Red Hat and IBM Leftovers

• MicroProfile 3.2 is now available on Open Liberty in Red Hat Runtimes

  Open Liberty 19.0.0.12 provides support for MicroProfile 3.2, allowing users to provide their own health check procedures and monitor microservice applications easily with metrics. Additionally, updates allow trust to be established using the JDK’s default truststore or a certificate through an environment variable. [...] Open Liberty has added support for Jaeger in MicroProfile OpenTracing. A sample tracer is available for using Zipkin as a tracing backend. With the addition of Jaeger support, developers can also use Jaeger as a tracing backend.

• Working with Linux containers on RHEL 8 with Podman, image builder and web console

  Podman was released with Red Hat Enterprise Linux 7.6 and 8.0 as the next generation of Linux container tools, is designed to allow faster experimentation and development of features. Podman features include rootless, kube generate, and kube play (see: "Podman can now ease the transition to Kubernetes and CRI-O"). Podman is also compatible with the Open Containers Initiative (OCI), Runtime, Image, and Distribution specifications, so customers can build container images that run on OpenShift (which uses CRI-O) or other 3rd-party OCI compliant container engines, and vice versa. As can be seen in Figure 1, CRI-O, in Red Hat OpenShift, shares many of its underlying components with Podman. This allows Red Hat engineers to leverage knowledge gained in experiments conducted in Podman for new capabilities in OpenShift.

• Red Hat Software Collections 3.4, Red Hat Developer Toolset 9 now generally available

  Building the next generation of enterprise applications requires the latest and greatest developer tools paired with production-grade stability. To help meet these twin needs, we’re pleased to deliver the latest version of Red Hat’s curated collection of the latest open source runtime languages, databases, compilers and related developer tools: Red Hat Software Collections 3.4.

• Celebrating 20 years of enterprise Java: Innovation

  Twenty years ago this week, enterprise Java was born. The Java 2 Platform, Enterprise Edition (J2EE) launched as version 1.2 on Dec. 12, 1999. It built upon many years of work previously in the enterprise distributed systems arena, such as the common object request broker architecture (CORBA) and distributed computing environment (DCE), and its birth marked the beginning of a technology that would become a powerhouse in the world of enterprise application development. Building on the "write once, run anywhere" promise of the Java programming language, the enterprise Java platform extends this neutrality and portability with a set of specifications that are well-suited for building large scale applications. As a result, enterprise Java has been able to offer an appealing option for developers that enables them to take advantage of the reliability, speed, efficiency and ease-of-use needed for enterprise-grade development.

• Keycloak: Core concepts of open source identity and access management

  Keycloak provides the flexibility to export and import configurations easily, using a single view to manage everything. Together, these technologies let you integrate front-end, mobile, and monolithic applications into a microservice architecture. In this article, we discuss the core concepts and features of Keycloak and its application integration mechanisms. You will find links to implementation details near the end.

• What 5 new innovations will open source yield in the 2020s?

  When I look back to where technology was in 2010, it’s astounding to think about how much has changed — and how so many of those advancements were fueled by open source. Ten years ago, AI was not a part of our everyday lives, most developers hadn’t even heard of containers or microservices, blockchain was little more than an idea, and serverless was a far-off dream. Now these technologies, built on open source projects and the communities that surround them, are shaping how developers do their jobs and how people interact with technology on a daily basis. In this blog post, I talk about some of the trends that have shaped the past decade as we look forward to what 2020 — and the next decade — has in store for us.

• Open and Innovative: others don’t have a patch on SUSE

  It’s not just general purpose and large x86_64 systems that feel the benefit of fixing vulnerable systems without waiting for a planned maintenance window. We see so many customers in the SUSE world that run critical applications or large database instances on IBM POWER. In many cases these systems do not have the same levels of flexibility built into general purpose systems, and so every minute of downtime hurts. SUSE Linux Enterprise Live Patching has supported live patching on the POWER systems for almost 2 years now. This is just another example of SUSE always listening to the user community and delivering to them what the users really need and when they need. Customers know and depend on SUSE to be the first to deliver the right technology at the right time.

Audiocasts/Shows: Talk Python to Me, Art With Free Software and mintCast on Linux Mint

• Talk Python to Me: Episode #242: Your education will be live-streamed

  Online education has certainly gone mainstream. Developers and companies have finally gotten comfortable taking online courses. Sometimes these are recorded, self-paced courses like we have at Talk Python Training. Other times, they are more like live events in webcast format. In this episode, you'll meet two guys who are taking the interactivity of online learning up a notch. Brian Clark and Cecil Philip run a weekly event on Twitch where they are live-streaming an interactive Python course. They take questions from 100's of students and dig into the diversions more mainstream online learning simply cannot.

• [Krita artist] Production report: episode 31

  Slowly but surely and in the background of the book-publishing project I've been working on a future episode of Pepper&Carrot. Here is a report about that with many screenshots:

• mintCast 323.5 – Traveling Networker Problem

  In our Innards section, we talk more about Linux Mint and Clem’s comments.

today's howtos

• How To Set up OpenVPN Server In 5 Minutes on Ubuntu Linux

• How to set rsync speed limit from eating all bandwidth

• Simple IPtables Rules For Linux Administrator

• Enable ‘2×2’, ‘3×3’ Workspace Grid in Ubuntu 18.04/19.10

• How to add bash auto completion in CentOS 8 Linux

• How to Set A Custom Screen Resolution in Ubuntu Desktop

• How to play Halo: The Master Chief Collection on Linux