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IBM/Red Hat Leftovers

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Red Hat
  • Using the no-cost Developer Subscription with the new Red Hat Enterprise Linux Image Builder hosted service

    We recently published "Introducing the hosted beta experience Red Hat Enterprise Linux Image Builder," hosted service as part of the Insights application suite. As a followup to that exciting announcement, we are pleased to share that this new service can be used with the no-cost Developer Subscription for Individuals, providing the benefits of Red Hat Enterprise Linux, Insights, and simple OS image creation to everyone!

    More information about this subscription offering is on Red Hat Developer site, "No-cost Red Hat Enterprise Linux Individual Developer Subscription: FAQs."

    Access to Image Builder requires a Red Hat account and at least one subscription of Red Hat Enterprise Linux. If you do not have either of these, you can easily request them at no cost.

  • Reduce the size of container images with DockerSlim | Red Hat Developer

    Containers are a great way to package your applications. Packaging your application codebase together with its dependencies creates a container image. The smaller the container image is, the faster your application will spin up for the first time, and the faster it will scale. But many container images are quite large, in the hundreds of megabytes—just search Docker Hub and prepare to be amazed at the image sizes.

    In this article, you'll learn how to optimize Docker container images for size using a project called DockerSlim. DockerSlim, which is open sourced under the Apache 2.0 license, won't change anything in your container image, but can still reduce its size—or minify it—by up to a factor of 30. For applications written in compiled languages, the size reduction can be even more dramatic. DockerSlim also makes your packages more secure by reducing the available attack surface.

  • 5 Kubernetes trends to watch in 2022 | The Enterprisers Project

    Kubernetes is growing up – and so are the teams that have been using it since its younger years.

    Those earlier adopters are coming into their own now, able to build on their experience and the growth of the cloud-native ecosystem to extend Kubernetes core capabilities in new ways.

    “We will continue to scale and expand our use of Kubernetes to address the hybrid, multi-cloud needs of our business,” says Eric ​​Drobisewski, senior architect at Liberty Mutual. “As we look ahead, the declarative API and strong reconciliation loop that Kubernetes provides will continue to be critical to unify and bring a more consistent approach to how we define, manage, and secure our digital capabilities across public and private cloud environments.”

    The Fortune 100 company’s accelerating Kubernetes usage as a platform for its broader hybrid cloud/multi-cloud infrastructure reflects one of the macro trends fueling soaring Kubernetes adoption across industries.

  • Linux Foundation, Red Hat Join Supply Chain Security Summit

    Last week the White House convened government and private sector stakeholders to discuss initiatives to improve the security of open source software and ways new collaboration could drive improvements.

  • Restarting and Offline Updates - Fedora Magazine

    A recurring question that goes around the internet is why Fedora Linux has to restart for updates. The truth is, Linux technically doesn’t need to restart for updates. But there is more than meets the eye. In this short guide we’ll look into why Fedora Linux asks you to restart for offline updates.

More in Tux Machines

today's leftovers

  • Coffee Lake based rugged PC offers flexible display support and extensive storage capacity

    Taiwan based Cincoze, released a compact and robust PC that is powered by 9/8th Gen Intel Core CPUs (i7, i5, i3) and up to 128GB of DDR4 memory. The company claims the DV-1000 PC has a footprint of half a sheet of an A4 paper but it packs several interfaces to meet demands in industrial, robotics, in-vehicle computing and many other applications. For storage options, the DV-1000 includes one SATA tray, two mSATA slots, one M.2 Key M 2280 slot for NVMe SSD. In addition to supporting legacy displays such as two VGA ports, the rugged PC provides one DisplayPort and one HDMI port.

  • Save session at any time

    In that scenario, could only save the session at shutdown. Which I was not entirely happy with. If doing some important work that don't want to lose, having to reboot just to save the session, is not satisfactory.

  • Linux Plumbers Conference Refereed-Track Deadlines

    The proposal deadline is June 12, which is right around the corner. We have excellent submissions, for which we gratefully thank our submitters! For the rest of you, we do have one problem, namely that we do not yet have your submission. So please point your browser at the call-for-proposals page and submit your proposal. After all, if you don’t submit it, we won’t accept it!

  • Bitcoin Core

    There is a new application available for Sparkers: Bitcoin Core

  • raku & rust: a romance? – Physics::Journey

    Rust is blazingly fast and memory-efficient: with no runtime or garbage collector, it can power performance-critical services, run on embedded devices, and easily integrate with other languages. Rust continues the spirit of C with emphasis on code safety and performance with a compiled approach. Raku is an open source, gradually typed, Unicode-ready, concurrency friendly programming language made for at least the next hundred years. Raku continues the spirit of Perl with interpreter-like code generation (actually on MoarVM), one-liners, shell-centric, lightweight objects and expressiveness to get code up and running fast.

Using GNU/Linux Like It's Windows

Builder GTK 4 Porting, Part V

Small changes here and there for template-glib to cover more cases for us in our keybindings effort. Improved type comparisons, fixed some embarrassing bugs, improved both GObject Introspection and GType method resolution. Had some interesting talks with Benjamin about expression language needs within GTK and what things I’ve learned from Template-GLib that could be extracted/rewritten with a particular focus on continuously-evaluating-expressions. Read more Also: Aman Kumar: Beginning my GSoC'22 journey with GNOME

today's howtos

  • Steinar H. Gunderson - Speeding up Samba AD

    One Weird Trick(TM) for speeding up a slow Samba Active Directory domain controller is seemingly to leave and rejoin the domain. (If you don't have another domain controller, you'll need to join one in temporarily.) Seemingly, not only can you switch to LMDB (which has two fsyncs instead of eight on commit—which matters a lot, especially on non-SSDs, as the Kerberos authentication path has a blocking write to update account statistics), but you also get to regenerate the database, giving you the advantage of any new indexes since last upgrade.

  • How to Change File Extensions on Linux

    File extensions help both operating systems and users distinguish between different file formats and understand the contents stored inside them. When you see a file with the ".txt" extension, you instantly know it contains text data. Similarly, ".exe" file is a Windows executable and ".sh" files are Linux shell scripts. But what if you want to change these extensions for some reason? Perhaps you need to rename a text file to a Bash script. Simply writing the code in a text file won't do the job. On Linux, changing file extensions is much easier than you might think.

  • How to Install and Set up PostgreSQL Database on Ubuntu 22.04 LTS (Jammy Jellyfish) – LinuxWizardry

    PostgreSQL is a free and open-source relational database management system that allows both SQL and JSON querying. With over 30 years of active development, it has gained a solid reputation for its reliability, data integrity, extensibility, ACID compliance, and robust features. It allows you to create your own data types, define custom functions, and write different programming language codes without recompiling your database. It is compatible with all major operating systems including Windows, Linux/UNIX, Mac OS, IRIX, Solaris, etc. This tutorial will teach you how to install and set up PostgreSQL on the Ubuntu system.

  • How To Install PlayOnLinux on Ubuntu 22.04 LTS - idroot

    In this tutorial, we will show you how to install PlayOnLinux on Ubuntu 22.04 LTS, as well as some extra required packages by PlayOnLinux

  • Setting Up Environment Variables on Ubuntu – TecAdmin

    An environment variable contains a value, that is used to change the behaviors of the processes at run time. Similar to the other operating systems, we can also set the environment variables on a Ubuntu system.

  • How to Hide Lock Screen option from System Menu in Ubuntu 22.04 | UbuntuHandbook

    Want to hide the lock screen option from the upper-right corner system menu? Here’s how to do the trick in Ubuntu 22.04 LTS. For Ubuntu, Fedora and other Linux with GNOME desktop, the screen lock can be disabled either totally or only from the system menu.