your project using Custom Skills. A detailed guide on automating debugging, security scanning, and optimizing real-world workflows for developers.

Database

Mastering Database Auditing on PostgreSQL with pgaudit: Tracking Every Change and Securing Your System

By admin April 19, 2026

Stop losing data without knowing why. A detailed guide on installing and optimizing pgaudit on PostgreSQL to monitor every action and strengthen production system security.

Security

Self-hosting Vaultwarden with Docker: Lightweight and Secure ‘Personal’ Password Management

By admin April 19, 2026

Don't let passwords be your biggest weakness. This article guides you through deploying Vaultwarden with Docker to take full control of your data at near-zero cost.

Git

Git Filter-Repo: Permanently Remove Sensitive Data and Large Files from Repository History

By admin April 18, 2026

git-filter-repo is the officially recommended Git tool for permanently removing sensitive files, API keys, passwords, and large files from your entire repository history. This guide covers everything from installation and file removal to secret replacement, force pushing, and preventing future incidents.

Automating ‘Log Peeking’: Lightning-Fast Error Analysis and Summarization with DeepSeek and Python

By admin April 18, 2026

Learn how to build a Python script to automatically analyze error logs using the DeepSeek API. A practical solution to help DevOps summarize incidents and find root causes in seconds.

Docker

Cleaning Up Your Dockerfile with Hadolint: Stop Bloated and Insecure Images

By admin April 18, 2026

Are your Dockerfiles heavy and insecure? Use Hadolint to automate Best Practice checks. This guide covers image optimization, security patching, and CI/CD integration.

Docker

Migrating Docker Containers to a New Server: A ‘Manual’ but Rock-Solid Method

By admin April 17, 2026

Can't use a Docker Registry for migration? Try the docker save, load, and rsync combo. A detailed guide on safely moving containers and data to a new server.