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 …
Luiz Felipe F M Costa
M̶a̶k̶i̶n̶g̶ Hacking your life easier.
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 …