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Programming: Ansible, GCC, GeoJSON and More

Submitted by Roy Schestowitz on Friday 17th of May 2019 05:08:04 PM Filed under
Development
  • Using Testinfra with Ansible to verify server state

    By design, Ansible expresses the desired state of a machine to ensure that the content of an Ansible playbook or role is deployed to the targeted machines. But what if you need to make sure all the infrastructure changes are in Ansible? Or verify the state of a server at any time?

    Testinfra is an infrastructure testing framework that makes it easy to write unit tests to verify the state of a server. It is a Python library and uses the powerful pytest test engine.

  • GCC 10 Lands Support For Emulating MMX With SSE Instructions

    The GCC 10 code compiler merged support to begin emulating MMX intrinsics using SSE.

    Back in February we wrote about the patches by Intel for implementing MMX intrinsics using SSE instructions. For those still relying upon MMX SIMD instructions, the benefit of implementing it using SSE is that it frees up an 8-byte vectorizer for SSE2 when MMX is disabled. Presumably, future Intel CPUs might end up retiring MMX at long last.

  • Monitoring Earthquakes Curses

    The USGS publishes a plethora of data on their website. Of interest to me are a bunch of frequently updated GeoJSON feeds which can be parsed with standard JSON libraries. I was keen to dabble in a bit of Curses programming (hey - it's a change from HTML & CSS!). So GeoJSONWatcher was born and is at its early v0.1 stage. The app shows when run the latest update and then a running report of the largest quakes measured.

  • 2020 Presidential Tracker now live

    I've revamped it by creating a single score to summarize all the tests - the goal is to have some useful predictivate quality - and be easier to track over time. To predict how prepared they are for a "bump" or their "monent", but also provide an idea of how much outside actors might be able to meddle with their campaign.

  • Tutorial: Text Analysis in Python to Test a Hypothesis

    People often complain about important subjects being covered too little in the news. One such subject is climate change. The scientific consensus is that this is an important problem, and it stands to reason that the more people are aware of it, the better our chances may be of solving it. But how can we assess how widely covered climate change is by various media outlets? We can use Python to do some text analysis!

    Specifically, in this post, we'll try to answer some questions about which news outlets are giving climate change the most coverage. At the same time, we'll learn some of the programming skills required to analyze text data in Python and test a hypothesis related to that data.

  • Python Modules | All You Need To Know
  • Remote Debugging in Python
  • EuroPython 2019: Sponsor brochure available
  • [Fedora] Remi Collet: PHP version 7.2.19RC1 and 7.3.6RC1
»

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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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