Distributed compute at scale is a bit complex back home in Mauritius - cloud service providers are literally an ocean away, and local policies have a history of hindering technological progress.

To "bring the cloud home", so to speak, a small team of tech enthusiasts decided to build a Kubernetes (K3s) cluster distributed across the country, in a bid to drive down costs while boosting resilience and availability.

This session goes over the challenges of setting up such a geographically distributed cluster on baremetal hardware, including fighting latency, connection issues, dynamic IPs, and distributed storage, all while keeping costs minimal.

While not entirely technical in nature, this presentation will go over some of the very unique challenges of living on an island in Africa with regards to The Cloud and digital infrastructure in general.

Licensed to the public under https://creativecommons.org/licenses/by-sa/4.0/

about this event: https://c3voc.de

With the types of products and projects that we regularly work on many of us don't get alot of exposure to new fancy technology, this talk aims to give a quick introduction to one of these topics, web assembly.

As some background, For the last year i've been helping to port Little Piggy Tracker (LGPT) a clone of the LSDJ audio software for Game Boy to various handheld devices. At the same time I saw a conference talk that was an introduction to web assembly, this prompted me to ask the ever dangerous question "how hard can it be?"

It turns out the answer to that question was not that hard so this talk will go through a brief overview of webassembly followed by the process

I went through to port my code along with some of the other challenges i've had porting LGPT to other devices.

Licensed to the public under https://creativecommons.org/licenses/by-sa/4.0/

about this event: https://c3voc.de

Open-source software has transformed the software industry, resulting in lower costs, greater security, and much greater flexibility for software developers and end users alike. The transparency provided by open-source software has improved security dramatically. Companies cannot hide back-doors in open-source software. Open solutions allow widespread review and testing, resulting in improved software quality and security.

While there are a few open-source hardware projects, most notably RISC-V, most hardware remains proprietary and closed-source. Engineers developing new products often use chips that are black-boxes. This is particularly problematic when developing solutions using hardware secure elements, small security chips used in IoT devices, crypto hardware wallets, mobile devices, industrial control systems, and other small devices. Developers have no visibility into the implementation of these devices, and cannot validate their security. In this presentation we will cover:

Challenges with closed source hardware secure elements:

Our experience with closed source secure elements (and the problems we found)

Benefits of open source/open architecture hardware secure elements:

Transparency, trust, and auditability

Rapid response to vulnerabilities

Community collaboration and innovation

Compliance & certification

Get your devkit at the workshop or order here and start playing! :)

https://145324096.hs-sites-eu1.com/samples-order-form

Documentation and tools:

https://github.com/tropicsquare

Licensed to the public under https://creativecommons.org/licenses/by-sa/4.0/

about this event: https://c3voc.de

Unsere langjährige Weggefährtin Greta teilt mit uns ihr fundiertes Wissen zu Menopause, hormonellen Hintergründen, emotionalen Symptomen und dem Einfluss persönlicher Lebensmuster. Sie nährt uns mit ihrem Wissensschatz, QiGong-Körperübungen und neuen, stärkenden Ideen zu einer Lebensphase, über die wir entweder gar nicht oder negativ sprechen – lasst uns das gemeinsam ändern!

Wechseljahre, ein Thema für uns alle, denn wir sind entweder selbst betroffen oder kennen Menschen, die es sind.

Language: DE Translation: YES Recording: YES

Our longtime companion Greta shares her in-depth knowledge of menopause, its hormonal background, emotional symptoms, and the influence of personal lifestyle patterns. She empowers us with her wealth of knowledge, QiGong exercises, and new, strengthening ideas about a phase of life that we either don't talk about at all or talk about negatively—let's change that together!

Language: DE Translation: YES Recording: YES

Licensed to the public under https://creativecommons.org/licenses/by/4.0/

about this event: https://c3voc.de

How do you scale quality in a fast-moving open source project like Uyuni?

In this talk, I’ll walk you through our journey adopting TestOps practices to bring automation, visibility, and resilience into our quality engineering process.

We’ll explore how infrastructure automation with Terraform and Salt laid the foundation for consistent, on-demand testing environments. From there, we introduced test observability using Prometheus and Grafana to analyze historical trends and gain visibility into test behavior over time.

A key part of our process includes tracking flaky tests and known issues through a custom system that connects our internal QE workflows directly with test reports.

To accelerate feedback loops, we implemented smart test selection in Pull Requests, targeting only the affected components with relevant end-to-end tests.

We also integrated synthetic monitoring of key product metrics into our daily pipelines, ensuring continuous insight into overall health.

Thanks to designing our own DevContainers, we improved engineer's experience on their IDEs.

We are also working on providing public AWS-based test reports reinforcing transparency.

Our journey is a story of small, iterative changes that helped us align quality with development at scale.

Licensed to the public under https://creativecommons.org/licenses/by-sa/4.0/

about this event: https://c3voc.de

Ever wonder what goes on behind the scenes to keep your favorite open-source projects (relatively) secure? Spoiler alert: it's not magic (mostly)!

This talk is a peek into the world of a security engineer who spends their days auditing code, hunting down vulnerabilities, and trying to make the open-source world a little less "Oops!" and a little more "Awesome!".

We'll dive into:

- What actually goes into a software audit. (Think less "spreadsheets," more "WTF is that?")

- The thrill (and occasional horror) of vulnerability research.

- Why this matters to you, even if you don't write code for a living. (Hint: it's about more than just avoiding the next big breach.)

- How we, as a community, can all contribute to making open source safer – because, let's face it, we're all in this together.

So, if you've ever been curious about the security side of open source, or just want to hear some war stories from the front lines, come join me! Let's talk about how we can make the open-source ecosystem more secure, one audit at a time. For you, for me, for everyone!

Licensed to the public under https://creativecommons.org/licenses/by-sa/4.0/

about this event: https://c3voc.de

# Kalpa Desktop is a Plasma desktop derived from MicroOS, and Tumbleweed, providing a immutable system base, with a containerized workflow, through distrobox and podman, and Desktop applications via Flathub.

## Kalpa grew out of the initial work by Richard Brown, with MicroOS Desktop, but has diverged over the past three years.

## Kalpa's focus is on providing users with:

- A well-tested and current Plasma-Wayland desktop

- A minimal installation, without a bunch of applications you may not want or need

- Robust stability, through the use of atomic updates, no more broken updates

- Just a "Damn Good™" basic desktop installation, that's designed to *be* a desktop, and that's all

# This presentation will present the current state of the Project, and examine the future roadmap for Kalpa Desktop.

Licensed to the public under https://creativecommons.org/licenses/by-sa/4.0/

about this event: https://c3voc.de

The current process of openSUSE membership application can be cumbersome and overall approval deem lengthy or inconsistent. This is due to way applications are made, some times information is lacking, there are back-and-forths, before membership officials can finalise an application. The current state of membership management has its limitations and it is not friendly, either for the members, the membership officials, or the election officials (who need the active membership info to run elections). In this lightning talk, I'll quickly go through some of the hurdles and possible solutions to ease the process.

Licensed to the public under https://creativecommons.org/licenses/by-sa/4.0/

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To ease the pain of testing container images, we’ve developed the `pytest_container` plugin for [pytest](https://pytest.org/). The plugin

makes it possible to use pytest to perform tests on containers and software inside containers. You don’t have to take care of pulling images, building

them, or picking ports on the host. You just describe your container setup and pass it to a test function. In return, the plugin gives you a connection

to the container. Using the connection, you can verify the container’s state using the [testinfra](https://testinfra.readthedocs.io/) python framework.

The plugin even cleans up after itself when you’re done.

In short, `pytest_container` makes it possible to write tests in Python: no need to build your own framework from scratch or worry about the boring

container plumbing tasks.

Join this talk to see `pytest_container` in action and learn how it can make your life easier!

Licensed to the public under https://creativecommons.org/licenses/by-sa/4.0/

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The Steam Deck has transformed mobile gaming — but in one crucial area, it still lags behind: security. Until now, no Steam Deck-focused Linux distribution has offered full disk encryption by default, leaving sensitive user data unprotected.

In this talk, I present Yuga Linux, a distribution built on openSUSE technologies, tailored specifically for the Steam Deck with a strong focus on security, compatibility, and gaming performance. I will explain how Yuga Linux leverages openSUSE packages and the Open Build Service (OBS) to build a custom kernel and all essential components to fully support both SteamOS's gaming and desktop modes — while adding something no other Steam Deck distribution currently offers: secure, user-friendly encryption.

You'll learn:

- Why encryption matters for handheld gaming devices.

- How I integrated tik, the installer from Aeon, to support TPM-backed full disk encryption.

- How I built deckrypt, a custom tool that allows users to input passwords using the Steam Deck's gamepad when fallback manual unlocking is needed.

- The challenges and key technical decisions behind building an openSUSE-based gaming distro for a new hardware category.

The session will include a live demo of the boot process, unlocking the encrypted system, and running Steam Gamemode and Desktop Mode seamlessly on Yuga Linux.

If you’re curious about gaming, Linux customization, TPM integration, or just want to see what the future of secure mobile gaming looks like, this talk is for you.

Licensed to the public under https://creativecommons.org/licenses/by-sa/4.0/

about this event: https://c3voc.de