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Red Hat/Fedora Leftovers

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  • Deploy a Java application using Helm, Part 2 | Red Hat Developer

    In the previous article in this series, you learned how to deploy Java applications to Red Hat JBoss Enterprise Application Platform (JBoss EAP) using Helm on Red Hat OpenShift. Developers can use the procedures in Part 1 to easily stand up traditional Java application servers on Kubernetes with predefined Kubernetes manifestos.

    What if you could have the same benefits when you develop microservices using JBoss EAP and Helm charts? JBoss EAP provides the Extension Pack (XP) to implement content trimming, packaging to a bootable JAR, and a MicroProfile specification including fault tolerance, monitoring, and tracing in support of microservices in the cloud. This article explains how to make a bootable JAR using JBoss EAP XP and Helm and deploy the application to OpenShift.

  • Red Hat build of Quarkus 2.2: Simplified Kubernetes-native Java

    Red Hat has released the Red Hat build of Quarkus 2.2 to continue to support enterprise developers building Kubernetes-native Java applications. The latest release has many great features and performance improvements, including tools to improve developer productivity while in Dev Mode.

    Let's take a look at some highlights from this release. For a complete list, check out the release notes.

  • What's new in the Red Hat OpenShift 4.9 console

    Red Hat OpenShift console users will discover a rich set of new and improved console features in OpenShift 4.9. This article introduces general improvements, usability enhancements, and new console features for developers using Red Hat OpenShift Serverless, Red Hat OpenShift Pipelines, and Red Hat OpenShift GitOps.

  • DevOps: 3 skills needed to support its future in the enterprise

    It’s no longer a question of if organizations need DevOps, but rather when they should adopt it, according to the DevOps Institute Upskilling 2021 report. That report finds that global enterprise adoption of DevOps at the project or multiple-project level is at 20 percent and 36 percent, respectively – and the skills needed for a successful DevOps journey span the categories of automation, human, technical, functional, and process knowledge.

    Whether you’re facing a skills gap in any of those key areas or you’re looking to expand your adoption of DevOps in the near future, keep the following considerations in mind:

  • Productivity lessons learned: 6 CIOs share tips for you and your team

    In our new hybrid work reality, many people in IT have enjoyed the flexibility to rewrite the rules on work-life balance. But it’s been a learning curve, says Kumud Kalia, CIO, Guardant Health.

    “As we moved to remote working for most of our employees, it became evident that time management had become much more of a juggling act between work, childcare/schooling, and miscellaneous personal priorities without a clear separation between these various activities. We already had flexible working hours for many of our employees, but we found that Zoom fatigue was real and added to the already unrelenting demands upon our people,” says Kalia.

    We asked CIOs who recently won the 2021 Bay Area CIO of the Year ORBIE Awards for their best productivity tips and lessons learned on work-life balance over the last year and a half. The awards were presented by the Bay Area CIO Leadership Association, a professional community that annually recognizes CIOs for their excellence in technology leadership.

    From being intentional and selective, to setting the right examples from the top, learn how these award-winning CIOs are making the most of their workday - and encouraging their teams to do the same.

  • Docker and Fedora 35

    In June of 2020, we published an article related to running Docker and Fedora 32. We described various workarounds that were required to run Docker, and we explained the bothersome situation at that time. But Docker has evolved, and it’s time to return to our previous tutorial. Thus, today we’ll talk about using Docker on Fedora Linux 35.

    With this guide, you should be able to easily recreate an existing development environment, without having to retool your entire pipeline. We’ll focus on getting the right packages, testing a few important scenarios, and helping you with tooling.

More in Tux Machines

Audiocasts/Shows: Late Night Linux, Destination Linux, and More

Kernel: Slowdown, CephFS, and FS-Cache / CacheFiles

  • How a performance boost in Linux kernel for one family of Intel chips slowed its latest Alder Lake processors

    The mixture of performance and efficiency CPUs in Intel’s 12th-gen Core processors, code-named Alder Lake, hasn’t just been causing problems for some Windows gamers – it almost led to complications for Linux. Phoronix’s Michael Larabel noticed a performance hit in the kernel a fortnight ago – in a work-in-progress release candidate, we should stress – and a fix for the scheduling code landed a little later. It turned out the kernel suffered on Alder Lake chips due to a performance-enhancing tweak for another Intel processor family: the multiple-Atom-core-based Jacobsville. This year, Intel officially canned its Lakefield chips. These consisted of a performance core called Sunny Cove as well as Atom-class efficiency cores dubbed Tremont. Crucially, there are still multi-Tremont-core embedded processors out there, such as Snow Ridge. These are server and infrastructure-oriented components with up to 24 cores. The first proposed cut of kernel 5.16, specifically 5.16-rc1, contained a revision to the scheduler that makes it aware that some clusters of cores share a block of L2 cache – as seen in Snow Ridge and Jacobsville.

  • Testing the Linux Kernel CephFS Client with xfstests

    I do a lot of testing with the kernel cephfs client these days, and have had a number of people ask about how I test it. For now, I’ll gloss over the cluster setup since there are other tutorials for that.

  • Major Rewrite Of Linux's FS-Cache / CacheFiles So It's Smaller & Simpler - Phoronix

    As part of David Howells of Red Hat long-term work on improving the caching code used by network file-systems, he today posted a big patch series rewriting the fscache and cachefiles code as the latest significant step on that adventure. Howells posted a set of 64 patches for rewriting the kernel's fscache and cachefiles code. Linux's fsache is a general purpose cache used by network file-systems while cachefiles is for providing a caching back-end for mounted local file-systems. The Red Hat engineer has been working on this rewrite for more than the past year.

Ubuntu Weekly Newsletter and Ubuntu Desktop on Google Clown

  • Ubuntu Weekly Newsletter Issue 711

    Welcome to the Ubuntu Weekly Newsletter, Issue 711 for the week of November 21 – 27, 2021. The full version of this issue is available here.

  • Launch Ubuntu Desktop on Google Cloud

    This tutorial shows you how to set up a Ubuntu Desktop on Google Cloud. If you need a graphic interface to your virtual desktop on the cloud, this tutorial will teach you how to set up a desktop environment just like what you can get on your own computer.

Open Hardware/Modding: ESP32, 3-D Printing, Raspberry Pi Pico, PocketBeagle

  • Wireless thermal printer kit features M5Stack ATOM Lite controller - CNX Software

    This is certainly not the first ESP32 thermal printer solution, as there are various implementations including bitbank2 thermal printer Arduino connecting ESP32 and nRF52 boards to the printer over Bluetotoh LE, or a Arduino sketches to print bitmaps over serial or MQTT.

  • Generate Fully Parametric, 3D-Printable Speaker Enclosures | Hackaday

    Having the right speaker enclosure can make a big difference to sound quality, so it’s no surprise that customizable ones are a common project for those who treat sound seriously. In that vein, [zx82net]’s Universal Speaker Box aims to give one everything they need to craft the perfect enclosure.

  • Z80 Video Output Via The Raspberry Pi Pico | Hackaday

    Building basic computers from the ground up is a popular pastime in the hacker community. [Kevin] is one such enthusiast, and decided to whip up a video interface for his retro Z80 machine.

  • The Calculator Charm: Calculatorium Leviosa! | Hackaday

    Have you ever tried waving your hand around like a magic wand and summoning a calculator? We would guess not since you’d probably look a little silly doing so. That is unless you had [Andrei’s] cool gesture-controlled calculator. [Andrei] thought it would be helpful to use a calculator in his research lab without having to take his gloves off and the results are pretty cool. His hardware consists of a PocketBeagle, an OLED, and an MPU6050 inertial measurement unit for capturing his hand motions using an accelerometer and gyroscope. The hardware is pretty straightforward, so the beauty of this project lies in its machine learning implementation.