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Red Hat and SUSE: Drools, Systemd, Libinput, Fedora and Beta for SUSE Manager 4.0

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  • Quarking Drools: How we turned a 13-year-old Java project into a first-class serverless component

    Rule-based artificial intelligence (AI) is often overlooked, possibly because people think it’s only useful in heavyweight enterprise software products. However, that’s not necessarily true. Simply put, a rule engine is just a piece of software that allows you to separate domain and business-specific constraint from the main application flow. We are part of the team developing and maintaining Drools—the world’s most popular open source rule engine and part of Red Hat—and, in this article, we will describe how we are changing Drools to make it part of the cloud and serverless revolution.

  • Why feedback, not metrics, is critical to DevOps

    Most managers and agile coaches depend on metrics over feedback from their teams, users, and even customers. In fact, quite a few use feedback and metrics synonymously, where they present feedback from teams or customers as a bunch of numbers or a graphical representation of those numbers. This is not only unfortunate, but it can be misleading as it presents only part of the story and not the entire truth.

  • L2TP Tunnel Support Added To Systemd

    The newest feature addition for systemd is supporting L2TP, the Layer 2 Tunneling Protocol, as part of its networking code. 

    Systemd's networkd now has support merged for LT2TP tunnel support. L2TP can be used for extending a local area network (LAN) or also for VPN purposes when paired with the likes of IPsec for providing encryption. L2TP also has a variety of other use-cases with this bare protocol able to offer a layer two link over an L3 network.

  • libinput 1.12.901
    The first RC for libinput 1.13 is now available.
    
    
    
    
    Only two notable features in this release but patches are accumulating on
    master, it's been 6 months since 1.12 and I've decided to postpone the two
    major features (hi-res scrolling and totem support) to 1.14.
    
    
    
    
    Touch arbitration has improved for tablets, especially on touch screens.
    A timer set on pen proximity out means we don't get ghost touches anymore
    when the hand lifts off slower than the pen itself. And location-based touch
    arbitration means that parts of the screen can be interacted with even while
    the pen is in proximity. libinput uses the tilt information where
    available to disable touches in a rectangle around the pen where the hand is
    likely to be but leaves the rest of the touchscreen available otherwise.
    Where the UI supports it, this allows for bimanual interaction.
    
    
    
    
    The test suite is installed on demand (meson -Dinstall-tests=true). Where
    run from the installed location it will use the normal library lookups and
    the quirks directory as defined by the prefix. This makes it useful for
    distribution-level testing, i.e. run this on a test machine after updating
    the package to make sure everything is as expected. Where available, you can
    invoke it with the "libinput test-suite" command.
    
    
    
    
    Other than that, a load of fixes, quirks added, cleanups, tidy-ups and so on
    an so forth.
    
    
    
    
    As usual, the git shortlog is below. Many thanks to all the contributors.
  • Libinput 1.13 Is Coming But High-Resolution Scrolling & Dell Totem Support Delayed

    Libinput is fairly mature at this stage for offering a unified input handling library for use on both X.Org and Wayland Linux desktops. Libinput has largely reached a feature plateau with new releases no longer coming out so often and no glaring gaps in support. With it already being a half-year since the last major release, libinput 1.13 is now being buttoned up for release and available today is the first release candidate. 

    Libinput 1.13 isn't that exciting of a release particularly since maintainer Peter Hutterer of Red Hat decided to delay the high resolution scrolling support. The Linux 5.0 kernel brought the much anticipated high resolution scrolling support for various Logitech/Microsoft mice to improve the scroll-wheel experience. Besides the kernel support, there is also the user-space support that needs updating. Peter decided to delay this functionality now until Libinput 1.14 to give it more time to bake.

  • New package in Fedora: python-xslxwriter
  • First Public Beta for SUSE Manager 4.0!

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today's leftovers

  • Btrfs Gets Cleaned Up & Code Refactoring For Linux 5.3

    David Sterba sent in the Btrfs file-system updates on Monday for the Linux 5.3 kernel. Btrfs for Linux 5.3 doesn't present any shiny new features but is mostly focused on bug fixes and low-level code improvements. One of the internal changes worth pointing out for Btrfs is changing its CRC32C usage so that it can be hardware-assisted on more architectures where native instructions or optimized code paths are available. More Btrfs code has also been positioned for more checksum algorithms moving forward.

  • g_array_binary_search in GLib 2.61.2

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  • Rabimba: ARCore and Arkit: What is under the hood : Anchors and World Mapping (Part 1)

    Some of you know I have been recently experimenting a bit more with WebXR than a WebVR and when we talk about mobile Mixed Reality, ARkit and ARCore is something which plays a pivotal role to map and understand the environment inside our applications. I am planning to write a series of blog posts on how you can start developing WebXR applications now and play with them starting with the basics and then going on to using different features of it. But before that, I planned to pen down this series of how actually the "world mapping" works in arcore and arkit. So that we have a better understanding of the Mixed Reality capabilities of the devices we will be working with.

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    As an online business owner and/or site administrator it is important that you are always ahead of probable data damage by having a data contingency plan. On WordPress, this process has been simplified for all levels of users in the form of backup plugins that can enable you to automate full or partial backups which you can easily restore from later on. Today, we bring you a list of the 10 best plugins for backing up your WordPress site. They all feature a clean modern UI, in active development with millions of downloads, and most of them are 100% free!

today's howtos and software bits