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today's howtos

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HowTos
  • Install Kubernetes Using Minikube In CentOS Linux - OSTechNix

    Kubernetes can be installed and configured in a variety of ways, including on personal computers, physical servers, virtual machines, and as a cloud service. We will learn how to install a single node Kubernetes cluster using Minikube in CentOS Linux.

    For the purpose of this guide, we will install Minikube on CentOS 7 natively running on top of the virtual machine layer. Before installing Kubernetes, you need to have a basic understanding of Kubernetes and its architecture and containers. Please refer to our previous article attached below to know about the concepts.

  • How To Install Eclipse IDE on Debian 11 - idroot

    In this tutorial, we will show you how to install Eclipse IDE on Debian 11. For those of you who didn’t know, Eclipse is an open-source integrated development environment (IDE) that helps programmers develop software applications and software components by providing developers with tools to compile code, and many more. It supports many plugins to enhance the capabilities to use for other programming languages development environments such as PHP, C++, and JavaScript.

    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 through the step-by-step installation of the Eclipse on a Debian 11 (Bullseye).

  • How to install KVM server on Debian 9/10 Headless Server - nixCraft

    Kernel-based Virtual Machine (KVM) is a virtualization module for the Linux kernel that turns it into a hypervisor. How can I install KVM with bridged networking, setup guest operating system as the back-end virtualization technology for non-graphic Debain Linux 9.x/10.x server?

    You can use KVM to run multiple operating systems such as Windows, *BSD, Linux distribution using virtual machines. Each virtual machine has its private disk, graphics card, a network card and more.

  • How to install RVM- Ruby Version Manager on Ubuntu 20.04 LTS

    RVM- Ruby Version Manager is a tool meant to use the command line for installing and managing the various ruby versions easily. Here we see the commands for installation of RVM on Ubuntu 20.04 LTS Focal fossa.

  • How to stop Firefox from auto updating in Linux

    In Linux, Firefox has this bad habit of wanting to update itself when you’re not ready to perform that task. And it will not let you open a new tab or window until you allow it to apply the update. I find it very annoying. There are any number of knobs you can tune to disable this feature in about:config, but there’s no guarantee that they’ll work as expected. And if you use more than one Firefox profile, as most power users do, you’ll have to tune about:config for each profile. In this post, I’ll show you how to do it system-wide, and it’s guaranteed to work.

    With the default setting, Firefox will download and install the update in the background, and then throw up the prompt shown here when you want to open a new tab or window. That means you won’t be able to open that new tab or window until you agree to restart Firefox. And that almost always happens when I’m in the middle of doing something very important and not ready to restart Firefox.

  • How to Use lshw in Linux (With a Practical Example) – CloudSavvy IT

    What if there was a command which would let you, in an easy-to-read format, view all of the hardware in your Linux system? Welcome to lshw, the great tool often overlooked even by seasoned Linux professionals.

  • How to Set Hostname in Docker Compose

    Wondering how to set hostname in Docker Compose? I'll show you that.

  • How to Index Your Docker Image’s Dependencies With Syft – CloudSavvy IT

    Syft is a CLI utility that generates a Software Bill of Materials (SBOM) for container images. An SBOM is a catalogue of dependencies used by your image. It gives you visibility into the “materials” that form your image’s filesystem.

    Producing an SBOM can help you identify overly complex package supply chains that put you at risk of dependency confusion attacks. Distributing an SBOM alongside your image informs users of what lies below the surface. This provides a useful starting point when tightening supply chain security.

    Syft is developed by Anchore which also offers a complete container scanning engine. The Syft CLI is capable of extracting package lists from images using popular operating systems and programming languages. Both Docker and OCI images are supported.

  • How to Mount or Symlink a Single File in a Docker Container – CloudSavvy IT

    Docker volume and bind mounts are used to bind directories on the host OS to locations in the container’s file system. While they’re commonly used to mount entire directories, you can also use them to symlink individual files.

  • How (and Why) to Run Docker Inside Docker – CloudSavvy IT

    Running Docker inside Docker lets you build images and start containers within an already containerized environment. There are two possible approaches to achieve this depending on whether you want to start child or sibling containers.

    Access to Docker from inside a Docker container is most often desirable in the context of CI and CD systems. It’s common to host the agents that run your pipeline inside a Docker container. You’ll end up using a Docker-in-Docker strategy if one of your pipeline stages then builds an image or interacts with containers.

More in Tux Machines

Okular PDF digital signature improvements coming "soon" thanks to NLnet

Starting on January I will be working on a project named "Improve Okular digital signature support" that has received a grant from the NLnet foundation as part of the NGI Assure fund. This will allow me to work part time on Okular (in case it's not clear I work on Okular on a "when I have time-hobby" basis right now), the planned improvements are: 1. Support for signing unsigned signatures. I know it sounds confusing, think about it like something like the old "sign here" boxes on printed paper forms. Read more

FPGA SoC modules gain networking carrier and new PolarFire SoC model

Enclustra’s “Mercury+ PE3” carrier for its FPGA/SoC Mercury/Mercury+ modules can act as an SBC or plug into a PC via PCIe x8. It offers QSFP+, 4x SFP+, FireFly, and 2x GbE. We also examine a new “Mercury+ MP1” module based on the RISC-V based PolarFire SoC. In May, Switzerland based Enclustra announced a Mercury+ ST1 baseboard for its FPGA/SoC powered Mercury and Mercury+ compute modules. These include a Xilinx Zynq UltraScale+ MPSoC based Mercury+ XU6 module that was announced at the same time. Now the company has unveiled a more feature-rich Mercury+ PE3 board for the Mercury/Mercury+ product line. Farther below, we report on a similarly “in development” Mercury+ MP1 module based on Microchip’s based PolarFire SoC, which includes RISC-V based CPU cores and Microchip’s PolarFire FPGA. Read more

IBM/Red Hat/Fedora Leftovers

  • IBM applauds Knative’s application to join the Cloud Native Computing Foundation

    Today, Knative applied to become an incubating project at the Cloud Native Computing Foundation. Today’s news is a major step in the right direction for the future of Knative. Knative adds the necessary components that enable Kubernetes users to more quickly deploy and manage their workloads on Kubernetes — but without the need to become Kubernetes experts. Additionally, Knative adds “serverless” runtime semantics, allowing users to reap the benefit of features such as quick load-based scaling and scaling to zero when idle.

  • 3 ways to optimize Ansible Automation Platform for scale and performance | Enable Sysadmin

    Try these settings to optimize performance with Ansible Automation Platform on a massive scale.

  • Introduction to Ansible prompts and runtime variables

    This tutorial is part of a series we dedicated to Ansible. Previously we talked about the Ansible basics, then we focused on some Ansible modules we can use to perform some very common administration tasks, and we also talked about Ansible loops. In this article, instead, we learn how to create interactive prompts we can use to ask for user input and how to pass variables at runtime.

  • MIXAL on Fedora | Adam Young’s Web Log

    The examples in The Art of Computer Programming (TAOCP) are in the MIXAL programming language. In order to see these examples run, I want to install the tools on my Fedora box. They are packaged as RPMS, so this is trivial. Here are the steps to run and debug a sample program in MIXAL.

  • Fedora Contributor Annual Survey Data Set Available – Fedora Community Blog

    Over the summer of 2021, the Fedora Council held the first annual Contributor Survey. The survey received 800 complete responses, which exceeded the goal of 500. We have processed the data, which are available for download. Coordination of the survey was a wonderful community effort. Fedora Council member Aleksandra Fedorova proposed and led the survey effort with support from Marie Nordin (FCAIC). Many teams across the Fedora Project contributed, including: the Mindshare Committee, the Outreach Revamp Team, the Design Team, the Websites & Apps Team, and the Community Platform Engineering Team. Aleksandra and Marie presented a session at Nest with Fedora which goes further into the process and outcomes. Over the last couple months, the work of cleaning up the dataset has been underway. This has been a slow process as there are just a couple of people working on that regularly. An example of “cleaning” would be folks who chose “Other”, filled in “idk”, when the option “I don’t know” existed. Those answers need to be integrated in order to have a more accurate dataset. We removed fill-in answers due to the fact that some people identified themselves, intentionally or not. As we process the data, we are noting feedback to improve the survey for 2022.

WordPress 5.9 Beta 1

WordPress 5.9 Beta 1 is now available for testing! This version of the WordPress software is under development. You don’t want to run this version on a production site. Instead, it is recommended that you run this on a test site. This will allow you to test out the new version. Read more Also: People of WordPress: Devin Maeztri