Force HTTPS Over SSH for GitHub
A quick guide to authenticate with GitHub over HTTPS using the gh CLI and make Git always use HTTPS, even when remotes are set to SSH. Authenticate with GitHub …
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Using a YubiKey 5C for SSH and Git Authentication on Linux
Your SSH private key sits on your disk, protected by (hopefully) a passphrase. But passphrase or not, it’s still a file — and files can be stolen, copied, …
Setting Up YubiKey 5C for sudo on Fedora Linux
Want to ditch typing your password every time you run sudo? Here’s how to use your YubiKey 5C with Fedora’s PAM system for passwordless (or 2FA) …
Easy way of opening and closing ports on iptables
A very common struggle I have in Linux server environments is the usage of iptables. It is a very powerful and performance efficient tool to configure network …
Using Playwright MCP Server with Google Chrome Flatpak on Linux
The Model Context Protocol (MCP) has revolutionized how AI assistants interact with external tools and services. One particularly powerful integration is the …
How to Deploy Nginx Proxy Manager on MikroTik RouterOS Using Containers
Use the MikroTik RouterOS device as a reverse proxy server using Nginx Proxy Manager container. This guide walks you through enabling container support on …
Automating AppImage Updates with Gear Lever URL Configurations
Managing AppImage updates can be tedious when done manually. Gear Lever provides custom update URLs for GitHub releases, but finding the right URL pattern …
How to encode videos for DaVinci Resolve on Linux
A common problem if you are starting creating video content is the format issues you will face when moving files from different sources to your video editor. In …
podman + docker compose and daemon on Linux
I’m setting up my developer machine and this is a common situation I face working on some opensource projects. Podman itself already is a great …
How to forward a TCP port using systemd + socat
A common problem I need to solve with my web servers are simple TCP port forwarding. This allows you to redirect an application traffic, from a HTTP server for …
How to resize Ubuntu server LVM disk to all available disk space
I need to resize a virtual machine disks multiple times a year. Most of the time, I’m lazy enough to just jump into the Cockpit web interface and change …
How to install Ollama + Open-WebUI on Fedora/RHEL using podman Quadlets
Ollama is a powerful tool for running large language models locally. This guide walks you through setting up Ollama on Fedora using Podman Quadlets, ensuring it …
How to install Syncthing on Fedora/RHEL using podman Quadlets
The Syncthing is the best Peer-to-Peer solution I’ve ever used. It is flexible, has clients for most platforms, decentralized, and open source. This guide …
Backup is not Disaster Recovery
You probably already heard that RAID is not a backup. When world is ending and everything is burning, we also discover that a backup is not a Disaster Recovery …
Running Vagrant + libvirt on Bluefin or Aurora
Vagrant is one of the greatest way to develop solutions using virtual machines, with all the isolation that a container can’t provide. Unfortunately, …
Don't be a target: Password checking and hash functions
Handling with checking passwords is always a critical task and it is important to understand the mechanisms behind of it to create a proper solution. Also, …
How to use minikube + qemu2 + ingress-dns on macOS
This is a guide on how to use minikube and qemu2 on macOS to run Kubernetes locally on your machine. The guide covers the installation of required packages …
How to securely share secrets with podman containers
Podman is a daemon-less, open-source, Linux native tool designed to make it easy to find, run, build, share, and deploy applications. It offers many data …
Gimp - the power of the plugins
GIMP is a free, open-source image editing software that offers a wide range of features. Its plugins extend functionality for color correction, special effects, …
Steam Deck tricks
The Steam Deck is the portable device of my dreams. It’s an impressive Linux computer with great game inputs and impressive game compatibility. It allows …
Creating presentations with Marp and Draw.io in VSCode
Creating presentations can be a daunting task, but it doesn’t have to be. With VSCode, you can make great presentations with the help of Marp and Draw.io. …
Managing multiple Kubernetes clusters with kubectl
Learn how to use kubectl CLI to manage multiple Kubernetes clusters. Import new config, add cluster, user, and context. Switch between contexts to manage …
Ansible 101 - The basics
Ansible is an open-source tool for automating infrastructure and application deployment, using simple YAML language. It’s used to manage and automate …
How to use NVIDIA GPU on podman (RHEL 9 / Fedora 42)
Podman is a container engine for developing, managing, and running containers on your Linux System. With the support for NVIDIA GPUs, you can easily run …
How to create a database and user for your new app on PostgreSQL
Creating a database and user for a single application is a common task for developers and database administrators in small and medium environments. In this …
DaVinci Resolve 19 on Fedora 41 (NVIDIA GPU)
(UPDATE for DaVinci Resolve 19 on Fedora 41) DaVinci Resolve is a powerful video editing and color grading software that is used by professionals in the film …
[WIP] How to create a modern pytest dev environment with vscode
I started in my new position 1 year ago as a Quality Engineer at Red Hat. I was struggling to find a better way to design, create, and run tests, so I decided …
How to create a service for Fedora/RHEL (systemd)
A common task for Linux administrators is to create a background task that must be executed in the background. The most popular service manager in the Linux …
How to commit encrypted files to Git with Mozilla SOPS
It’s a common scenario where it’s needed to share some keys/secrets with other members of the project team and it’s also common that those …
Ansible tricks
I want to show you some tricks and solutions that I designed along my journey automating stuff with Ansible. To use these tricks doesn’t matter if you are …
How to create a k3s cluster with Nginx Ingress controller
One of the easiest ways to install a Kubernetes distro for personal projects is using k3s, but you may not want to use some features built-in, like traefik as …
Using rsync to backup Linux servers
Imagine that you have some servers running applications and you need to find a way to backup the files and preserve their properties, like the user, group, …
How to run Vagrant + VirtualBox on WSL 2 (2021)
HashiCorp Vagrant provides the same easy workflow regardless of your role as a developer, operator, or designer. It leverages a declarative configuration file …
Enforce MFA for IAM users
It’s not easy to protect AWS accounts and one of the most common issues is related to credentials leakage that gives access even to all company’s …
About me and my career so far...
I am a Software Quality Engineer at Red Hat, on the Ansible Automation Platform. The product I’m working on empowers multiple industries, like financial, …
How to install CKAN 2.9.0 using Docker Compose
This guide will show you how to install CKAN platform using docker-compose . What reference should I choose? Does exist many different guides available on …
Create a Linux Server for VM and manage through the web with KVM + Kimchi + Wok
Kimchi is an HTML5 based management tool for KVM. It is designed to make it as easy as possible to get started with KVM and create your first guest. - Kimchi …
How to tunnel Web Browser using SOCKS5 through SSH
Let’s considering you need to access some websites through an intranet or using some machine’s IP you already have SSH credentials. You can use your …
Setup SSH login to don't ask password again
If you use the SSH a lot of time or want to sync files, probably you need to type your password many times a day. The way to avoid this problem and create a …
How to install MySQL and phpMyAdmin with Docker
Learn the simplest way to start your MySQL database with Docker with only two commands. Docker is a project that automates the deployment of applications inside …
How to install UFW on Fedora 25 (Uncomplicated Firewall)
The “Uncomplicated Firewall” was designed to be a simple tool to setup iptables and create a full firewall structure with simple commands. On this tutorial, …
CloudFlare Flexible SSL + phpMyAdmin + Linux [Tutorial]
Use a secure connection to your MySQL databases with phpMyAdmin + CloudFlare Flexible SSL. 0 - Preparing your domain and active CloudFlare If you need help to …
Swap - How to create a swap file
The swap file is used to “expand” the memory RAM, so increases the capability to execute more software at the same time. In a GNU/Linux, it’s possible to create …
How to set a static IP to Ubuntu Server
In computing, a network interface is a system’s (software and/or hardware) interface between two pieces of equipment or protocol layers in a computer network. A …