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Red Hat and Fedora Leftovers

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Red Hat
  • The making of Creating ChRIS: Developing a distinct visual and narrative style

    Casey Stegman, writer, Eric Kramer, animator, and Kieran Moreira, director, talk about finding inspiration and setting the tone during the creative process. Casey discusses how they developed the style of the film, Kieran walks through the decision to use specific video equipment to support the overall style, and Eric considers how the graphics were integrated.

    We've included a snapshot of the conversation, but you can also listen to the full conversation with our embedded player or download the MP3.

  • OperatorHub.io Operator Round-Up

    In the few short weeks since Operator Hub launched, there have been many additions to the site’s trove of Kubernetes Operators. They offer services for your Kubernetes cluster ranging from etcd and CockroachDB, to Jaeger Tracing and Dynatrace. Like spring flowers, Operators have popped up from the open source community soil. We wanted to gather up all of our existing Operators Blog coverage and deep-dives into one post, today, in preparation for a significant uptick n the number of available Operators as spring turns into summer.

    By the end of the summer, Operatorhub.io should be filled with Operators for all manner of services and enterprise-ready systems. Of course, you’ll be able to read about all those new additions here, where we’ll highlight newcomers along with deeper technical content when available. Before that happens, (and as we all know, software delivery estimation is really hard!) we wanted to round up all of the information we’ve thus far published on Operators to help you get up to speed with what’s already there before the fresh bloom of new software.

  • ShadowReader: Serverless load tests for replaying production traffic

    While load testing has become more accessible, configuring load tests that faithfully re-create production conditions can be difficult. A good load test must use a set of URLs that are representative of production traffic and achieve request rates that mimic real users. Even performing distributed load tests requires the upkeep of a fleet of servers.

    ShadowReader aims to solve these problems. It gathers URLs and request rates straight from production logs and replays them using AWS Lambda. Being serverless, it is more cost-efficient and performant than traditional distributed load tests; in practice, it has scaled beyond 50,000 requests per minute.

    At Edmunds, we have been able to utilize these capabilities to solve problems, such as Node.js memory leaks that were happening only in production, by recreating the same conditions in our QA environment. We're also using it daily to generate load for pre-production canary deployments.

    The memory leak problem we faced in our Node.js application confounded our engineering team; as it was only occurring in our production environment; we could not reproduce it in QA until we introduced ShadowReader to replay production traffic into QA.

  • New AppStream Validation Requirements
  • Broadway adventures in Gtk4

    One of my long running side projects is a Gtk backend called “Broadway”. Instead of rendering to the screen this backend creates a HTTP server that you can connect to, and then exposes the UI remotely in the browser.

    The original version of broadway was essentially streaming image frames, although there were various ways to optimize what got sent. This matches pretty well with how Gtk 3 rendering works, particularly on Wayland. Every frame it calls out to all widgets, letting them draw on top of a buffer and then sends the final frame to the compositor. Broadway just inserts some image delta computation and JavaScript magic in the middle of this.

More on Broadway

  • HTML5 Broadway Backend Is Seeing Renewed Attention Ahead Of GTK 4.0

    The Broadway back-end has needed several adjustments to the rearchitecting that has gone on for the GTK4 tool-kit. These GTK4 changes have been to make modern GPU-based rendering more suitable in an OpenGL and Vulkan world but has made some Broadway changes more difficult and other areas easier. GTK4's Broadway back-end makes more use of the GTK native CSS, turns render nodes into actual DOM nodes, and even supporting 3D transforms via CSS.

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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.