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today's howtos

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HowTos
  • Renaming and reshaping Scylla tables using scylla-migrator

    We have recently faced a problem where some of the first Scylla tables we created on our main production cluster were not in line any more with the evolved schemas that recent tables are using.

    This typical engineering problem requires either to keep those legacy tables and data queries or to migrate it to the more optimal model with the bandwagon of applications to be modified to query the data the new way… That’s something nobody likes doing but hey, we don’t like legacy at Numberly so let’s kill that one!

    To overcome this challenge we used the scylla-migrator project and I thought it could be useful to share this experience.

  • How to manage users in linux - The Linux Juggernaut

    User management on Linux can be done in three complementary ways. You can use the graphical tools provided by your distribution. These tools have a look and feel that depends on the distribution. If you are a novice Linux user on your home system, then use the graphical tool that is provided by your distribution. This will make sure that you do not run into problems.

    Another option is to use command line tools like useradd, usermod, gpasswd, passwd and others. Server administrators are likely to use these tools, since they are familiar and very similar across many different distributions. This guide will focus on these command line tools.

    A third and rather extremist way is to edit the local configuration files directly using vi (or vipw/vigr). Do not attempt this as a novice on production systems!

  • How To Install Django on Debian 10 - idroot

    In this tutorial, we will show you how to install Django on Debian 10. For those of you who didn’t know, Django is the most popular Python web framework designed to help developers build secure, scalable, and maintainable web applications. Django is free and open-source software, fast and stable which allows you to create a complex website with less coding.

    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 Django Web Framework on a Debian 10 (Buster).

  • How to run a program as another user on Linux - The Linux Juggernaut

    The sudo program allows a user to start a program with the credentials of another user. Before this works, the system administrator has to set up the /etc/sudoers file. This can be useful to delegate administrative tasks to another user (without giving the root password). The screenshot below shows the usage of sudo.

    User ‘rd’ received the right to run useradd with the credentials of root. This allows ‘rd’ to create new users on the system without becoming root and without knowing the root password.

  • Terraform with AWS S3 and DynamoDB for Remote State Files

    By default, Terraform state files are generated locally. This is not ideal when you have multiple people working on a project.

  • How to Install PHP 8 on CentOS 7/8
  • Testing xdotool linux tool .

    Xdotool is a free and open source command line tool for simulating mouse clicks and keystrokes.

    You can create beautiful scrips and tools with this command.

  • How to Turn Your Raspberry Pi into a Plex Streaming Media Server | Tom's Hardware

    Now that Ubuntu Desktop is available for Raspberry Pi 4, users no longer need to fiddle with terminal commands to enjoy Plex Media Server on Raspberry Pi. In this article, we will set up Ubuntu Desktop and turn our Raspberry Pi into a streaming media server. We have chosen Plex Media Server since it is available in the Ubuntu Appliance portfolio. Check out our recent article on the Ubuntu Appliance portfolio for Raspberry Pi here.

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.