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Red Hat

low-memory-monitor: new project announcement

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Linux
Red Hat

I'll soon be flying to Greece for GUADEC but wanted to mention one of the things I worked on the past couple of weeks: the low-memory-monitor project is off the ground, though not production-ready.

low-memory-monitor, as its name implies, monitors the amount of free physical memory on the system and will shoot off signals to interested user-space applications, usually session managers, or sandboxing helpers, when that memory runs low, making it possible for applications to shrink their memory footprints before it's too late either to recover a usable system, or avoid taking a performance hit.

It's similar to Android's lowmemorykiller daemon, Facebook's oomd, Endless' psi-monitor, amongst others

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Also: New Low-Memory-Monitor Project Can Help With Linux's RAM/Responsiveness Problem

IBM: Kubernetes/OpenShift, OpenPOWER, and Red Hat Enterprise Linux for Developers

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Red Hat
  • Red Hat Integration delivers new Kubernetes Operators and expands data integration capabilities with latest release

    We are pleased to announce the Q3 release of Red Hat Integration, which brings us further in our alignment around Red Hat OpenShift as the platform of choice for developing and deploying cloud-native applications across hybrid cloud environments, as well as helping customers get their integrations up and running easier and faster.

    As modern IT continues its rapid evolution, it becomes important that the cloud-native solutions supporting this transformation keep pace, enabling IT organizations to truly benefit from this constant innovation. To help customers take full advantage of this, we've updated, tested and certified every single component in Red Hat Integration with the latest version of OpenShift: Red Hat OpenShift 4.

  • The Linux Foundation Announces New Open Hardware Technologies and Collaboration

    The Linux Foundation, the nonprofit organization enabling mass innovation through open source, today announced that the OpenPOWER Foundation will become a project hosted at The Linux Foundation. The project includes IBM’s open POWER Instruction Set Architecture (ISA) and contributed Source Design Implementations required to support data-driven hardware for intensive workloads like Artificial Intelligence (AI).

    OpenPOWER is the open steward for the Power Architecture and has the support of 350 members, including IBM, Google, Inspur Power Systems, Yadro, Hitachi, Wistron, Mellanox, NVIDIA, and Red Hat.

    The governance model within the Linux Foundation gives software developers assurance of compatibility while developing AI and hybrid cloud native applications that take advantage of POWER’s rich feature set and open compute hardware and software ecosystems.

    As the demand rises for more and more compute-intensive workloads like AI and in-memory analytics, commodity systems vendors have struggled with the looming predictions of the end of Moore’s Law. Central processing units (CPUs) may no longer handle the rising demands alone, and data-centric systems are built to maximize the flow of data between CPUs and attached devices for specialized workloads. By hosting OpenPOWER at The Linux Foundation, a cross-project, cross-community collaboration, it will accelerate development of hardware and software to support data-centric systems, by making it available to a growing global audience.

    “The OpenPOWER community has been doing critical work to support the increasing demands of enterprises that are using big data for AI and machine learning workloads. The move to bring these efforts together with the worldwide ecosystem of open source developers across projects at The Linux Foundation will unleash a new level of innovation by giving developers everywhere more access to the tools and technologies that will define the next generation of POWER architecture,” said Jim Zemlin, executive director at The Linux Foundation.

  • Raptor Computing Systems Planning To Launch New ATX POWER9 Board With OpenCAPI

    In addition to the news out of the OpenPOWER Summit in San Diego that the POWER ISA is going open-source and the OpenPOWER Foundation becoming part of the Linux Foundation, Raptor Computing Systems shared they plan to launch a new standard ATX motherboard next year that will feature OpenCAPI connectivity.

    Built off the successes of their Talos II high-end server motherboard and lower-cost Blackbird desktop motherboard designs, there is apparently a new motherboard design for POWER9 being worked on that could launch in early 2020.

  • Why you should be developing on Red Hat Enterprise Linux

    With a $0 Red Hat Developer membership, you get access to Red Hat Enterprise Linux (RHEL) at no cost. We have downloads available for RHEL versions starting as far back as 7.2, and as current as RHEL 8.1 Beta. The subscription costs nothing, and there are no additional costs for any of the software or content we make available through the program.

Eclipse is Now a Module on Fedora 30

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Red Hat

From Fedora 30 onwards, Eclipse will be available as a module for Fedora Modularity.

This shows that Eclipse 2019-06 is available to install with three different profiles from which to choose. Each profile will install the Eclipse IDE and a curated set of plug-ins for accomplishing specific tasks.

java -- This is the default profile and will install everything you need to start developing Java applications.
c -- This profile will install everything you need to start developing C/C++ applications.
everything -- This profile will install all the Eclipse plug-ins currently available in the module, including those that are a part of the above two profiles.

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Red Hat Satellite 6.6 Beta is now available with enhancements across reporting, automation, and supportability

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Red Hat

We are pleased to announce that Red Hat Satellite 6.6 is now available in beta to current Satellite customers.

Red Hat Satellite is a scalable platform to manage patching, provisioning, and subscription management of your Red Hat infrastructure, regardless of where it is running. The Satellite 6.6 beta is focused on enhancements across reporting, automation, and supportability

While Satellite 6.6 Beta supports Red Hat Enterprise Linux 8 hosts, it is important to note that Satellite 6.6 must be installed on a Red Hat Enterprise Linux 7 host. Support for running Satellite itself on a Red Hat Enterprise Linux 8 host is scheduled for a later release.

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Also: Serverless on Kubernetes, diverse automation, and more industry trends

IBM: OpenPOWER Foundation, Savings and the OpenStack Platform

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Red Hat
Hardware
  • OpenPOWER Foundation | The Next Step in the OpenPOWER Foundation Journey

    Today marks one of the most important days in the life of the OpenPOWER Foundation. With IBM announcing new contributions to the open source community including the POWER Instruction Set Architecture (ISA) and key hardware reference designs at OpenPOWER Summit North America 2019, the future has never looked brighter for the POWER architecture.

    OpenPOWER Foundation Aligns with Linux Foundation

    The OpenPOWER Foundation will now join projects and organizations like OpenBMC, CHIPS Alliance, OpenHPC and so many others within the Linux Foundation. The Linux Foundation is the premier open source group, and we’re excited to be working more closely with them.

    Since our founding in 2013, IEEE-ISTO has been our home, and we owe so much to its team. It’s as a result of IEEE-ISTO’s support and guidance that we’ve been able to expand to more than 350 members and that we’re ready to take the next step in our evolution. On behalf of our membership, our board of directors and myself, we place on record our thanks to the IEEE-ISTO team.

    By moving the POWER ISA under an open model – guided by the OpenPOWER Foundation within the Linux Foundation – and making it available to the growing open technical commons, we’ll enable innovation in the open hardware and software space to grow at an accelerated pace. The possibilities for what organizations and individuals will be able to develop on POWER through its mature ISA and software ecosystem will be nearly limitless.

  • How Red Hat delivers $7B in customer savings

    This spring, Red Hat commissioned IDC to conduct a new study to analyze the contributions of Red Hat Enterprise Linux to the global business economy. While many of the findings were impressive, including immense opportunities for partners, we were especially excited to learn more about how our customers benefit from Red Hat Enterprise Linux.

    According to the study, the world’s leading enterprise Linux platform "touches" more than $10 trillion of business revenues worldwide each year and provides economic benefits of more than $1 trillion each year to customers. Nearly $7 billion of that number comes in the form of IT savings. Even more exciting? As hybrid cloud adoption grows, we expect customers to continue to benefit given the importance of a common, flexible and open operating system to IT deployments that span the many footprints of enterprise computing.

  • The road ahead for the Red Hat OpenStack Platform

    If you didn't have a chance to attend our Road Ahead session at Red Hat Summit 2019 (or you did, but want a refresher) you'll want to read on for a quick update. We'll cover where Red Hat OpenStack Platform is today, where we're planning to go tomorrow, and the longer-term plan for Red Hat OpenStack Platform support all the way to 2025.

    A strategic part of our portfolio

    Red Hat OpenStack Platform is a strategic part of Red Hat's vision for open hybrid cloud. It's the on-prem foundation that can help organizations bridge the gap between today's existing workloads and emerging workloads. In fact, it just earned the 2019 CODiE award for "Best Software Defined Infrastructure."

    One of those emerging workloads, and more on the rest in a moment, is Red Hat OpenShift.

Is Fedora Linux a Good Distro? The 15 Best Reasons to Use Fedora Linux

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Red Hat

It goes without saying that Fedora Linux is one of the best Linux distributions and significantly distinct with its properties. There is no denying that it is an enticing version of Linux and there are enough reasons to be lured with the Fedora. It offers far ranges of features that have made it an undeniable choice for the users. There is a close and intimate collaboration between Fedora and “Redhat” what has given a new dimension of this Linux version. It is more comfortable to use, user-friendly and latest technology oriented; thus, there are many obvious reasons for loving in it.

[...]

The various distribution of Linux system is recognized for easy-going properties, albeit Fedora is the easiest one in this context. Having an easier interface, users are capable of dealing with it very easily since the boot phase. When the boot is done, users will be guided with simple features to run it the way they desire.

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Fedora: Dropping i686 and Flock Reports

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Red Hat
  • Approved: Fedora 31 To Drop i686 Everything/Modular Repositories

    The month-old proposal for the upcoming Fedora 31 Linux distribution release to stop with their i686 repositories for Everything and Modules was voted on today by the Fedora Engineering and Steering Committee.

    The FESCo group gave their formal approval today for permitting these i686 repositories to be removed beginning with Fedora 31. This also goes in-step with Fedora 31 having already decided to stop with their i686 kernel builds.

  • Living my best 4 days: Flock to Fedora 2019

    Months of waiting came to an end and finally, it was time to meet people with whom I have been working for the last 4 months, being on the other side of the screen. Things seemed different when our last Wednesday conference call ended with “Meet you soon” instead of a “Good Day”. The excitement of attending Flock to Fedora, was not only because the virtual interaction is turning to the real meeting but also, it was my first ever International trip. With approaching the 6th of August, the fear of travelling solo was getting on the peak, and at one moment I started questioning if all the trouble I underwent during last month was even worth it. But the time I met Shraddha(another intern working on the same project)at Bangalore airport, we happened to click so much at our first conversation that it was certain that at least my journey will not be me, and my headphones all the time.

    Since I reached Budapest a day before when everyone arrived, I got a handful of time discovering places, getting to know their culture and try on things we never tried before. The excitement of being at such a beautiful place did not make me realise that I was sleep-deprived, I had a jet lag of 4 hours and I was hungry. I spent the entire day roaming the streets, enjoying a breath of fresh air and exploring the city and ways of commute as well.

    Next day we shifted to the hotel that was booked for us and where the conference will be held. The ambience of the whole place was really nice and we met other fellow attendees at the conference.

  • rpminspect Presentation at Flock 2019

    Flock in Budapest was a great event. There were a lot of talks I wanted to attend, but could not make it to all of them. I did give one talk on my project called rpminspect.

    rpminspect is a project I started as a replacement for an internal Red Hat tool. I am working on integrating it in to the build workflow for Fedora but also allow package maintainers to use it locally as a build linter of sorts. Here is a link to the presentation I gave. I think there is video, but I am not sure where those are.

Red Hat: New PHP Builds, End-to-End Encryption for Kubernetes Applications, Interns

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Red Hat
  • PHP version 7.2.22RC1 and 7.3.9RC1

    Release Candidate versions are available in testing repository for Fedora and Enterprise Linux (RHEL / CentOS) to allow more people to test them. They are available as Software Collections, for a parallel installation, perfect solution for such tests (for x86_64 only), and also as base packages.

    RPM of PHP version 7.3.9RC1 are available as SCL in remi-test repository and as base packages in the remi-test repository for Fedora 30 or remi-php73-test repository for Fedora 28-29 and Enterprise Linux.

    RPM of PHP version 7.2.22RC1 are available as SCL in remi-test repository and as base packages in the remi-test repository for Fedora 28-29 or remi-php72-test repository for Enterprise Linux.

  • Self-Serviced, End-to-End Encryption for Kubernetes Applications, Part 2: a Practical Example

    In part one of this series, we saw three approaches to fully automate the provisioning of certificates and create end-to-end encryption. Based on feedback from the community suggesting the post was a bit too theoretical and not immediately actionable, this article will illustrate a practical example. You can see a recording of the demo here.

  • The Tiger that interned at Red Hat

    From the start, Tiger just had the right idea about looking for a college. Instead of reading US World News’ rankings, basing his decisions on sports teams, or even aiming for the Ivy Leagues, Tiger set out to make his college search a data driven effort. He asked himself, first, where he wanted to work. For him, that was an almost typical answer for an aspiring young technology student: Google, Facebook, Red Hat and other big name tech firms.

    [...]

    Tiger's real name is Passawit Kaovilai, and he's now entering his third year at NC State. He said that many people in his native Thailand have nicknames, and that his translates well into any language, and is understood immediately. He was also born in the year of the tiger, so the name is a natural fit.

    Here at Red Hat, Tiger has taken on the duties of a technical marketing intern. That means he's been diving into Red Hat OpenShift 4 to help create documentation and learning tools for users in the field. That also means contributing to open source projects, and getting his handle out there on GitHub, however modestly.

Fedora and Red Hat: New F30 Builds, Flock Report, Servers and Package Management Domain Model

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Red Hat
Server
  • Ben Williams: F30-20190818 updated isos released.

    The Fedora Respins SIG is pleased to announce the latest release of Updated F30-20190816 Live ISOs, carrying the 5.2.8-200 kernel.

    This set of updated isos will save considerable amounts of updates after install. ((for new installs.)(New installs of Workstation have 1.2GB of updates)).

    A huge thank you goes out to irc nicks dowdle, satellite,Southern-Gentlem for testing these iso.

  • Flock to Fedora 2019 Conference report

    Last week I attended “Flock to Fedora” conference in Budapest, Hungary. It was a Fedora contributors conference where I met some developers, project leaders, GSoC interns. Below is a brief report of my attendance.

  • What salary can a sysadmin expect to earn?

    The path to reliable salary data sometimes is sometimes paved with frustration. That’s because the honest answer to a reasonable question—what should I be paid for this job?—is usually: "It depends."

    Location, experience, skill set, industry, and other factors all impact someone’s actual compensation. For example, there’s rarely a single, agreed-upon salary for a particular job title or role.

    All of the above applies to system administrators. It’s a common, long-established IT job that spans many industries, company sizes, and other variables. While sysadmins may share some common fundamentals, it’s certainly not a one-size-fits-all position, and it’s all the truer as some sysadmin roles evolve to take on cloud, DevOps, and other responsibilities.

    What salary can you expect to earn as a sysadmin? Yeah, it depends. However, that doesn’t mean you can’t get a clear picture of what sysadmin compensation looks like, including specific numbers. This is information worth having handy if you’re a sysadmin on the job market or seeking a promotion.

    Let’s start with some good news from a compensation standpoint. Sysadmins—like other IT pros these days—are in demand.

    "In today’s business environment, companies are innovating and moving faster than ever before, and they need systems that can keep up with the pace of their projects and communications, as well as help everything run smoothly," says Robert Sutton, district president for the recruiting firm Robert Half Technology. "That’s why systems administrators are among the IT professionals who can expect to see a growing salary over the next year or so."

  • Run Mixed IT Efficiently, The Adient – SUSE Way.

    When you have multiple distributions, such as Red Hat and SUSE, you can reduce administration complexity and save administration time and resources with a common management tool. Adient had applications running on both SUSE Linux Enterprise Server and Red Hat Enterprise Linux. Adient deployed SUSE Manager to manage their Mixed IT environment involving both distributions.

  • Package Management Domain Model

    When I wrote this model, we were trying to unify a few different sorts of packages. Coming from SpaceWalk, part of the team was used to wokring on RPMS with the RPM Database for storage, and Yum as the mechanism for fetching them. The other part of the team was coming from the JBoss side, working with JAR, WAR, EAR and associated files, and the Ivy or Maven building and fetching the files.

    We were working within the context of the Red Hat Network (as it was then called) for delivering content to subscribers. Thus, we had the concept of Errata, Channels, and Entitlements which are somewhat different from what other organizations call these things, but the concepts should be general enough to cover a range of systems.

    There are many gaps in this diagram. It does not discuss the building of packages, nor the relationship between source and binary packages. It also does not provide a way to distinguish between the package storage system and the package fetch mechanism.

    But the bones are solid. I’ve used this diagram for a few years, and it is useful.

Fedora 29 to 30 upgrade - How it went

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Red Hat

Alas, my Fedora 30 experience started strong with the first review and soured since. The test on the old laptop with Nvidia graphics highlighted numerous problems, including almost ending up in an unbootable state due to the wrong driver version being selected by the software center. With the in-vivo upgrade, I almost ended up in a similar state due to some incompatibility with extensions. I wasn't pleased by other glitches and errors, and the performance improvement margin isn't as stellar as the clean install test.

All in all, Fedora 30 feels like a rather buggy release, with tons of problems. I think versions 27 to 29 were quite robust overall, at least the Gnome version, but the latest edition is quite rough. That would mean I'd advise people upgrading to take care of their data, remember the possible snags like extensions, and triple check their hardware is up to the task, because apparently QA isn't cool anymore, and no one else will do this for you. All in all, Fedora 30 is very bleeding edge, finicky, definitely not for everyday use by ordinary desktop folks. It's a dev tool for devs, so if you want something stable and boring, search elsewhere.

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Games: Loria, Dota Underlords and Steam in China

  • Classic inspired RTS Loria is now available DRM-free on GOG

    If you're like me and you enjoy a good real-time strategy game, Loria is actually pretty good. It added Linux support on Steam earlier this year and now it's also available on GOG. While it's inspired by titles like Warcraft II, it's not just a retro RTS. There's a few RPG-like elements including hero units, item collection, quests and more.

  • The Underlords are actually coming to Dota Underlords, plus a new Duos mode

    Valve continue to push out changes rapidly to their auto-battler Dota Underlords, with some of their upcoming plans now being detailed in a fresh update. One big new feature planned to be available in a few weeks is a new Duos game mode. Valve say it's a new way to play cooperatively with a friend. You party up and battle against other teams and it will support both Casual and Ranked play. The actual Underlords are going to be making an appearance soon too. This feature Valve said they're "excited" about, as they're a "core part of the game". They haven't said how they will work but they will "add a layer of fun and strategy to every match" so I'm very curious to see what happens.

  • Steam for China Is Called 'Zhengpi Pingtai'

    The digital games service will be run almost entirely independent of Steam and by Valve's Chinese partner company Perfect World.

Samsung Galaxy Note 10 now links up with Windows and Mac PCs via supercharged DeX app

And there’s a big bonus here in the form of being able to drag-and-drop files directly from your phone to your PC, and vice versa. So you could take a photo from your Note 10 and whip it onto the PC to tweak it up in a proper heavyweight image editor, for example. Furthermore, as XDA Developers observes, Linux on DeX is available via the DeX app, allowing you to create a container and run an Ubuntu Linux image, giving you even more flexibility and options here. It’s not clear what Samsung intends to do in terms of giving users with older Galaxy handsets backwards compatibility, but at the moment, this is strictly a Galaxy Note 10-only affair, as mentioned. Finally, it’s worth noting that the app does warn that your phone might get hot running the DeX application, although exactly how hot likely depends on what you’ve got the hardware doing, of course. Read more

Android Leftovers

today's leftovers

  • Open Policy Agent: Cloud-native security and compliance

    Every product or service has a unique way of handling policy and authorization: who-can-do-what and what-can-do-what. In the cloud-native world, authorization and policy are more complex than ever before. As the cloud-native ecosystem evolves, there’s a growing need for DevOps and DevSecOps teams to identify and address security and compliance issues earlier in development and deployment cycles. Businesses need to release software on the order of minutes (instead of months). For this to happen, those security and compliance policies—which in the past were written in PDFs or email—need to be checked and enforced by machines. That way, every few minutes when software goes out the door, it’s obeying all of the necessary policies. This problem was at the top of our minds when Teemu Koponen, Torin Sandall, and I founded the Open Policy Agent project (OPA) as a practical solution for the critical security and policy challenges of the cloud-native ecosystem. As the list of OPA’s successful integrations grows—thanks to active involvement by the open source community—the time is right to re-introduce OPA and offer a look at how it addresses business and policy pain points in varied contexts.

  • Eirini: Mapping Code into Containers

    There has been a lot of noise recently about the Project known as Eirini.  I wanted to dig into what this project was in a little more detail. If you weren’t already aware, its goal is to allow Cloud Foundry to use any scheduler but it’s really for allowing the workloads to run directly inside Kubernetes without needing separately scheduled Diego cells to run on top of. There are many reason that this is a fantastic change, but the first and foremost is that having a scheduler run inside another scheduler is begging for headaches. It works, but there are odd edge cases that lead to split-brain decisions. NOTE: There is another project (Quarks) that is working on containerizing the control plane in a way that the entire platform is more portable and requiring significantly less overhead. (As in: you can run Kubernetes, the entire platform, and some work, all on your laptop)  

  • Wayland Buddies | LINUX Unplugged 315

    We spend our weekend with Wayland, discover new apps to try, tricks to share, and dig into the state of the project. Plus System76's new software release, and Fedora's big decision.

  • Kdenlive 19.08 Released with Clip Speed, Project Bin Improvements

    Busy trying to salvage footage from a recent video shoot, I missed the arrival of Kdenlive 19.08, the first major release of this free video editor since its big code revamp earlier this year. And what a release it is! Kdenlive 19.08 builds on the terrific work featured in the various point releases that have been available since April. “This version comes with a big amount of fixes and nifty new features which will lay the groundwork for the 3 point editing system planned for this cycle,” they say in their release announcement. Now, 3-point editing isn’t my bag (if you’re a heavy keyboard user, you might want to look into it) so I’m gonna skip that side of things to highlight a couple of other welcome changes to the project bin.

  • LabPlot's Welcome screen and Dataset feature in the finish line

    Hello Everyone! This year's GSoC is coming to its end. Therefore I think that I should let you know what's been done since my last blog post. I would also like to evaluate the progress I managed to make and the goals set up at the beginning of this project. As I told you in my last post, my main goal, in this last period, was to clean up, properly document, refactor, optimise the code and make it easier to read, so it would be fit to be brought to the master branch and to be used by the community. My next proposition was to search for bugs and fix them, in order to make the implemented features more or less flawless. I can happily state, that I succeeded in this.

  • Distributed Beta Testing Platforms

    Do they exist? Especially as free software? I don’t actually know, but I’ve never seen a free software project use something like what I’ve got in mind. That would be: a website where we could add any number of test scenarios. People who wanted to help would get an account, make a profile with their hardware and OS listed. And then a couple of weeks before we make a release, we’d release a beta, and the beta testers would login and get randomly one of the test scenarios to test and report on. We’d match the tests to OS and hardware, and for some tests, probably try to get the test executed by multiple testers. Frequent participation would lead to badges or something playful like that, they would be able to browse tests, add comments and interact — and we, as developers, we’d get feedback. So many tests executed, so many reported failure or regressions, and we’d be able to improve before the release.

  • GSoC 2019 Final submission

    Since my last blog post the main merge request of my GSoC project has landed and after that I followed up with subsequent bugfixes and also a couple of enhancements to the savestates manager.

  • LXLE 18.04.3 Beta Run Through

    In this video, we are looking at LXLE 18.04.3 Beta.

  • Fedora Update Weeks 31–32

    The branch point also meant that the Change Code Complete deadline was passed. As part of the Go SIG, I was one of the packagers behind the Adopt new Go Packaging Guidelines Change. As mentioned in the last post, this was mostly handled by @eclipseo and the tracker bug was marked complete for it just earlier. I am also behind the Automatic R runtime dependencies Change. As part of this Change, I initiated a mini-rebuild last week of all affected R packages. I will write about that in a separate post. That tracker bug is now Code Complete, though there are a couple FTBFS to fix up. With release monitoring working again, that meant a slew of new bug reports about new package versions being available. This happened just last Friday, so I haven’t had much chance to update everything. I did manage to go through almost all the R packages, except for a few with new dependencies. I also updated one or two Go and Python packages as well.

  • Rugged, Kaby Lake-U based IoT gateway offers Linux BSP

    Axiomtek’s Linux-ready, DIN-rail mounted “ICO500-518” IoT gateway runs on 7th Gen Core U-series CPUs and provides swappable SATA, 4x USB 3.0, 2x GbE, 2x mini-PCIe, and 2x “PIM” slots for options including 8x GbE or isolated serial and CANBus. Axiomtek announced a compact modular edge gateway with ruggedization features for industrial IoT. Applications for the Intel 7th Gen Kaby Lake-U based ICO500-518 include transportation, public utility, smart building, solar energy, and factory automation.

  • 5 Reasons to Use a VM for Development [Ed: Dice promoting the idea that developers should use Windows and keep GNU/Linux in a VM jail using Microsoft's proprietary tools]

    I started using virtual machines (VMs) on my development PC about six years ago; I was keen to learn Linux, having been a Windows developer since the mid-1990s. At first, I used an old Windows PC and installed a Linux distro on it; but I quickly found out that the distro took up a lot of space, and I needed a KVM switch to manage two different PCs. It was all a bit “fiddly,” which is why I began exploring the potential of VMs. Discovering VirtualBox was a godsend, and made things a lot more convenient. Despite all the flak Oracle gets over its databases, MySQL, and Java, Virtual Box remains an excellent and free open-source package.