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Server: Ubuntu Server, Canonical's Embrace of Buzzwords and LF on Storage

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Server
  • Ubuntu Server development summary – 11 September 2018

    Cloud-init version 18.3.39 adds jinja template support for user-data scripts and cloud config. As part of this feature, any cloud metadata crawled by cloud-init is presented as template variables. Any cloud-provided metadata such as ip addresses, hostname, region, availability_zone can be referenced in user-data cloud config or scripts without having to crawl and parse metadata in separate tooling.

    Since cloud-init generalizes some of this instance metadata across all clouds, it now allows user-data to be more flexible when deploying to different cloud platforms. See Using instance metadata for more information.

  • What is multi-cloud?

    Tech companies, Canonical included, have a problem. That problem is living in buzzwords and jargon, and then assuming everyone knows what we are talking about.

    At Canonical we call them ‘Canonicalisms’, other companies have their own names for it.

    Whilst we can joke about it, this over-reliance on jargon is a genuine barrier to our audience, developers, customers, people in need of technical help, people in need of assistance in understanding what all these buzzwords are. The jargon is a barrier to people understand what something like the cloud is, in its many different guises, and how these different architectures and strategies can be used for tangible business benefits.

    Fortunately, that’s a problem which is solvable.

    Canonical has decided to produce a whitepaper that details everything you need to know to understand every type of cloud from public to private and managed to multi-cloud. But, we haven’t stopped there, because these technologies don’t live in a bubble, they’re connected to technologies such as Kubernetes, containers, serverless computing, servers and virtual machines.

    Still, understanding the basics about these different technologies is only a piece of the picture, which is why we’ve also included guidance on the best strategies to use, use cases, when and where to deploy and make it a success.

  • Know Your Storage: Block, File & Object

    Dealing with the tremendous amount of data generated today presents a big challenge for companies who create or consume such data. It’s a challenge for tech companies that are dealing with related storage issues.

More in Tux Machines

Qt/KDE: Qt for Python, Inkscape Dark Theme on KDE Plasma, Atelier at Maker Faire and QtCon 2018!

  • Python and Qt: 3,000 hours of developer insight
    With Qt for Python released, it’s time to look at the powerful capabilities of these two technologies. This article details one solopreneur’s experiences. [...] The big problem with Electron is performance. In particular, the startup time was too high for a file manager: On an admittedly old machine from 2010, simply launching Electron took five seconds. I admit that my personal distaste for JavaScript also made it easier to discount Electron. Before I go off on a rant, let me give you just one detail that I find symptomatic: Do you know how JavaScript sorts numbers? Alphabetically. ’nuff said. After considering a few technologies, I settled on Qt. It’s cross-platform, has great performance and supports custom styles. What’s more, you can use it from Python. This makes at least me orders of magnitude more productive than the default C++.
  • Inkscape Dark Theme on KDE Plasma
    On KDE Plasma, it's very easy to setup Inkscape Dark Theme. To do so, go to System Settings > Application Style > GNOME/GTK+ Style > under GTK+ Style: switch all themes to Dark ones and give check mark to Prefer Dark Theme > Apply. Now your Inkscape should turned into dark mode. To revert back, just revert the theme selections. This trick works on Kubuntu or any other GNU/Linux system as long as it uses Plasma as its desktop environment.
  • Atelier at Maker Faire and QtCon 2018!
    On the weekend of November 3 and 4, it happened on Rio de Janeiro the first Maker Faire of Latin America. And I was able to do a talk about Atelier and the current status of our project. The event hold more than 1.500 people on the first day, that saw a lot of talks and the exposition of makers of all over the country that came to Rio to participate in this edition of the Maker Faire.

Security: Updates, Systematic Evaluation of Transient Execution Attacks and Defenses, New IoT Security Regulations and GPU Side-Channel Attacks

  • Security updates for Thursday
  • A Systematic Evaluation of Transient Execution Attacks and Defenses

    [...] we present a sound and extensible systematization of transient execution attacks. Our systematization uncovers 7 (new) transient execution attacks that have been overlooked and not been investigated so far. This includes 2 new Meltdown variants: Meltdown-PK on Intel, and Meltdown-BR on Intel and AMD. It also includes 5 new Spectre mistraining strategies. We evaluate all 7 attacks in proof-of-concept implementations on 3 major processor vendors (Intel, AMD, ARM). Our systematization does not only yield a complete picture of the attack surface, but also allows a systematic evaluation of defenses. Through this systematic evaluation, we discover that we can still mount transient execution attacks that are supposed to be mitigated by rolled out patches.

  • New IoT Security Regulations
    Due to ever-evolving technological advances, manufacturers are connecting consumer goods­ -- from toys to light bulbs to major appliances­ -- to the Internet at breakneck speeds. This is the Internet of Things, and it's a security nightmare. The Internet of Things fuses products with communications technology to make daily life more effortless. Think Amazon's Alexa, which not only answers questions and plays music but allows you to control your home's lights and thermostat. Or the current generation of implanted pacemakers, which can both receive commands and send information to doctors over the Internet. But like nearly all innovation, there are risks involved. And for products born out of the Internet of Things, this means the risk of having personal information stolen or devices being overtaken and controlled remotely. For devices that affect the world in a direct physical manner -- ­cars, pacemakers, thermostats­ -- the risks include loss of life and property.
  • University Researchers Publish Paper On GPU Side-Channel Attacks
    University researchers out of University of California Riverside have published a paper this week detailing vulnerabilities in current GPU architectures making them vulnerable to side-channel attacks akin to Spectre and Meltdown. With their focus on NVIDIA GPUs, UCLA Riverside researchers demonstrated attacks both for graphics and compute by exploiting the GPU's performance counters. Demonstrated attacks included a browser-based attack, extracting passwords / keystroke logging, and even the possibility of exposing a CUDA neural network algorithm.

VirtualBox 6.0 Beta 2

  • Announcement: VirtualBox 6.0 Beta 2 released
    Please do NOT use this VirtualBox Beta release on production machines! A VirtualBox Beta release should be considered a bleeding-edge release meant for early evaluation and testing purposes. You can download the binaries here: http://download.virtualbox.org/virtualbox/6.0.0_BETA2 Please do NOT open bug reports at our public bugtracker but use our VirtualBox Beta Feedback forum at https://forums.virtualbox.org/viewforum.php?f=15 to report any problems with the Beta. Please concentrate on reporting regressions since VirtualBox 5.2! Version 6.0 will be a new major release. Please see the forum at https://forums.virtualbox.org/viewtopic.php?f=15&t=90315 for an incomplete list of changes. Thanks for your help! Michael
  • VirtualBox 6.0 Beta 2 Adds File Manager For Host/Guest File Copies, OS/2 Shared Folder
    Last month Oracle rolled out the public beta of VirtualBox 6.0 though didn't include many user-facing changes. They have now rolled out a second beta that does add in a few more features. VirtualBox 6.0 Beta 2 was released today and to its user-interface is a new file manager that allows the user to control the guest file-system with copying file objects between the host and guest. Also improved with VirtualBox 6.0 Beta 2 is better shared folder auto-mounting with the VBox Guest Additions. This beta even brings initial shared folder support to the guest additions for OS/2.

Thunderbird version 60.3.1 now Available, Includes Fixes for Cookie Removal and Encoding Issues

Thunderbird happens to be one of the most famous Email client. It is free and an open source one which was developed by the Mozilla Foundation back in 2003, fifteen years ago. From a very basic interface, it has come a long way to be what it is today in 2018. With these updates, a recent one into the 60.x series from the 52.x series was a significant one. While the 60.x (60.3.0) update started rolling out, Mozilla was keen to push out 60.3.1. This new version of Thunderbird had a few bugs and kinks here and there which needed to be addressed which Mozilla did, most of them at least. Read more