Category: Administration

Running Apache Spark on Kubernetes

Dear readers, good day. Today we will briefly discuss Apache Spark and its development prospects. In the modern world of Big Data, Apache Spark is the de facto standard for developing batch data processing tasks. Additionally, it is used to create streaming applications that operate on the micro-batch concept, processing and delivering data in small portions (Spark Structured Streaming). And […]

Running Keycloak in HA mode on Kubernetes

TL;DR: this will be a description of Keycloak, an open-source access control system, an analysis of its internal structure, and setup details. Introduction and Key Concepts In this article, we will explore the key concepts to remember when deploying a Keycloak cluster on top of Kubernetes. If you wish to know more about Keycloak, refer to the links at the end of the article. To dive deeper […]

Open-source cloud gaming on WebRTC: p2p, multiplayer, zero latency

Software as a Service, Infrastructure as a Service, Platform as a Service, Communication Platform as a Service, Video Conferencing as a Service, but what about Cloud Gaming as a Service? Several attempts have been made to create Cloud Gaming, such as Stadia, recently launched by Google. Stadia is no stranger to WebRTC, but can others leverage WebRTC the same way? Thanh Nguyen […]

How to host a static website using Yandex.Cloud Object Storage

Hello, Habr! In this article, I will explain how to easily and simply host a static website using Yandex technologies, specifically Object Storage. By the end, you will have a live website available via an external link. This article will be useful if you are a beginner developer just learning programming; a developer who has created a portfolio and wants […]

How to access Beeline IPVPN through IPSec. Part 1

Hello! In the previous post, I described how our MultiSIM service operates regarding channel reservation and balancing. As mentioned, we connect clients to the network via VPN, and today I will share a bit more about VPN and our capabilities in this area. It’s worth noting that as a telecom operator, we have our own vast MPLS network, […]

Error Tracking in React Applications with Sentry

Today I will tell you about real-time error tracking in a React application. The frontend application is generally not used for error tracking. Some companies often postpone error tracking, returning to it after documentation, tests, and so forth. However, if you can improve your product, then just do it! 1. Why do you need Sentry? […]

Cool URIs do not change

Author — Sir Tim Berners-Lee, inventor of URI, URL, HTTP, HTML, and the World Wide Web, current head of W3C. The article was written in 1998. What URI can be considered 'cool'? One that does not change. How are URIs changed? URIs do not change: people change them. Ideally, people have no reason to change URIs (or stop supporting documents), but in practice […]

Citizenship by Investment: How to Buy a Passport? (Part 2 of 3)

As economic citizenship becomes increasingly popular, new players are entering the golden passport market. This stimulates competition and expands the options available. What can you choose from right now? Let's take a closer look. This is the second part of a three-part series created as a comprehensive guide for Russians, Belarusians, and Ukrainians who wish to obtain economic citizenship. The first part, […]

Citizenship by investment: how to buy a passport? (part 1 of 3)

There are many ways to obtain a second passport. If you need the fastest and simplest option, consider citizenship by investment. This three-part article series serves as a complete guide for Russians, Belarusians, and Ukrainians who wish to obtain economic citizenship. It helps you understand what citizenship by investment is, what it offers, where, and how […]

The Raspberry Pi Foundation has hosted its website on Raspberry Pi 4. This hosting is now available to everyone.

The Raspberry Pi was created for learning and experimentation. However, since 2012, this 'little berry' has become much more powerful and functional. The board is used not only for education but also for creating desktop PCs, media centers, smart TVs, players, retro consoles, private clouds, and other purposes. New cases have emerged, not only from third-party developers but also from the developers themselves […]

xtables-addons: filtering packets by country.

The task of blocking traffic from certain countries seems straightforward, but first impressions can be deceiving. Today, we will discuss how this can be implemented. Background The search results on Google for this topic are disappointing: most solutions are outdated, and it sometimes feels like this topic has been shelved and forgotten. We have 'scoured' many old posts and are ready to share […]

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