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Red Hat Leftovers

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Red Hat
  • Implementing Apache ActiveMQ-style broker meshes with Apache Artemis

    Apache ActiveMQ and Apache Artemis (or ActiveMQ Artemis) are open source message brokers with similar functionality. Both implementations are venerable, with histories that go back to the early 2000s. However, Artemis is in some senses a more modern implementation because, ironically, it has a smaller feature set. This makes Artemis easier to maintain, which is important if you're basing a commercial product on it. The smaller feature set means a smaller overall implementation, which fits well with developing microservices.

    Early versions of Red Hat AMQ were based on ActiveMQ, but attention has shifted to Artemis in AMQ 7. ActiveMQ is not maintained as vigorously as it once was by the open source community, but at the time of writing, Amazon is still offering a message broker service based on ActiveMQ. Whether it has a long-term future, at Amazon or elsewhere, remains to be seen.

    Leaving aside ActiveMQ's complex niche features (such as message routing based on Apache Camel rules), ActiveMQ and Artemis look similar to the integrator and, in most practical applications, provide comparable throughput. However, they differ in important areas. Message distribution in the presence of multiple active brokers causes particular problems for integrators who want to move from ActiveMQ to Artemis.

  • 17 Linux commands every sysadmin should know

    A few months ago, I asked the Enable Sysadmin contributor community to help me make a list of their most essential commands. After processing the results, 17 of the commands emerged as being essential or at least hugely beneficial to the Linux sysadmin job. So without any further delay, let's jump into these.

  • Making Java programs cloud-ready, Part 3: Integrate MicroProfile services

    The first article in this series presented a legacy Java application that we want to upgrade to a microservices architecture. In the second article, we upgraded the Java EE environment to Jakarta EE. Now, we will add a powerful collection of microservices functionality, writing very little code of our own.

  • Artificial Intelligence (AI): 4 novel ways to build talent in-house

    The analytics leader of a US-based Fortune 200 company was under severe pressure. Her team supported 45,000 employees of the global energy company, and the business users weren’t happy. The analytics deliverables were often late and suffered from poor quality.

    The analytics team was a part of the IT organization and was struggling to fill their open positions. The skills needed couldn’t be found within the IT team. Their office was a 60-mile drive up north from a large metropolitan area in the US, and it wasn’t easy to attract talent.

    Training the few people they managed to hire wasn’t easy, and they often fell short in their business understanding. As a result, the analytics team was notorious for being understaffed, overworked, and facing the wrath of business users.

    Does this scenario sound familiar?

  • Hybrid work: 3 truths leaders can't ignore

    After more than a year of working through the COVID-19 pandemic, some of us are finally starting to regain a sense of normalcy – one in which many companies have adopted a hybrid work model. While this approach offers flexibility and other advantages, it can also introduce challenges for both workers and organizations.

    For organizations, concerns include the financial aspect of keeping a physical office space, managing employees’ schedules, keeping tabs on a distributed workforce, and making sure everyone has the technology and tools they need.

    Many people have strong opinions on hybrid work – views that generally align with their personal preferences.
    For some employees, lack of in-office contact can make them feel removed from the team. Others may feel pressure to show face when they’re more productive from their kitchen table.

    Finding the right balance is an ongoing task, but many people have strong opinions on hybrid work – views that generally align with their personal preferences. This gives business leaders an extra challenge when it comes to setting the standards and expectations for employees.

  • Red Hat OpenShift 4.8 Helps Drive Developer Productivity For Modern Cloud-Native Applications Across The Hybrid Cloud

    Red Hat has announced Red Hat OpenShift 4.8 to help organizations accelerate the creation of new cloud-native applications without abandoning existing environments and IT investments.

    Red Hat OpenShift 4.8, based on Kubernetes 1.21 and CRI-O 1.21 runtime interface, further simplifies the developer experience while helping expand the use cases and workload possibilities across industries.

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.