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today's howtos

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  • Playbooks, host vars, group vars

    This is part of a series of posts on ideas for an ansible-like provisioning system, implemented in Transilience.

  • Systemd Timers for Scheduling Tasks - Fedora Magazine

    Cron can schedule a task to be run at a granularity ranging from minutes to months or more. It is relatively simple to set up, requiring a single configuration file. Although the configuration line is somewhat esoteric. It can also be used by general users.

    Cron, however, fails if your system happens to not be running when the appropriate execution time occurs.

    Anacron, overcomes the “system not running” issue. It insures that the task will be executed when your system is again active. While it was intended to be used by administrators, some systems give general users access.

    However, the anacron frequency of execution can be no less than daily.

    Both cron and anacron have issues with consistency in execution context. Care must be taken that the environment in effect when the task runs is exactly that used when testing. The same shell, environment variables and paths must be provided. This means that testing and debugging can sometimes be difficult.

    Systemd timers offer the best of both cron and anacron. Allows scheduling down to minute granularity. Assures that the task will be executed when the system is again running even if it was off during the expected execution time. Is available to all users. You can test and debug the execution in the environment it will run in.

    However, the configuration is more involved, requiring at least two configuration files.

    If your cron and anacron configuration is serving you well then there may not be a reason to change. But systemd is at least worth investigating since it may simplify any current cron /anacron work-arounds.

  • How to play Just Cause 3 on Linux

    Just Cause 3 is a 2015 action-adventure game developed by Avalance Studios and published by Square Enix. In this game, the player controls Rico Rodriguez as he returns to his homeland of Medici. Here’s how to play it on Linux.

  • How to Install Windows After Ubuntu Linux in Dual Boot

    When it comes to dual boot, the general idea is that you have a system preinstalled with Windows and then you install Linux alongside Windows. On the boot, you select whether you want to use Windows or Linux.

    How about the opposite situation? What if you have a system that has only Linux installed on it and you want to install Windows alongside Linux in dual boot mode?

    In this tutorial, I’ll show you exactly how you can install Windows after Ubuntu Linux in dual boot.

  • How to Install The Latest Sigil EPUB Ebook Editor 6.0 in Ubuntu 20.04, 21.04 | UbuntuHandbook

    For those sticking to the latest Sigil ebook editor, here’s Ubuntu PPA maintains the 6.0 release packages for Ubuntu 18.04, Ubuntu 20.04, Ubuntu 21.04, Linux Mint 19 & 20.

    Sigil is a free and open-source ebook editor designed to edit books in ePub format (both ePub 2 and ePub 3). The software offers official binary packages only for Windows and Mac OS.

    The editor in Ubuntu repositories is always old. And no Flatpak or Snap package for Sigil. So far, using a third-party PPA is the only way besides compiling from the source tarball.

  • MySQL Security Tips » ADMIN Magazine

    MySQL security configurations include a range of topics, along with their possible effects on MySQL servers and corresponding applications. In this article, I look at MySQL security encryption services, account-associated authorization systems, and other required security precautions to ensure protection against misuse and attacks. This security guide will help you protect sensitive data, even if the MySQL service is compromised at some point.

    Most of the advanced MySQL security configurations require changes to the server's main configuration file my.cnf. This file is generally located inside the /etc/mysql directory or in the /opt/lampp/etc/ folder for LAMPP installations. However, you can locate the file with the find or locate command in Linux.

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.