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00 - Cloud-Native App Dev

Service Mesh for Developers

The Fallacies of Distributed Computing Many years ago we moved away from monolithic applications and started to develop our app as a network of smaller services, the microservice architecture. This brought many advantages and we finally had fun again developing large business applications. But we were also being introduced to the Fallacies of Distributed Computing […]

Categories
00 - IT Automation & Management ansible automation cloud management configuration management Datacenter Operations

Welcome to the Age of Automation

The current situation At the moment 2 focus areas prevail in the IT industry. Flexibility In the age of ever-changing customer preferences, flexibility is an important asset. It is about providing customers with new opportunities to realize their goals. And to provide ease of use, ease of integration with existing processes and systems while doing […]

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00 - Cloud-Native App Dev Cloud Native Design DevOps github rest api

Full Stack Cloud Native Application: A Feedback Form

Introduction This article is a step by step example, how to develop, build and deploy a cloud native application with its infrastructure components. This cloud native application uses OpenShift as the underlying application platform with following features:  The use case is a feedback form, where users can give their feedback. The repositories for this application […]

Categories
00 - Cloud-Native App Dev

Approaching the Kubernetes Bridge – Multi-container Apps with Rootless Podman

In the year 2023 we celebrate the 10th anniversary of Docker and the 9th anniversary of Kubernetes. Container technology has now become mainstream. But recent advances in the Podman ecosystem prove that innovation in the container world is still happening at a strong pace. Podman 4 was released in February 2022 and brought considerable improvements […]

Categories
00 - Hybrid Cloud Infrastructure 00 - IT Automation & Management blog

A little bit of security is what I want

A quick tour of how a Kubernetes Management Platform like Red Hat OpenShift can help to ease developers day to day work and ensure security at the same time

Categories
00 - Cloud-Native App Dev 00 - Hybrid Cloud Infrastructure 00 - Industry 00 - IT Automation & Management 00 - Next-Gen Architecture, Culture & Processes 00 - Open Source Innovation

Review of 2022

OpenSourcerers 2022 is a wrap! It was packed with interesting articles covering a wide range of topics. There are 52 articles available covering high level topics down to the dirty technical details of using Red Hat’s products and other OpenSource technologies. Your Opensourcerers blog editors followed along of course! As we come from varying backgrounds […]

Categories
00 - Open Source Innovation Uncategorized

Happy Holidays

Without many words, the OpenSourcerers Chief Editors wish you all a relaxing vacation period, Merry Christmas and a happy New Year! We want to take the opportunity to thank all authors, supporters and readers of our blog entries. Seriously, enjoy your vacation! Stay healthy and stay prudent of the reindeers – and have a dance […]

Categories
00 - Cloud-Native App Dev

Using Quarkus to develop a multiplayer game – Chapter #2 – The server feeds the client

Quarkus is a fantastic Java runtime environment and framework. Read this article to learn how easy it is to use Quarkus to create the server part of a multi player game (with a JavaScript client, running in a browser). Learn how to easily integrate Apache Kafka, WebSockets, a database, Qute templating for reporting etc. This is part TWO of a multi part article series.

Categories
00 - Hybrid Cloud Infrastructure

Configuring custom domains for applications – the operator-way!

On a rainy Thursday evening, I was looking at a lemon tree and the lengthy URL of an application that I deployed some time ago on my OpenShift cluster. And I was wondering how I can make it shorter and human readable. Creating an edge route with a custom certificate is rather simple [1]. However, […]

Categories
00 - IT Automation & Management Datacenter Operations General Linux Security system management systems management

How often do you patch ?

Historically, there have been two schools of thought about patching: Patch as soon as a patch is available to eliminate security risks versus testing the patch extensively before it is applied to production systems ( aka “Never change a running system” ). One of the main reasons why you might feel the need to patch […]

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