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Red Hat: KVM, OpenShift, oVirt and More

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Red Hat
  • All you need to know about KVM userspace

    The KVM hypervisor is a central part of Red Hat products such as Red Hat Virtualization, Red Hat OpenStack Platform and the Container-Native Virtualization add-on to Red Hat OpenShift Container Platform. KVM's role is to enable and control the processor's hardware virtualization capabilities; this allows virtual machines to run at close to native speed for a wide variety of workloads.

    KVM itself is "just" a Linux device driver and only one part of our virtualization stack. Userspace components such as QEMU and libvirt, and other kernel subsystems such as SELinux, have a major part in making the stack full-featured and secure. This post will explore the userspace side of the KVM virtualization stack, what alternatives exist to QEMU and libvirt, and how our work on QEMU and libvirt may make them suitable for an ever wider range of use cases.

  • Red Hat Provides New VirtIO Windows Driver Installer

    Red Hat engineers are busy working on oVirt 4.4 as the next feature release for this virtualization management platform that forms the basis of Red Hat Enterprise Virtualization. For this next release they are planning to ship a new Windows installer for their drivers to ease the deployment.

    Using the WiX Toolset, they are providing a new installation experience around the VirtIO Windows drivers for these drivers that interface with the various virtual devices. These new drivers are now also to be shipped directly on the VirtIO Windows ISO.

  • Bring joy to development with Quarkus, the cloud-native Java framework

    Our first DevNation Live regional event was held in Bengaluru, India in July. This free technology event focused on open source innovations, with sessions presented by elite Red Hat technologists.

    Quarkus is revolutionizing the way that we develop Java applications for the cloud-native era, and in this presentation, Edson Yanaga explains why it also sparks joy.

    Watch this live coding session to get familiar with Quarkus and learn how your old and new favorite APIs will start in a matter of milliseconds and consume tiny amounts of memory. Hot reload capabilities for development will bring you instant joy.

  • 4 ways developers can have a say in what agile looks like

    Agile has become the default way of developing software; sometimes, it seems like every organization is doing (or wants to do) agile. But, instead of trying to change their culture to become agile, many companies try to impose frameworks like scrum onto developers, looking for a magic recipe to increase productivity. This has unfortunately created some bad experiences and leads developers to feel like agile is something they would rather avoid. This is a shame because, when it's done correctly, developers and their projects benefit from becoming involved in it. Here are four reasons why.

    [...]

    I'm a believer in continuous improvement, and this sentence resonates with me. It emphasizes the importance of having a growth mindset while being a part of an agile team. In fact, I think this outlook is a solution to most of the problems a team may face when adopting agile.

    Scrum is not working for your team? Right, let's discover a better way of organizing it. You are working in a distributed team across multiple timezones, and having a daily standup is not ideal? No problem, let's find a better way to communicate and share information.

    Agile is all about flexibility and being able to adapt to change, so be open-minded and creative to discover better ways of collaborating and developing software.

  • OpenShift 4.2: Expanded Tools and Services for Developers

    The addition of the new Developer Perspective aims to give developers an optimized experience in the web console with the features and workflows they’re most likely to need to be productive. Developers can focus on higher level abstractions like their application and components, and then drill down deeper to get to the OpenShift and Kubernetes resources that make up their application, if desired.

    An interactive Topology view makes it easier for developers to deploy and visualize their applications, and provides quick access to important features such as pod and build logs.

More in Tux Machines

digiKam 7.7.0 is released

After three months of active maintenance and another bug triage, the digiKam team is proud to present version 7.7.0 of its open source digital photo manager. See below the list of most important features coming with this release. Read more

Dilution and Misuse of the "Linux" Brand

Samsung, Red Hat to Work on Linux Drivers for Future Tech

The metaverse is expected to uproot system design as we know it, and Samsung is one of many hardware vendors re-imagining data center infrastructure in preparation for a parallel 3D world. Samsung is working on new memory technologies that provide faster bandwidth inside hardware for data to travel between CPUs, storage and other computing resources. The company also announced it was partnering with Red Hat to ensure these technologies have Linux compatibility. Read more

today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.