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Servers: Concurrency, Purism, InSpec, Kubernetes, Docker/Containers

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  • Thinking Concurrently: How Modern Network Applications Handle Multiple Connections

    The idea behind a process is fairly simple. A running program consists of not only executing code, but also data and some context. Because the code, data and context all exist in memory, the operating system can switch from one process to another very quickly. This combination of code + data + context is known as a "process", and it's the basis for how Linux systems work.

    When you start your Linux box, it has a single process. That process then "forks" itself, such that two identical processes are running. The second ("child") process reads new code, data and context ("exec"), and thus starts running a new process. This continues throughout the time that a system is running. When you execute a new program on the command line with & at the end of the line, you're forking the shell process and then exec'ing your desired program in its place.

  • New Purist Services – Standard Web Services Done Ethically

    When you sign up for a communication service, you are typically volunteering to store your personal, unencrypted data on someone else’s remote server farm. You have no way of ensuring that your data is safe or how it is being used by the owner of the server. However, online services are incredibly convenient especially when you have multiple devices.

  • Automated compliance testing with InSpec

    Don't equate compliance through certification with security, because compliance and security are not the same. We look at automated compliance testing with InSpec for the secure operation of enterprise IT.

  • How the Kubernetes Certification Ensures Interoperability

    Dan Kohn, executive director of the Cloud Native Computing Foundation, has called the launch of the new Kubernetes service provider certification program the most significant announcement yet made by the Foundation around the open source container orchestration engine.

    On this new episode of The New Stack Makers from KubeCon + CloudNativeCon 2017, we’ll learn more from Kohn and William Denniss, a product manager at Google, about how the program can help ensure interoperability and why that’s so important.

  • Container Structure Tests: Unit Tests for Docker Images

    Usage of containers in software applications is on the rise, and with their increasing usage in production comes a need for robust testing and validation. Containers provide great testing environments, but actually validating the structure of the containers themselves can be tricky. The Docker toolchain provides us with easy ways to interact with the container images themselves, but no real way of verifying their contents. What if we want to ensure a set of commands runs successfully inside of our container, or check that certain files are in the correct place with the correct contents, before shipping?

  • Prometheus vs. Heapster vs. Kubernetes Metrics APIs

    In this blog post, I will try to explain the relation between Prometheus, Heapster, as well as the Kubernetes metrics APIs and conclude with the recommended way how to autoscale workloads on Kubernetes.

  • Google Introduces Open Source Framework For Testing Docker Images

    Google has announced a new framework designed to help developers conduct unit tests on Docker container images. 

    The Container Structure Test gives enterprises a way to verify the structure and contents of individual containers to ensure that everything is as it should be before shipping to production, the company said in the company’s Open Source blog Jan. 9. 

    Google has been using the framework to test containers internally for more than a year and has released it publicly because it offers an easier way to validate the structure of Docker containers than other approaches, the company said.

More in Tux Machines

Games: HITMAN and Atari VCS

More Android Leftovers

  • A Look at Google's Project Fi
    Project Fi is a play on the term "WiFi" and is pronounced "Project Fye", as opposed to "Project Fee", which is what I called it at first. Several features set Project Fi apart from other cell-phone plans. First, Project Fi uses towers from three carriers: T-Mobile, US Cellular and Sprint. When using supported hardware, Project Fi constantly monitors signal strength and seamlessly transitions between the various towers. Depending on where you live, this can mean constant access to the fastest network or a better chance of having any coverage at all. (I'm in the latter group, as I live in a rural area.)
  • OnePlus 5 and 5T's latest OxygenOS Open Beta bring Google Lens support
    While the last OxygenOS Open Beta update for the OnePlus 5 and OnePlus 5T was a significant upgrade bringing support for Project Treble, the latest versions for both devices offer smaller changes.
  • Google EU fine over Android likely this week
     

    The European Commission, the executive arm of the EU, normally makes such announcements on a Wednesday.

  • Moment of truth for Google as record EU antitrust fine looms
     

    It comes just over a year after the Commission slapped a landmark 2.4-billion-euro ($2.8 billion) penalty on Google, a unit of Alphabet Inc, for favoring its shopping service over those of competitors.  

    The EU penalty is likely to exceed the 2017 fine because of the broader scope of the Android case, sources familiar with the matter have told Reuters.  

OSS Leftovers

  • Medellín WordPress User Group Celebrates Open Source CMS Platform’s 15th Anniversary
    Medellín is well known for its innovative technology scene, with many active software and information technology user groups. One of those is the user group centered around open source content management software WordPress. A year ago the user group hosted Colombia’s first Wordcamp function, supported by the global WordPress community, and the user group recently gathered to celebrate the 15th anniversary of the first WordPress open source software release that took place May 27, 2003. WordPress is an free, open source software platform that allows amateur and professional users to create websites without writing programming code. Over the years it has grown into a powerful platform robust enough to run enterprise websites in many cases. For example, Finance Colombia runs on WordPress software.
  • Training: Embedded Linux and Security training day – Reading
    Providing detailed hands-on training, it is targeted at embedded engineers looking for an introduction to key embedded Linux and Security topics.
  • Amazing solar panel device that could change the world goes open source
    An innovative and simple solar panel efficiency device has just gone open source in order to get renewable energy to those who need it most. When you picture solar power, you might think of the enormous Ivanpah solar power plant in California (the largest in the world) or huge tracts of land in other sun-drenched parts of the globe. But not everyone has access to such enormous grids and particularly in remote villages in developing nations, there is only a need for a single or small group of solar panels that could maintain maximum efficiency to sustain a family or the village itself.
  • Meet the man in charge of Arduino

    I went to visit the Interaction Design Institute of Ivrea – a school that was started just six months before I went to visit them – and they asked me if I knew someone who could teach electronics to designers and to ask this question to my colleagues at the Politecnico.

    I went back and they said “No! Teaching electronics to designers? For us?” Those were guys working on highly sophisticated FGPAs, so they didn’t care about designers. I thought about Massimo – he had a real passion for electronics and he worked as a CTO for an internet provider at that point in time. I said, “Massimo, you could be the right person for this type of engagement – they’re designers, you love design, and you know electronics.” I introduced Massimo to the school and they hired him. That’s how the story started. When he was teaching at the Design Institute of Ivrea, they started the Arduino project as a way to standardise the electronics projects the students were doing. I introduced Massimo to the school and they invented Arduino, so I’m sort of the great-grandfather to some extent.

  • pinp 0.0.6: Two new options
    A small feature release of our pinp package for snazzier one or two column vignettes get onto CRAN a little earlier. It offers two new options. Saghir Bashir addressed a longer-standing help needed! issue and contributed code to select papersize options via the YAML header. And I added support for the collapse option of knitr, also via YAML header selection. A screenshot of the package vignette can be seen below. Additional screenshots of are at the pinp page.
  • OpenMP 5.0 Public Draft Released
    The public draft of the OpenMP 5.0 SMP programming standard is now available for review ahead of the specification's expected stable release before the end of 2018. OpenMP 5.0 is expected to succeed the OpenMP 4.5 parallel programming standard in Q4'2018, but for ironing out any last minute issues and allowing more compiler developers to begin implementing the standard, the public draft is now available.

FUD, EEE, and Openwashing