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SUSE and IBM/Red Hat Leftovers

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  • No More Sleepless Nights and Long Weekends Doing Maintenance

    Datacenter maintenance – you dread it, right? Staying up all night to make sure everything runs smoothly and nothing crashes, or possibly losing an entire weekend to maintenance if something goes wrong. Managing your datacenter can be a real drag. But it doesn’t have to be that way.

    At SUSECON 2019, Raine and Stephen discussed how SUSE can help ease your pain with SUSE Manager, a little Salt and a few best practices for datacenter management and automation.

  • Fedora Has Formed A Minimization Team To Work On Shrinking Packaged Software

    The newest initiative within the Fedora camp is a "Minimization Team" seeking to reduce the size of packaged applications, run-times, and other software available on Fedora Linux.

    The hope of the Fedora Minimization Team is that they can lead to smaller containers, eliminating package dependencies where not necessary, and reducing the patching foot-print.

  • DevNation Live: Easily secure your cloud-native microservices with Keycloak

    DevNation Live tech talks are hosted by the Red Hat technologists who create our products. These sessions include real solutions and code and sample projects to help you get started. In this talk, you’ll learn about Keycloak from Sébastien Blanc, Principal Software Engineer at Red Hat.

    This tutorial will demonstrate how Keycloak can help you secure your microservices. Regardless of whether it’s a Node.js REST Endpoint, a PHP app, or a Quarkus service, Keycloak is completely agnostic of the technology being used by your services. Learn how to obtain a JWT token and how to propagate this token between your different secured services. We will also explain how to add fine-grained authorizations to these services.

More in Tux Machines

Games: Underworld Ascendant, Dark Envoy and Elite Dangerous

  • Underworld Ascendant's Linux port has now been released

    Get ready to dungeon crawl! After many delays, the sequel to the classic Ultima Underworld games has finally seen a Linux release.

  • Event Horizon (Tower of Time) show off the first gameplay from their next RPG Dark Envoy

    Ah Gamescom has arrived, which means tons of games will be shown off over the next week. Event Horizon (Tower of Time dev) are getting in on the action, to show off footage from their brand new RPG called Dark Envoy. For those who missed the previous article, it is already confirmed to be coming to Linux. To save you a click, when asked they said "We spent a considerable effort to make Tower of Time run well on Linux - so now, being more experienced with it, we also plan to release on Linux at the same time as PC launch.".

  • Going where no Steam Play has gone before with Elite Dangerous

    What’s the one game keeping you a dual booter? Maybe it’s PUBG, or Rainbow Six: Siege? Maybe it used to be Overwatch? For me, that game was Elite Dangerous, and one year on from Proton’s release, I have a story to tell. There’s a certain “je ne sais quoi” about Elite Dangerous that I’ve never been able to put my finger on. It’s a game set in a scientifically modelled, full-scale replica of the whole Milky Way galaxy, and as with that setting, the game is truly vast, remarkably cold, and frequently incomprehensible. Yet, when playing Elite, I get the same feeling as when looking up at the stars on a dark and moonless night — my hungry soul is fed. Or it could just be space madness. Regardless, it’s a feeling that I like to dip into every once in a while, immerse myself in, and try not to drown.

Red Hat and Fedora: HPC, Ansible and More Flock Reports

  • HPC workloads in containers: Comparison of container run-times

    Recently, I worked on an interesting project to evaluate different container run-times for high-performance computing (HPC) clusters. HPC clusters are what we once knew as supercomputers. Today, instead of giant mainframes, they are hundreds, thousands, or tens of thousands of massively parallel systems. Since performance is critical, virtualization with tools like virtual machines or Docker containers was not realistic. The overhead was too much compared to bare metal.

  • A project manager's guide to Ansible

    For project managers, it's important to know that deploying Ansible will improve the effectiveness of a company's IT. Employees will spend less time trying to troubleshoot their own configuration, deployment, and provisioning. Ansible is designed to be a straightforward, reliable way to automate a network's IT tasks. Further, development teams can use the Ansible Tower to track applications from development to production. Ansible Tower includes everything from role-based access to graphical inventory management and enables teams to remain on the same page even with complex tasks. Ansible has a number of fantastic use cases and provides substantial productivity gains for both internal teams and the IT infrastructure as a whole. It's free, easy to use, and robust. By automating IT with Ansible, project managers will find that their teams can work more effectively without the burden of having to manage their own IT—and that IT works more smoothly overall.

  • Flock to Fedora ?19

    I had a wonderful opportunity to go to Fedora’s annual contributor summit, Flock to Fedora in Budapest, Hungary. This is me penning down my takeaway from a week full of learning! [...] Apart from the talks, the conference outshone when it came to meeting mind-blowing developers. I got to know the most about Fedora and Red Hat through those interactions and it was a really pleasant experience. It was also super amazing to finally meet all the people I had been interacting with over the course of the internship in real life. My advice for any future Flock attendee would be to always make time to talk to people at Flock. Even I have a hard time interacting but the people are extremely nice and you get to learn a lot through those small interactions and end up making friends for a life time. Definitely taking back a tonne of memories, loads of pictures, and plethora of learning from this one week of experience.

  • Paul W. Frields: Flock 2019 in Budapest, Hungary.

    Last week I attended the Flock 2019 conference in Budapest, like many Fedora community members. There was a good mix of paid and volunteer community members at the event. That was nice to see, because I often worry about the overall aging of the community. Many people I know in Fedora have been with the project a long time. Over time, people’s lives change. Their jobs, family, or other circumstances move them in different directions. Sometimes this means they have less time for volunteer work, and they might not be active in a community like Fedora. So being able to refresh my view of who’s around and interested in an event like Flock was helpful. Also, at last year’s Flock in Dresden, after the first night of the conference, something I ate got the better of me — or I might have picked up a norovirus. I was out of commission for most of the remaining time, confined to my room to ride out whatever was ailing my gut. (It wasn’t pretty.) So I was glad this year also to be perfectly well, and able to attend the whole event. That was despite trying this terrible, terrible libation called ArchieMite, provided by my buddy Dennis Gilmore... [...] I also attended several sessions on Modularity. One of them was Merlin Mathesius’ presentation on tools for building modules. Merlin is on my team at Red Hat and I happened to know he hadn’t done a lot of public speaking. But you wouldn’t have guessed from his talk! It was well organized and logically presented. He gave a nice overview of how maintainers can use the available tools to build modules for community use. The Modularity group also held a discussion to hear about friction points with modularity. Much of the feedback lined up well with other inputs the group has received. We could solve some with better documentation and awareness. In some cases the tools could benefit from ease of use enhancements. In others, people were unaware of the difficult design decisions or choices that had to be made to produce a workable system. Fortunately there are some fixes on the way for tooling like the replacement for the so-called “Ursa Major” in Fedora. It allows normal packages to build against capabilities provided by modules.

Programming Leftovers

  • Excellent Free Books to Learn Groovy

    Apache Groovy is a powerful, optionally typed and dynamic language, with static-typing and static compilation capabilities, for the Java platform aimed at improving developer productivity thanks to a concise, familiar and easy to learn syntax. It integrates seamlessly with any Java program, and immediately delivers to your application powerful features, including scripting capabilities, Domain-Specific Language authoring, runtime and compile-time meta-programming and functional programming. It’s both a static and dynamic language with features similar to those of Python, Ruby, Perl, and Smalltalk. It can be used as both a programming language and a scripting language for the Java Platform.

  • Top 9 Django Concepts - Part 2 : 5 Mins

    I will be covering 3 Django concepts, for those who had missed the first part of the 3 part series, you can head down to the Top 9 Django Concepts - Part 1 The first concept is essential Django commands that you will be using when developing in Django. The second is the concept of using either a front-end like Vue, React or Angular web framework or using Django existing template system to build UI.

  • Get Current Date & Time in Python

    In this article, you will learn the datetime module supplies classes for manipulating dates and times in both simple and complex ways.

  • RcppQuantuccia 0.0.3

    RcppQuantuccia brings the Quantuccia header-only subset / variant of QuantLib to R. At the current stage, it mostly offers date and calendaring functions. This release was triggered by some work CRAN is doing on updating C++ standards for code in the repository. Notably, under C++11 some constructs such ptr_fun, bind1st, bind2nd, … are now deprecated, and CRAN prefers the code base to not issue such warnings (as e.g. now seen under clang++-9). So we updated the corresponding code in a good dozen or so places to the (more current and compliant) code from QuantLib itself.

7 of the Best IoT Projects Using Arduino

If you’re an electronics hobbyist, chances are you’ve heard of the Arduino. It’s a tiny computer that you can use to do surprisingly complex things. It also happens to be behind a fair number of Internet of Things projects. While some people reach a for Raspberry Pi or something even more powerful, an Arduino or Arduino Uno might be all you need. We’ve put together a list of IoT projects that prove this to be true. Read more Also: mDash Cloud platform for IoT Devices Targets ESP8266/ESP32, STM32, and TI CC3220 Wireless MCUs