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Programming: Python Leftovers and More

Submitted by Roy Schestowitz on Wednesday 3rd of April 2019 03:54:15 PM Filed under
Development
  • Top 5 Python Frameworks For Test Automation In 2019
  • Coding in Python 25 - Classes
  • Coding in Python 26 - Inheritance
  • How to Execute Mars in a Distributed Manner

    Mars provides a library for distributed execution of tensors. The library is written using the actor model implemented by mars.actors and includes schedulers, workers and web services.

    The graph submitted by the client to Mars Web Service consists of tensors. The web service receives the graphs and submits them to a scheduler. Before submitting the job to each worker, a Mars scheduler compiles the tensor graph into a graph composed of chunks and operands, and then analyzes and splits the graph. Then, the scheduler creates a series of OperandActors that control the execution of a single operand in all schedulers based on the consistent hash. Operands are scheduled in a topological order. Once all operands have been executed, the entire figure is marked as completed, and the client can pull the results from the Web. The entire execution process is shown in the following figure.

  • 8 principles to achieve DevOps at scale

    Since you clicked on this article, you may be wondering why you aren't achieving the level of quality, efficiency, and satisfaction you expect from your DevOps processes. Maybe you think other organizations are achieving more than you are. If so, you might be trying to do what everyone else is doing, rather than thinking independently and building a DevOps initiative that fits your organization.

  • Speed up SystemTap script monitoring of system calls

    SystemTap has extensive libraries called tapsets that allow developers to instrument various aspects of the kernel’s operation. SystemTap allows the use of wildcards to instrument multiple locations in particular subsystems. SystemTap has to perform a significant amount of work to create instrumentation for each of the places being probed. This overhead is particularly apparent when using the wildcards for the system call tapset that contains hundreds of entries (syscall.* and syscall.*.return). For some subsets of data collection, replacing the wildcard-matched syscall probes in SystemTap scripts with the kernel.trace("sys_enter") and the kernel.trace("sys_exit") probe will produce smaller instrumentation modules that compile and start up more quickly. In this article, I’ll show a few examples of how this works.

  • GDB autoloads for 389 DS

    I’ve been writing a set of extensions to help debug 389-ds a bit easier. Thanks to the magic of python, writing GDB extensions is really easy.

    On OpenSUSE, when you start your DS instance under GDB, all of the extensions are automatically loaded. This will help make debugging a breeze.

»

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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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