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IBM/Red Hat/Fedora: Flatpak, Fedora Women’s Day and More

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Red Hat
  • Avoiding common mistakes in modernizing legacy applications

    Recently, I worked with a customer in the courier industry whose core logistics scheduling application suffered from reliability, performance, and scalability issues. While I addressed the immediate problems, it was clear that the 20 years of patchwork fixes, enhancements, and technical debt accumulated were the root cause.
    The legacy architecture consisted of four Red Hat JBoss Enterprise Application Platform servers, each with an instance of the logistics scheduling application deployed and an embedded Artemis broker to handle the messaging. When deploying a new version of the application, each node was brought offline.

    However, each deployment resulted in message loss due to the Artemis broker clustering being non-existent. Each message loss meant a loss in revenue. In addition to the lack of clustering for messaging, the JBoss EAP servers were not load balanced nor clustered, therefore each instance was a single point of failure.

  • Will Thompson: Chromium on Flathub

    Endless OS is based on Debian, but rather than releasing as a bunch of .debs, it is released as an immutable OSTree snapshot, with apps added and removed using Flatpak.

    For many years, we maintained a branch of Chromium as a traditional OS package which was built into the OS itself, and updated it together with our monthly OS releases. This did not match up well with Chromium, which has a new major version every 6 weeks and typically 2–4 patch versions in between. It’s a security-critical component, and those patch versions invariably fix some rather serious vulnerability. In some ways, web browsers are the best possible example of apps that should be updated independently of the OS. (In a nice parallel, it seems that the Chrome OS folks are also working on separating OS updates from browser updates on Chrome OS.)

    Browsers are also the best possible example of apps which should use elaborate sandboxing techniques to limit the impact of security vulnerabilities, and Chromium is indeed a pioneer in this space. Flatpak applies much the same tools to sandbox applications, which ironically made it harder to ship Chromium as a Flatpak: when running in the Flatpak sandbox, it can’t use those same sandboxing APIs provided by the kernel to sandbox itself further.

    Flatpak provides its own API for sandboxed applications to launch new instances of themselves with tighter sandboxing; what’s needed is a way to make Chromium use that…

  • Db2 and Oracle connectors coming to Debezium 1.4 GA

    This article gives an overview of the new Red Hat Integration Debezium connectors and features included in Debezium 1.4’s general availability (GA) release. Developers now have two more options for streaming data to Apache Kafka from their datastores and a supported integration to handle data schemas.

    The GA of the Db2 connector lets developers stream data from Db2. The Oracle connector, now in technical preview, provides an easy way to capture changes from one of the most popular databases. Finally, developers can delegate the Debezium schema through the fully supported integration with Red Hat Integration’s service registry.

  • Integrate Red Hat’s single sign-on technology 7.4 with Red Hat OpenShift

    In this article, you will learn how to integrate Red Hat’s single sign-on technology 7.4 with Red Hat OpenShift 4. For this integration, we’ll use the PostgreSQL database. PostgreSQL requires a persistent storage database provided by an external Network File System (NFS) server partition.

  • Fedora Women’s Day 2020 Reflection

    Fedora Women’s Day 2020 was a celebration of personal growth, community, and love for open source software. Over three days, women and non-binary folks from the Fedora community shared stories about their lives and work in tech. From the challenges and barriers that they encountered to the achievements and success that they earned, we had the privilege of learning about gendered experiences that informed the journey of each of our speakers.

    In previous years, Fedora Women’s Day has been hosted locally by organizers around the world. In response to the pressures of COVID-19, Fedora Women’s Day went virtual this year. At a time where we can all benefit from a little community, this move created space for Fedorans and open source users everywhere to come together to learn, network, and be inspired. For many of the attendees, this was their first Fedora Women’s Day.

    The event was hosted on following the success of Fedora Nest. We had 67 attendees and 24 speakers. Event organizer Marie Nordin did a fantastic job curating the speaker list and breaking it up with social activities. We were treated to fun events such as “Cake with FCAIC”, one on one networking sessions, group discussions, and pictionary.

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.