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Ubuntu: Sandra Henry-Stocker, Ubuntu Blog, and Newsletter

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Ubuntu
  • Taking control of your Ubuntu desktop

    You may have a lot more control over your Ubuntu desktop than you know. In this post, we'll look into what you should expect to see by default and how you can change that.

    Most Linux desktops start out charmingly uncluttered. They display a handful of icons on an attractive background. These include shortcuts for launching applications, generally along the left side or bottom of the screen, and maybe another icon or two in the otherwise open area.

    The uncluttered desktop is generally a good thing. You can open folders using your file manager and move around to any group of files that you need to use or update. By changing a setting on Ubuntu (and related distributions), however, you can also set up your system to open with a specified set of files in view – and you don't have to move them into your Desktop folder to do so.

  • Ubuntu Blog: From lightweight to featherweight: MicroK8s memory optimisation

    If you’re a developer, a DevOps engineer or just a person fascinated by the unprecedented growth of Kubernetes, you’ve probably scratched your head about how to get started. MicroK8s is the simplest way to do so. Canonical’s lightweight Kubernetes distribution started back in 2018 as a quick and simple way for people to consume K8s services and essential tools. In a little over two years, it has matured into a robust tool favoured by developers for efficient workflows, as well as delivering production-grade features for companies building Kubernetes edge and IoT production environments. Optimising Kubernetes for these use cases requires, among other things, some problem-solving around memory consumption for affordable devices of small form factors.

  • Ubuntu Blog: DISA has released the Ubuntu 20.04 LTS STIG benchmark

    The Security Technical Implementation Guides (STIG) are developed by the Defense Information System Agency (DISA) for the U.S. Department of Defense. They are configuration guidelines for hardening systems to improve security. They contain technical guidance which when implemented, locks down software and systems to mitigate malicious attacks.

  • The Fridge: Ubuntu Weekly Newsletter Issue 678

    Welcome to the Ubuntu Weekly Newsletter, Issue 678 for the week of April 4 – 10, 2021.

Canonical Announces MicroK8s Optimization Updates

  • Canonical Announces MicroK8s Optimization Updates

    Canonical has announced the optimization of MicroK8s, its lightweight Kubernetes distribution.

    Started in 2018, MicroK8s has matured into a robust tool favoured by developers for efficient workflows and delivering production-grade features for companies building Kubernetes edge and IoT production environments.

MicroK8s footprint shrinks by a third for easier Pi and Jetson

  • MicroK8s footprint shrinks by a third for easier Pi and Jetson clusters

    Canonical released MicroK8s 1.21, featuring a 32.5 percent smaller footprint to enable Kubernetes deployments of 540MB, thereby easing clustering on platforms such as the Raspberry Pi and Nvidia Jetson.

    Canonical took another step toward expanding the use of MicroK8s containers on low-power edge devices with the release of version 1.21 of MicroK8s, the stripped down, single-node version of Kubernetes. Released in conjunction with Kubernetes 1.21, which also extends to the Charmed Kubernetes and kubeadm variants, MicroK8s 1.21 has a 32.5 percent smaller RAM footprint than v1.20, “as benchmarked against single node and multi-node deployments,” says Canonical.

    [...]

    For server implementations on x86-based devices, meanwhile, MicroK8s 1.21 joins Kubernetes 1.21 in adding “seamless integration” of MicroK8s with Nvidia’s latest version of its GPU Operator, which helps provision GPU worker nodes in a Kubernetes cluster. MicroK8s can now consume a GPU or even a Multi-instance GPU (MIG) using a single command and is compatible with specialized Nvidia hardware such as the DGX and EGX.

    MicroK8s is typically used for offline development, prototyping, and testing of Kubernetes (k8s) applications on a desktop before deploying them to the cloud as appliances. However, in Oct. 2019, Canonical began expanding the applicability of MicroK8s on edge devices for applications such as clustering when it announced a new feature in Ubuntu 19.10 that enabled “strict confinement” support for MicroK8s. Strict confinement of the non-elastic, rails-based MicroK8s enabled complete isolation and a tightly secured production-grade Kubernetes environment within a small footprint that could run on the Raspberry Pi 4.

From SJVN

  • Canonical's mini-Kubernetes, MicroK8s, has been optimized for Raspberry Pi

    To say Kubernetes, everyone's top container orchestration pick, is hard to master is an understatement. Kubernetes doesn't have so much as a learning curve as it does a learning cliff. But, Canonical's MicroK8s lets you learn to climb it in your home. And, with its latest release, it's easier than ever to set up a baby Kubernetes cluster using inexpensive Raspberry Pi or NVIDIA Jetson single-board computers (SBC).

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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.