Category: Administration

CI/CD Guide in GitLab for (Almost) Absolute Beginners

Or how to get beautiful badges for your project in a relaxing evening of coding. Every developer with at least one pet project probably experiences the itch for beautiful badges displaying statuses, code coverage, and package versions in NuGet at some point. This itch led me to write this article. In the process of preparing for it, I […]

WAL-G: new capabilities and community expansion. Georgiy Rylov

I invite you to review the transcript of Georgy Rylov's report from early 2020, "WAL-G: New Opportunities and Community Expansion." Maintainers of open-source projects face numerous challenges as they grow. How to write an increasing number of required features, fix more issues, and keep up with more pull requests? Using WAL-G (a backup tool for PostgreSQL) as an example, I will discuss how we addressed these […]

Using Storage Systems in Working with Media Content

It is hard to imagine the modern world without an abundance of media content, which also includes audio and video data. Just a short while ago, a collection of MP3 files was the dream. Today, 4K video files are seen as something commonplace. All this media content needs to be created, hosted somewhere, and then made accessible. […]

Backup: where, how and why?

Data protection involves having backups — copies from which recovery can be performed. For most companies and organizations, data backup is among the highest priorities. About half of companies treat their data as a strategic asset. The value of stored data is continually increasing. It is used to enhance customer service quality, support ongoing operations, […]

Zabbix 5.0, or What’s New Awaiting Us with the Template Server by IPMI

You need to monitor equipment, but your favorite system, Zabbix, doesn’t have a template ready for this type of equipment. Sound familiar? Everyone has their own way of dealing with it. One administrator searches the internet for a solution. Another develops their own. And some just give up on the task. Currently, the Zabbix team expands the set of pre-installed templates with each new release. […]

Industrial Approach to Tuning PostgreSQL: Experiments with Databases. Nikolai Samokhvalov

I suggest you take a look at the transcript of Nikolai Samokhvalov's report "An Industrial Approach to Tuning PostgreSQL: Experiments with Databases". Is Shared_buffers = 25% a lot or a little? Or just right? How to determine whether this rather outdated recommendation fits your particular case? It’s time to approach the question of tuning parameters in postgresql.conf "like an adult". Not blindly […]

Exploring the VoIP engine Mediastreamer2. Part 9

The material for this article is taken from my Zen channel. Duplex Intercom Device In the previous article, a duplex intercom device was announced, and in this one, we will build it. The schematic is displayed in the title image. The lower filter circuit forms the transmitting path, which begins with the sound card. It outputs signal samples from the microphone. By default, this occurs at a rate of 8000 samples per second. […]

DevOps tools are not just for DevOps. The process of building test automation infrastructure from scratch

Part 1: Web / Android Note: This article is a translation into English of the original article "DevOps tools are not only for DevOps. Building test automation infrastructure from scratch". However, all illustrations, links, quotes, and terms are retained in the original language to avoid distorting the meaning when translated into English. I hope you enjoy your studies! Currently, the specialty […]

Remote access to VMs with GPU using Citrix

This guide details the steps necessary to prepare remote access to virtual desktops using the technology provided by Citrix. It will be useful for those who are newly acquainted with desktop virtualization technology, as it serves as a collection of useful commands compiled from about ten manuals, many of which are available on the websites of Citrix, Nvidia, Microsoft, […]

HiDC solution for building a modern ICT infrastructure for data centers based on Huawei Enterprise equipment

After taking a bird's-eye view of all the modern solutions presented by Huawei Enterprise in 2020, we move on to more focused and detailed discussions of specific ideas and products that can serve as the foundation for the digital transformation of both large enterprises and government entities. Today, we'll explore the concepts and technologies on which Huawei recommends building data centers. […]

Convenient BDD: SpecFlow+TFS

There are many articles online about how to use SpecFlow, how to set up TFS for running tests, but there isn't a single one that covers all aspects. In this article, I will explain how to make the launch and editing of SpecFlow scenarios convenient for everyone. Below, you will find out how to achieve: Running tests from TFS Automatic linking of scenarios […]

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