DevOps – Page 11 – ITFROMZERO

SSH Bastion Host (Jump Server) Configuration Guide: A Secure Gateway for Linux Systems

By admin July 24, 2026

Stop exposing internal servers to the Internet. Learn how to configure a professional SSH Bastion Host (Jump Server) to manage access and securely log Linux system activity.

Virtualization

Vagrant + KVM/Libvirt: How to Double Your VM Speed on Linux

By admin July 22, 2026

Don't let VirtualBox slow down your development on Linux. Switch to KVM/Libvirt to enjoy native performance, 15-second VM boots, and better system resource efficiency.

Git

Guide to Using git-sizer: “Rescuing” Bloated and Sluggish Git Repositories

By admin July 22, 2026

Is a bloated Git repo slowing down your team? Learn how to use git-sizer to find junk files, massive blobs, and the most effective ways to optimize Git history.

Fedora

Installing Node.js and PM2 on Fedora Server: Deploying JavaScript Applications in Production with SELinux and firewalld

By admin July 19, 2026

A step-by-step guide to installing Node.js and PM2 on Fedora Server and properly handling SELinux and firewalld to deploy JavaScript applications in production. Covers SELinux port labeling, network connect boolean, PM2 cluster mode, and systemd integration.

Virtualization

Automating Proxmox VE with Python: Stop Wasting Time on Manual Clicks

By admin July 19, 2026

Automating Proxmox VE with Python saves you hours of manual clicking. A detailed guide on cloning VMs, managing snapshots, and monitoring resources automatically.

Docker

Optimizing Docker Compose: Using YAML Anchors and Merge Keys to Clean Up Redundant Code

By admin July 19, 2026

Learn how to use YAML Anchors and Merge Keys to clean up Docker Compose. A solution for tidier, more maintainable, and professional microservices configuration files.

Python

Automating Docker with Python: From Bash Scripts to a Professional SDK

By admin July 18, 2026

No more typing Docker commands by hand. Learn to use the Docker SDK for Python to automate Container, Image, and Network management — with real-world error handling experience included.

Docker

Docker Scout: A ‘Magnifying Glass’ for Security Vulnerabilities and How to Patch Images from CLI to CI/CD

By admin July 18, 2026

Learn how to use Docker Scout to scan for security vulnerabilities, patch critical CVEs, and automate testing with GitHub Actions to protect your images.

Ubuntu

Building Your Own S3-Compatible Object Storage with MinIO on Ubuntu Server

By admin July 18, 2026

A detailed guide on installing MinIO Object Storage on Ubuntu Server. The perfect AWS S3 alternative to optimize storage costs and boost application performance.

Python

Building a Telegram Bot with Python and python-telegram-bot: Receive Notifications and Control Your Server Remotely

By admin July 17, 2026

A step-by-step guide to building a Telegram Bot with Python and python-telegram-bot v20+ for remote server monitoring and control. Covers command handling, inline confirmation keyboards, proactive alerts from cron jobs, and running the bot as a systemd service.