This post outlines the steps for automating SSL certificate management from Let's Encrypt CA using the DNS-01 challenge and AWS. acme-dns-route53 is a tool that will allow us to implement this feature. It can work with SSL certificates from Let's Encrypt, store them in Amazon Certificate Manager, use Route53 API to implement the DNS-01 challenge, and, finally, push notifications to […]
Good day, esteemed Habr users and portal guests! Recently, I had the need to set up a small server for video conferencing. There weren't many options considered — BBB and Openmeetings, as only they met the functional requirements: Free desktop and document sharing, etc. Interactive work with users (shared whiteboard, chat, etc.) No additional software installation required […]
Modern data centers are reliable; however, any equipment can break down from time to time. In this brief note, we have compiled the most significant incidents of 2018. The impact of digital technologies on the economy is growing, the volumes of processed information are increasing, new facilities are being built, and this is good as long as everything works. Unfortunately, the impact of data center failures on the economy has also been increasing since people started […]
People around the world use commercial proxies to hide their true location or identity. This can be done for various tasks, including accessing blocked information or ensuring privacy. But how accurate are the providers of such proxies when they claim their servers are located in a specific country? This is a crucial question, the answer to which lies in […]
The quality of a wireless network is inherently included in the concept of service level. And if you want to meet the high demands of customers, you need not only to quickly address emerging network issues but also to anticipate the most common ones. How to achieve this? Only by tracking what is truly important in this context — user interaction with the wireless network. Network loads continue to […]
Intel has published information about a new class of vulnerabilities in its processors — MDS (Microarchitectural Data Sampling). Like previous Spectre-class attacks, these new issues can lead to the leakage of sensitive data from the operating system, virtual machines, and foreign processes. It is claimed that the problems were first identified by Intel employees and partners during an internal audit, after which the information was provided […]
Hello everyone! My name is Pavel Agaletsky. I work as a team lead in the group developing the Lamoda delivery system. In 2018, I spoke at the HighLoad++ conference, and today I want to present a transcription of my report. My topic focuses on our company's experience in deploying systems and services to different environments. Starting from our prehistoric times, when we deployed all systems […]
My name is Dmitry, and I work as a tester at MEL Science. I recently finished exploring a relatively new feature from Firebase Test Lab — specifically, instrumental testing of iOS applications using the native testing framework XCUITest. Before this, I had already tried Firebase Test Lab for Android, and I liked it very much, so I […]
The organizing committee of the Second Independent Award for Russian-speaking freelancers has announced the start of applications for the 'Golden Spear 2019' award. The term 'freelancer' encompasses self-employed specialists from various professions: designers and illustrators, web programmers and app developers, copywriters and translators, content managers and optimizers, directors and SMM specialists, photographers and motion designers, among many others. Freelancers are distinguished by their independence, responsibility and […]
Under the cut is the translation of the published FAQ regarding details about the upcoming version 2 of WSL (author — Craig Loewen). The questions covered include: Does WSL 2 use Hyper-V? Will WSL 2 be available on Windows 10 Home? What will happen with WSL 1? Will it be deprecated? Will it be possible to run WSL 2 and other third-party virtualization tools (for example, VMWare or Virtual […]
Unlike the common "client-server" architecture, decentralized applications are characterized by: The absence of a need to store a database with user logins and passwords. Access information is stored solely by the users themselves, with their authenticity being verified at the protocol level. The absence of a need to use a server. The application logic can run in a blockchain network, where it is also possible to store the necessary amount of data. There are 2 […]
U-Play Online Studio has announced the development of a simulator for managing an esports team called Esports Life Tycoon. 'Very soon,' publisher Raiser Games will release the game in early access on Steam. 'The crowd is so excited that it's almost impossible to make out what your players are saying to each other,' the developers share. 'You are so close to becoming winners at one of the most important […]