DevOps – Page 3 – ITFROMZERO

Docker Socket Security: Don’t Let ‘/var/run/docker.sock’ Become a Backdoor for Hackers

By admin May 13, 2026

Don't let /var/run/docker.sock be a fatal vulnerability on your VPS. Discover how to use Tecnativa Proxy for Docker API permissions—high security for only 15MB RAM.

Database

Horizontal MySQL Sharding with Vitess: Scaling Billions of Records with Zero Downtime

By admin May 13, 2026

Learn how to shard MySQL with Vitess to scale your system to billions of records with zero downtime. Practical insights on Vindex, resharding, and performance optimization for DevOps.

Docker

Skopeo: Lightning-Fast Docker Image Copying Between Registries Without ‘Pulling’

By admin May 13, 2026

Forget manual Pull-Tag-Push. Skopeo lets you copy, inspect, and sync Docker images directly between registries instantly without wasting disk space.

Development

Building Professional CLIs with Go and Cobra: From ‘Zero’ to ‘Pro’ like Docker & Kubernetes

By admin May 13, 2026

Master the Cobra framework to build professional CLI tools with Go. Detailed guide on creating subcommands, managing flags, and integrating auto-completion like world-class tools.

Git

Cleaning Up the .git Folder: Using Git GC and Git Prune to Slim Down Your Repository

By admin May 12, 2026

Is a bloated .git folder slowing down your clones and wasting server resources? Learn how to use Git GC and Git Prune to effectively shrink your repository from 5GB down to 800MB.

Fedora

Automating Fedora Server with Ansible: Saying Goodbye to Manual Administration

By admin May 12, 2026

Managing 10 or 100 Fedora servers is no longer a nightmare with Ansible. A detailed guide on deploying an agentless automation system to save 80% of operational time.

Monitoring

Configuring Monit: The “Lifesaver” that Automatically Restarts Linux Services at 3 AM

By admin May 12, 2026

Don't let server crashes ruin your sleep. Learn how to configure Monit to automatically monitor and restart Nginx and MySQL when issues occur.

Virtualization

Vagrant & Ansible: The Perfect Duo for Eliminating Environment Mismatches

By admin May 12, 2026

Forget about environment mismatches between dev and production. This guide shows you how to combine Vagrant and Ansible to automate server setup with a single command.

Monitoring

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Tired of Nagios's outdated interface and messy configuration files?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.