today's howtos

posted by Roy Schestowitz on Sep 22, 2022

• Getting Started with Podman: Manage Images, Containers and Volumes

  Podman is a container runtime that provides features similar to Docker. It's part of the libpod library and can be used to manage pods, containers, container images, and container volumes.

• ROS orchestration with snaps | Ubuntu

  Application orchestration is the process of integrating applications together to automate and synchronise processes. In robotics, this is essential, especially on complex systems that involve a lot of different processes working together. But, ROS applications are usually launched all at once from one top-level launch file.

  With orchestration, smaller launch files could be launched and synchronised to start one after the other to make sure everything is in the right state. Orchestration can also hold processes and insert some process logic. This is what ROS orchestration should be about.

  This way, for instance, you could make your localisation node start only once your map_server made the map available.

  Snaps offer orchestration features that might come handy for your ROS orchestration.

  In this post, we will demonstrate how to start a snap automatically at boot and how to monitor it. Then, through some examples, we will explore the different orchestration features that snaps offer. We thus assume that you are familiar with snaps for ROS; if you aren’t, or need a refresher, head over to the documentation page.

• 4 Simple Steps to Clean Your Ubuntu System

  You can try these four simple steps right now to clean up your Ubuntu installation.

  This quick tutorial would help you to clean up old Ubuntu installations and free up some disk space.

  If you have been running an Ubuntu system for more than a year, you might feel that your system is slow and lagging despite your being up-to-date.

  Over time, there are many apps which you might have installed just to experiment or after reading a great review, but you did not remove them. These are some ways to help you find out some hidden disk spaces that you can free up.

• Deploying Angular Apps to a Kubernetes Cluster - Container Journal

  Angular is a component-based framework for building single-page client-side applications. It is based on HTML and TypeScript. Angular is written in TypeScript and provides TypeScript libraries you can import into your applications, with functionality such as routing, form management and client/server communication.

  Web application frameworks like Angular improve development efficiency by providing a consistent structure so that developers do not have to rewrite their code from scratch. A framework also provides useful infrastructure and features that can be added to the software without extra effort. Angular also provides developer tools to support initial development, builds, file uploads, code testing and updates.

  Kubernetes is the world’s most popular container orchestration platform. It is being used to run workloads of all shapes and sizes, and web applications are no exception. Kubernetes can be an excellent option to run large-scale web apps composed of multiple services, potentially with multiple instances for each service. I’ll cover the basics of Angular and show how to use Kubernetes to deploy and scale Angular applications.

• How to Transcode FLAC Files With flac2all in Linux - Make Tech Easier

  flac2all is a simple utility that allows you to convert high-quality FLAC files to almost any modern audio format. Unlike ffmpeg, this utility automates the process of sorting, tagging and encoding your FLAC audio. flac2all is easy to install and use. Learn how to use this highly versatile program that can act as a front end for all your audio transcoding needs.

• How to Fix the Linux Boots Into the BIOS Error

  GRUB updates have been known to result in Linux computers booting into the BIOS or UEFI settings. The fix for this takes advantage of a useful system recovery trick you really ought to know about.

• How To Install Django on Rocky Linux 9 - idroot

  In this tutorial, we will show you how to install Django on Rocky Linux 9. For those of you who didn’t know, Django is a free and open-source web application framework written in Python. It comes with a set of tools to help one build scalable web applications. Django’s primary goals are simplicity, re-usability, rapid development, and scalability.

  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 Django on Rocky Linux. 9.

• How to run a VM headless in QEMU-KVM

  A client asked me to find a way to keep running an ancient system (from 10+ years ago) in a new server. The old binary packages didn’t work. I couldn’t even compile those packages for our linux in the new server. Then I though in create a Virtual Machine. So this is how to run a VM headless in QEMU-KVM-libvirt-etc.

• Upgrading Homelab Kubernetes Cluster from 1.23 to 1.24

  The most time-consuming Kubernetes upgrade to date because of dockershim.