DevOps – ITFROMZERO – Share tobe shared!

Optimizing Docker Image Size: Practical Experience for Faster, Lighter Applications

By admin March 19, 2026

This article shares practical experience on optimizing Docker image size after 6 months of production deployment. It guides through methods like multi-stage builds, using compact base images, and cleanup techniques to reduce resources and speed up application deployment.

Docker

Configuring Docker Compose Overrides for Multiple Environments: Effectively Separating Dev, Staging, and Production

By admin March 17, 2026

Managing Docker applications across development, testing, and production environments often presents many challenges. Instead of duplicating configurations or using complex environment variables, Docker Compose Override offers an effective solution for separating configurations, saving resources, and simplifying the deployment process.

Development

Build an Auto-Deploy Webhook: No More SSH at 2 AM

By admin March 16, 2026

A practical guide to building a Python Flask webhook server that automatically deploys when you push code to GitHub. From writing the script and configuring systemd to connecting with GitHub Webhooks — set it up once, use it forever.

Development

Introduction to Infrastructure as Code: A Guide to Automating AWS Infrastructure with Terraform

By admin March 15, 2026

After 6 months running Terraform in production, I walk through the entire journey — from realizing ClickOps was a problem, to installation, writing configs, and safely managing state files with an S3 backend. This article focuses on real-world lessons, not theory.

Database

Guide to Installing and Optimizing MongoDB for Production Environments

By admin March 14, 2026

Deploying MongoDB in a production environment is more than just basic installation. This article analyzes common issues, core causes, and provides detailed guidance on installation, Replica Set configuration, indexing optimization, security enhancement, and scaling with Sharding, helping your application run stably and efficiently.

Virtualization

Automate Virtual Machine Deployment on Proxmox/KVM with Cloud-Init: Create Templates and Customize on First Boot

By admin March 13, 2026

Discover Cloud-Init on Proxmox/KVM: The solution for automating virtual machine deployment and configuration from the first boot. Save time, reduce errors, and increase consistency for your homelab infrastructure.

Git

Git Stash: A Quick Solution When Urgent Issues Interrupt Unfinished Work

By admin March 12, 2026

Deep in coding, but your boss calls with an urgent production bug? Git stash is the tool to temporarily save your work without committing, keeping your branch clean to handle emergencies. This article provides a detailed guide on using git stash, from basic to advanced commands, helping you master this essential tool.

MySQL

Setting Up and Configuring ProxySQL: A Connection Pooler and Load Balancer Solution for MySQL Production

By admin March 12, 2026

ProxySQL is a powerful connection pooler and load balancer that optimizes performance and stability for MySQL production. This article provides a guide to basic and advanced installation and configuration, along with practical tips for effective ProxySQL deployment, addressing connection management and load distribution issues.

Ubuntu

Installing and Configuring Squid Proxy Server on Ubuntu: Effective Internet Access Control

By admin March 11, 2026

In an enterprise environment, internet access control is essential. This article shares practical experience on installing and configuring Squid Proxy on Ubuntu. This solution helps you manage bandwidth, block unwanted websites, and enhance network security, based on the success of the DevOps team.

Fedora

Guide to Migrating from Docker to Podman on Fedora: Safer, More Efficient for Devs

By admin March 10, 2026

This article provides a detailed guide on migrating from Docker to Podman on Fedora. It analyzes pros and cons, explains Podman installation, rootless container configuration, and effective Docker Compose alternatives for a safer, optimized development environment.