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today's leftovers

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Misc
  • Blog: Building a Kubernetes Edge (Ingress) Control Plane for Envoy v2

    Kubernetes has become the de facto runtime for container-based microservice applications, but this orchestration framework alone does not provide all of the infrastructure necessary for running a distributed system. Microservices typically communicate through Layer 7 protocols such as HTTP, gRPC, or WebSockets, and therefore having the ability to make routing decisions, manipulate protocol metadata, and observe at this layer is vital. However, traditional load balancers and edge proxies have predominantly focused on L3/4 traffic. This is where the Envoy Proxy comes into play.

    Envoy proxy was designed as a universal data plane from the ground-up by the Lyft Engineering team for today’s distributed, L7-centric world, with broad support for L7 protocols, a real-time API for managing its configuration, first-class observability, and high performance within a small memory footprint. However, Envoy’s vast feature set and flexibility of operation also makes its configuration highly complicated – this is evident from looking at its rich but verbose control plane syntax.

    With the open source Ambassador API Gateway, we wanted to tackle the challenge of creating a new control plane that focuses on the use case of deploying Envoy as an forward-facing edge proxy within a Kubernetes cluster, in a way that is idiomatic to Kubernetes operators. In this article, we’ll walk through two major iterations of the Ambassador design, and how we integrated Ambassador with Kubernetes.

  • RIP Dr Peuto, Zilog and Sun's bright SPARC

    The 16-bit Z8000 was the big brother of the 8-bit Z80, used in the first wave of low cost microcomputers like the Spectrum and TRS80, but had a starring role in its own right. As a 16-bit CPU it powered several Unix systems, including Commodore, Olivetti and Onyx, as well as Zilog's own System 8000 machines.

    Astonishingly, the ambitious project began in early 1976, long before the personal workstation was a market.

  • Reading the Output of a Weather Station Using Software Defined Radio

    A while back, Dave ordered a weather station. His research pointed to the Ambient Weather WS-2000 as the best bang for the buck as far as accuracy (after it's calibrated, which is a time consuming and exacting process that I suspect most weather station owners don't bother with). It comes with a "console", a little 7" display that sits indoors and reads the radio signal from the outside station as well as a second thermometer inside, then displays all the current weather data. It also uses wi-fi to report the data upstream to Ambient and, optionally, to a weather site such as Wunderground. (Which we did for a while, but now Wunderground is closing off their public API, so why give them data if they're not going to make it easy to share it?)

  • Tiny module runs Linux on i.MX8M Mini

    F&S unveiled a 40 x 35mm “PicoCore MX8MM” module that runs Linux on an up to quad-A53, 1.8GHz i.MX8 Mini with up to 8GB LPDDR4 and 32GB eMMC plus WiFi/BT, a GbE controller, PCIe, and optional -40 to 85°C support.

    F&S Elektronik Systeme pre-announced a tiny PicoCore MX8MM compute module featuring NXP’s new i.MX8 Mini — an i.MX8M variant with lower video resolution, but a faster clock rate. In September, Variscite announced a slightly larger (55 x 30mm) DART-MX8M-Mini COM with the Mini SoC, and Boundary Devices recently revealed details on a Nitrogen8M-Mini SBC. None of these boards appear to have shipped in volume.

More in Tux Machines

digiKam 7.7.0 is released

After three months of active maintenance and another bug triage, the digiKam team is proud to present version 7.7.0 of its open source digital photo manager. See below the list of most important features coming with this release. Read more

Dilution and Misuse of the "Linux" Brand

Samsung, Red Hat to Work on Linux Drivers for Future Tech

The metaverse is expected to uproot system design as we know it, and Samsung is one of many hardware vendors re-imagining data center infrastructure in preparation for a parallel 3D world. Samsung is working on new memory technologies that provide faster bandwidth inside hardware for data to travel between CPUs, storage and other computing resources. The company also announced it was partnering with Red Hat to ensure these technologies have Linux compatibility. Read more

today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.