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Provision Kubernetes NFS clients on a Raspberry Pi homelab

ven, 06/05/2020 - 09:01

Ephemeral containers are useful, but sometimes data needs to persist between containers or be shared among multiple containers. The solution is mounting external volumes inside the containers, and this is done in Kubernetes with persistent volumes. In large, public cloud deployments, Kubernetes has integrations with the cloud providers' block-storage backends, allowing developers to create claims for volumes to use with their deployments, and Kubernetes works with the cloud provider to create a volume and mount it in the developers' pods.


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Reading about open source in French

ven, 06/05/2020 - 09:00

English speakers have so many wonderful open source resources that it's easy to forget that communications in English aren't accessible to everyone everywhere. Therefore, I've been looking for great open source resources in Spanish and French, so I can recommend them when the need arises.


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Build a Kubernetes cluster with the Raspberry Pi

ven, 06/05/2020 - 09:00

Kubernetes is an enterprise-grade container-orchestration system designed from the start to be cloud-native. It has grown to be the de-facto cloud container platform, continuing to expand as it has embraced new technologies, including container-native virtualization and serverless computing.


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Improve Linux system performance with noatime

jeu, 06/04/2020 - 09:01

Whenever I upgrade Linux on my home computer, I have a list of tasks I usually do. They've become habits over the years: I back up my files, wipe the system, reinstall from scratch, restore my files, then reinstall my favorite extra applications. I also make a few system tweaks. I've been making some of these tweaks for so long that I recently wondered if I still needed to do them.


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Using AppImage for Linux package management

jeu, 06/04/2020 - 09:00

A big part of administrating Linux machines—especially remote machines—is managing and installing software. When something goes wrong with a local application or when something on the filesystem breaks and needs fixing, you're often going to want to push updates without having to travel many miles to sit down in front of a physical screen.


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Code your hardware using this open source RTOS

mer, 06/03/2020 - 09:02

In general computing, an operating system is software that provides a computer's basic functions. It ensures that a computer detects and responds to peripherals (like keyboards, screens, mobile devices, printers, and so on), and it manages memory and drive space.


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5 common open source testing myths debunked

mer, 06/03/2020 - 09:00

Open source tools are constantly changing the landscape of testing, and the community around these tools is bigger and more vocal than ever.

The first-ever State of Open Source Testing Survey examines the latest trends and developments across the software development industry. This survey received over 2,000 responses from practitioners across the behavior-driven development, functional testing, and load testing domains.


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Exploring Algol 68 in the 21st century

mer, 06/03/2020 - 09:00

In the preface to his excellent textbook Algol 68: A First and Second Course, Andrew McGettrick writes:

"This book originated from lectures first given at the University of Strathclyde in 1973-4 to first-year undergraduates, many of whom had no previous knowledge of programming. Many of the students were not taking computer science as their main subject but merely as a subsidiary subject. They, therefore, served as a suitable audience on whom to inflict lectures attempting to teach Algol 68 as a first programming language."


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Edge investments, data navigators, and more industry trends

mar, 06/02/2020 - 13:02

As part of my role as a senior product marketing manager at an enterprise software company with an open source development model, I publish a regular update about open source community, market, and industry trends for product marketers, managers, and other influencers. Here are five of my and their favorite articles from that update.


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Control your computer time and date with systemd

mar, 06/02/2020 - 09:02

Most people are concerned with time. We get up in time to perform our morning rituals and commute to work (a short trip for many of us these days), take a break for lunch, meet a project deadline, celebrate birthdays and holidays, catch a plane, and so much more.


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Using pandas to plot data in Python

mar, 06/02/2020 - 09:02

In this series of articles on Python-based plotting libraries, we're going to look at an example of making plots using pandas, the hugely popular Python data manipulation library. Pandas is a standard tool in Python for scalably transforming data, and it has also become a popular way to import and export from CSV and Excel formats.


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Why I switched from Java to Kotlin

mar, 06/02/2020 - 09:01

After years as an educator, I became a professional software developer. That brought me to Java, but recently, I began enjoying a totally different but compatible programming language called Kotlin.


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How to scale an open, energetic community

mar, 06/02/2020 - 09:00

Open communities live and breathe. They grow, shift, and change when people join or leave them, learn something new, contribute something different. New contributors step up; long-time contributors take breaks. And the community's dynamics reform every time they do.

Just look at the Open Organization community. For the past five years, we've been helping the world better understand the ways open principles are changing the ways we work, manage, and lead. And we've never stopped evolving.


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When to choose C or Python for a command-line interface

lun, 06/01/2020 - 09:02

This article has a simple goal: to help new Python developers with some of the history and terminology around command-line interfaces (CLIs) and explore how to write these useful programs in Python.

In the beginning…

First, a Unix perspective on command-line interface design.


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How to write a VS Code extension

lun, 06/01/2020 - 09:01

Visual Studio Code (VS Code) is a cross-platform code editor created by Microsoft for Linux, Windows, and macOS. Unfortunately, Microsoft's version of VS Code is released under the Microsoft Software License, which is not an open source license. However, the source code is open source, released under the MIT license, with releases distributed by the VSCodium project.


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10 tips for maintaining a DevOps mindset for distributed teams

lun, 06/01/2020 - 09:00

I am one of the agents of chaos who passionately argued the importance of removing barriers and recognizing that people are the core of a healthy DevOps mindset. Fast-forward to the COVID-19 pandemic, in which collocated teams were forced to disperse overnight into self-isolating distributed entities, relying on technology to bring us all back together in a virtual world.


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