DevOps

GitLab CI Workbook - Hands‑On CI/CD Essentials

A concise, practical guide designed for people who want to learn Gitlab CI essentials, step‑by‑step. Walks you through pipeline fundamentals, job orchestration, reusable patterns through templates and components, so you can confidently automate builds, tests, and deployments in any project.

DevOps

Real‑World DevOps How‑Tos

A set of no‑nonsense DevOps guides that cut through theory and get straight to practical, real‑world solutions.

DevOps

Pre‑Commit Essentials - A Quick Guide to Setup, Hooks, and Usage

A practical guide to installing pre‑commit, configuring hooks, and using them effectively. Packed with practical examples and ready‑to‑copy snippets, it’s the fastest way to improve code quality with minimal effort.

DevOps

Semantic Release with Gitlab CI and To-Be-Continuous

Completely automate your Semantic Versioning workflow with Gitlab CI, semantic-release and to-be-continuous. No more human emotions in versioning, no more manual bumps, time gained, energy saved.

Containers

Docker Visual Cheat Sheets

Learn Docker faster with these visuals covering essential stuff. Why Docker, the architecture, images, registries, containers, core commands and more.

Code

Python Modules and Packages

Understand Python modules, modules import mechanism (import syntaxes, search paths) and modules attributes. Understand Python packages, learn how to create packages distributions and make them available to others.

Containers

Docker Workbook - Your Guide to Containerization

A companion that helps you understand and manage containers with ease, using Docker and Docker Compose. Provides essential information you need to create and store optimized container images for running production-grade applications.

Cloud

Terraform Workbook - Your Guide to Infra as Code (IaC)

A companion that helps you create and run Terraform projects with ease. Provides simple explanations and sample contents for common Terraform files, useful related documentation links and essential management commands.

AI

Gemini CLI: Boost Productivity Without Sacrificing Privacy

Understand Gemini CLI ecosystem and get the essential knowledge you need to be able to properly take advantage of Google's Gemini generative AI model right into your shell without compromising your privacy.

Linux

Understanding Linux Cgroups

Cgroups are one of the Linux Kernel features making containers a reality. In this post, we are going to learn what Linux Cgroups are and how they work through simple explanations, illustrations and examples.

Linux

Understanding Linux Namespaces

Namespaces are one of the Linux Kernel features making containers a reality. In this post, we are going to learn what Linux Namespaces are and how they work through simple explanations, illustrations and examples.

Linux

How to build a custom Linux kernel from sources

Want to customize the kernel of your Linux distribution ? Enable or disable specific features ? In this post, you will learn how to compile your custom Linux Kernel and configure your system to boot from it.

Linux

How to interact with Linux Kernel through procfs and sysfs

Understand Linux procfs and sysfs pseudo filesystems and learn how to interact with the kernel to view and edit runtime parameters and get information about the computer hardwares.

DevOps

Key monitoring concepts you should be aware of

Discover key monitoring concepts you need to be aware of when working with monitoring and time series visualization tools like Prometheus, Victoria Metrics or Grafana

Code

Managing Python projects with Poetry

Poetry is a packaging and dependency management tool for Python. It can be used to quickly bootstrap a Python project, manage the dependencies, and do packaging stuff. Here is a quick overview.

Linux

Linux SysV init and Systemd essentials

System V init and Systemd are two important softwares in Linux. They start essential system programs during boot and ensure they are always running. Here we give you the essential information for easy administration and show you how to find specific documentations to go further.

Linux

Linux GRUB legacy and GRUB2 essentials

A simple guide to help you quickly find your way when working on Operating Systems boot topics with GRUB as bootloader, on Debian and Red Hat based Linux distributions.

Containers

Kubernetes workbook

A guide to ease your work with Kubernetes. It contains simple explanations, examples and tips to help you understand important concepts, the kubectl tool and ease the creation and management of a bunch of Kubernetes resources.

Cloud

Understanding GCP Load Balancers

In this post, we will try to give you the big picture about GCP Load Balancing and answer the following questions: how Load Balancing works in GCP, what are the types of GCP Load Balancers and their purposes, which components make a GCP Load Balancer... with examples and links to go deeper.

Containers

Understanding Kubernetes Pods

The Pod is a key concept to understand when working with Kubernetes. In this post, we are going to get an overview on Kubernetes Pod and other interesting concepts related to it like scheduling, lifecycle hooks, probes and more.

Computer

Understanding BIOS and UEFI

BIOS and UEFI are important computers components. They are shipped into the motherboard and help in loading operating systems. But... what is BIOS, what is UEFI, how they work ?

Cloud

Get started with Google Cloud Platform #2

In this second part, we will familiarize with Google Cloud command line utility (gcloud) and see how we can manage a bunch of GCP resources through that CLI.

Cloud

Get started with Google Cloud Platform #1

In this first part, we introduce Google Cloud Platform through a simple overview providing essential info for starting our GCP journey with ease.

Containers

Managing Kubernetes clusters with kubeadm

Familiarize yourself with Kubernetes architecture and components. Learn how to run Kubernetes clusters on Linux machines using kubeadm. Freeze cluster version and perform upgrades anytime without service disruption.

Containers

Even more powerful Helming with Helmfile

Leverage Helmfile declarative approach to bring visibility and reproductibility to Helm releases states and ease team work. Get familiar with Helmfile and explore powerful features for managing a bunch of Helm releases easily and securely.