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today's leftovers

Submitted by Roy Schestowitz on Thursday 21st of April 2022 02:50:39 PM Filed under
Misc

  • BigBlueButton: Web conferencing for collaborative learning

    BigBlueButton is an open source web conferencing solution for online learning that provides real-time sharing of audio, video, slides, whiteboard, chat and screen. It also allows participants to join the conferences with their webcams and invite guest speakers.

  • Monitoring My Garage Door With a Raspberry Pi, Rust, and a 13Mb Linux System

    The trouble with using a Raspberry Pi is now I have another computer I have to maintain: apply package updates, upgrade the OS, worry about wearing out the SD card, etc. Raspberry Pi OS was great for getting the project off the ground but I wanted to slim it down so it was running the bare minimum amount of software. I also wanted it to run from RAM so that I didn’t have to worry about the SD card wearing out or file-system corruption from unclean shutdowns.

    The aim was to turn the Pi into a glorified microcontroller that I could feel comfortable running for years without needing to worry about applying updates etc. Yes it’s still possible that there is a vulnerability in the limited amount of software it runs but I feel like I’ve reduced the attack surface enough that I can happily let this thing run and it’ll be fine.

  • Debian/Raspbian rngd with -S0 will bite you after a week

    So, yeah, if you run Debian's rngd with -S0, it'll be perfectly fine for a week or so, and then it'll go into a tight loop that'll tie up one of your CPUs from then until the process is stopped for some reason. Lovely.

    If you've tried running it this way on your Raspberry Pi for similar card-preserving reasons, you might want to go look and see if you have a rngd that's eating a core. If your uptime is more than a week, I bet it is.

    Sheesh.

  • Some bits on keeping isolated network interfaces organized (on Linux)

    My Fedora office workstation has wound up with a complicated network setup and to go with it, a complicated set of policy based IP routing rules that are intended to create interfaces with dual identity routing and isolation (see also). Right now, my workstation is on two public networks and a shifting number of internal "sandbox" RFC 1918 networks that are behind firewalls, serves as the Wireguard endpoint for my home machine's connection, and now has a NAT'd virtual network for virtual machines. The result of this accreting complexity is that I spent a bunch of today fighting with my policy based routing rules. So now I have some thoughts on keeping things straight here.

  • Ordering CSS Declarations

    What experience leads Eric to make this recommendation?

»

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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.

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