Networking on Ricardo Martins — Cloud Architecture, Azure, Kubernetes & AI

No One Is Layoff-Proof: How Intellectual Capital Can Be Your Best Protection

Tue, 14 Oct 2025 10:00:00 -0400

Throughout my career, I’ve had countless conversations about career paths with colleagues, mentees, and professionals in transition. In those talks, I often share practices that have helped me personally along the way.

But this article is different. It’s transparent and honest. Although I’ve spoken about parts of my story with people close to me, this is the first time I’m sharing it so openly, including my mistakes, lessons, and reflections in a public space.

Private ARO Cluster with Access via JumpHost

Tue, 21 Jan 2025 10:00:00 -0400

This article was originally published at https://cloud.redhat.com/experts/aro/private-cluster/

A Quickstart guide to deploying a Private Azure Red Hat OpenShift cluster.

Prerequisites

Azure CLI

Obviously you’ll need to have an Azure account to configure the CLI against.

MacOS

See Azure Docs for alternative install options.

Install Azure CLI using homebrew

brew update && brew install azure-cli

Install sshuttle using homebrew

brew install sshuttle

Linux

See Azure Docs for alternative install options.

Import the Microsoft Keys

sudo rpm --import https://packages.microsoft.com/keys/microsoft.asc

Add the Microsoft Yum Repository

cat << EOF | sudo tee /etc/yum.repos.d/azure-cli.repo
[azure-cli]
name=Azure CLI
baseurl=https://packages.microsoft.com/yumrepos/azure-cli
enabled=1
gpgcheck=1
gpgkey=https://packages.microsoft.com/keys/microsoft.asc
EOF

Install Azure CLI

sudo dnf install -y azure-cli sshuttle

Prepare Azure Account for Azure OpenShift

Log into the Azure CLI by running the following and then authorizing through your Web Browser

az login

Make sure you have enough Quota (change the location if you’re not using East US)

az vm list-usage --location "East US" -o table

See Addendum – Adding Quota to ARO account if you have less than 36 Quota left for Total Regional CPUs

Creating a Lightweight Jump Host in Azure with sshuttle (No VPN Required)

Fri, 04 Oct 2024 10:00:00 -0400

When working with development or test environments in Azure, a common need is secure access to internal resources without exposing them directly to the internet. While VPN solutions are a robust way to achieve this, they can often be overkill for simple use cases, especially when you just want to access a few VMs or services for testing. A jump host combined with sshuttle offers a simple, VPN-like solution that can be quickly deployed and used to tunnel traffic to your Azure resources—without the overhead of setting up a full VPN.

Azure Front Door with ARO (Azure Red Hat OpenShift)

Tue, 09 Apr 2024 10:00:00 -0400

This article was originally published at Azure Front Door with ARO ( Azure Red Hat OpenShift ) | Red Hat Cloud Experts

Securing exposing an Internet facing application with a private ARO Cluster.

When you create a cluster on ARO you have several options in making the cluster public or private. With a public cluster you are allowing Internet traffic to the api and *.apps endpoints. With a private cluster you can make either or both the api and .apps endpoints private.

Setup a VPN Connection into an ARO Cluster with OpenVPN

Wed, 29 Mar 2023 10:00:00 -0400

This article was originally published at Setup a VPN Connection into an ARO Cluster with OpenVPN | Red Hat Cloud Experts

When you configure an Azure Red Hat OpenShift (ARO) cluster with a private only configuration, you will need connectivity to this private network in order to access your cluster. This guide will show you how to configure a point-to-site VPN connection so you won’t need to setup and configure Jump Boxes.