Networking on Rafael Zago

TCP/IP: origins and evolution of the protocols

Sat, 14 Dec 2024 00:00:00 -0300

TCP/IP protocols: a complete introduction

ARPANET and the origins of TCP/IP

The story of TCP/IP starts in the late 1950s, at the height of the Cold War. The U.S. Department of Defense (DoD) wanted a command-and-control network that could survive a nuclear attack. Military communications at the time relied on the public telephone network, which looked fragile: rigid hierarchy, little redundancy.

Early research and Paul Baran’s contributions

Around 1960, the DoD hired the RAND Corporation to look for a solution. Paul Baran proposed a highly fault-tolerant distributed design that used digital packet switching instead of analog signals. Large carriers like AT&T resisted at first, but Baran’s idea laid the groundwork for modern resilient networks.

Skupper workshop: Patient Portal on Kubernetes

Tue, 02 Jul 2024 00:00:00 -0300

Description

This workshop introduces Red Hat Service Interconnect, an application integration solution that lets different systems communicate efficiently and securely.

Solution architecture

Service topology

Workshop outline

Sign in to Red Hat Developer.
Create an OpenShift cluster.
Access the OpenShift cluster.
In the Red Hat OpenShift Sandbox project, open your project.
Create a virtual machine with OpenShift Virtualization.
Install packages on the virtual machine:
- podman
- kubernetes-client
- skupper
- oc
- wget
Deploy the database with Podman.
Deploy the application frontend and backend.
Configure Service Interconnect (Skupper) so the database running under Podman can talk to the app on OpenShift.
Access the application and confirm communication works.
Closing notes.

Links

Resource	Link
[1] Red Hat Developer	https://developers.redhat.com/
[2] OC	https://docs.openshift.com/container-platform/4.15/cli_reference/openshift_cli/getting-started-cli.html
[3] Skupper	https://skupper.io/

Prerequisites

A Red Hat Developer account
Basic Kubernetes knowledge
Basic Red Hat OpenShift knowledge
Basic Podman knowledge
Google Chrome preferred—it lets you paste commands into the VM console over browser VNC.

Step by step

Go to Red Hat Developer and sign in with your account.

OpenShift AI and Skupper: insurance fraud prevention

Mon, 17 Jun 2024 00:00:00 -0300

Description

This workshop demonstrates how to use Skupper to connect local data services to cloud-based AI/ML environments. The workshop includes a Go application in a podman container that exposes internal data for Skupper connection. The AI/ML model training is performed in an OpenShift AI cluster on AWS using Openshift AI/ML services.

Disclaimer

This lab uses the example from the AI/ML Workshop created by the Red Hat AI Services team. The original workshop is available on GitHub and includes all the necessary information to run the lab. The lab was adapted to use Skupper to connect the local data services to the cloud-based AI/ML environment.

TemPy: IoT with Raspberry Pi, Skupper, and Grafana

Thu, 15 Feb 2024 00:00:00 -0300

Description

This project is a proof of concept for an IoT architecture using a Raspberry Pi and a temperature sensor that exposes the temperature data through a REST API. Along with the REST API, there is a cloud integration with any cloud provider using Skupper that enables the data to be visualized in a Grafana dashboard.

Clone the repository and follow the instructions to run the project. https://github.com/rafaelvzago/skupper-tempy

git clone https://github.com/rafaelvzago/skupper-tempy.git

Architecture

Skupper: multicloud app network in a few commands

Sat, 01 Oct 2022 00:00:00 -0300

References and technologies used

Tools

A computer with minikube [2] installed;
A terminal to run the commands;
kubectl > 1.15 [6] or newer.

Solution overview

Skupper [1] lets you connect two or more cloud environments in a non-intrusive, secure way. Those environments can sit on different cloud providers—AWS, GCP, Azure, and others—or on native Kubernetes clusters.

Networking on Rafael Zago

TCP/IP: origins and evolution of the protocols

TCP/IP protocols: a complete introduction

ARPANET and the origins of TCP/IP

Early research and Paul Baran’s contributions

Skupper workshop: Patient Portal on Kubernetes

Description

Solution architecture

Service topology

Workshop outline

Links

Prerequisites

Step by step

1. Sign in to Red Hat Developer

OpenShift AI and Skupper: insurance fraud prevention

Description

Disclaimer

TemPy: IoT with Raspberry Pi, Skupper, and Grafana

Description

Table of Contents

Architecture

Skupper: multicloud app network in a few commands

References and technologies used

Tools

Solution overview