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Ansible: Migration of configuration for 120 VMs from CoreOS to CentOS over 18 months

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This is the transcript of the presentation at DevopsConf 2019-10-01 and SPbLUG 2019-09-25. It tells the story of a project that used a custom configuration management system and why the migration to Ansible took 18 months. Day No -XXX: Before the beginning Initially, the infrastructure consisted of several standalone hosts managed by Hyper-V. Creating a virtual machine required numerous steps: putting the disks in the right […]

Data Management Platforms: From Edge to Cloud

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Today, for most companies and organizations, data is one of their strategic assets. With the expansion of analytics capabilities, the value of the data collected and accumulated by companies is continually increasing. There is often talk of the explosive, exponential growth of the volumes of corporate data generated. It is noted that 90% of all data has been created in the last two years. The growth of data volumes is accompanied by an increase in their […]

Exploitation of LineageOS infrastructure through a vulnerability in SaltStack

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The developers of the mobile platform LineageOS, which succeeded CyanogenMod, warned of discovering traces of a breach in the project's infrastructure. It was noted that at 6 AM (MSK) on May 3, the attacker managed to gain access to the main server of the centralized configuration management system SaltStack by exploiting an unpatched vulnerability. Currently, the incident is under investigation, and details are not yet available. It is only reported that the attack did not […]

Experiment on the applicability of the graph database JanusGraph for solving the problem of finding suitable paths

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Hello everyone. We are developing a product for analyzing offline traffic. The project includes a task related to the statistical analysis of visitor movement paths across areas. As part of this task, users can query the system in the following ways: how many visitors moved from area 'A' to area 'B'; how many visitors moved from area 'A' to area 'B' through area 'C', and so on.

Storacle — a decentralized file storage

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Before I begin, I need to provide a link to the previous article for context. In this article, I would like to discuss the layer responsible for file storage and how anyone can utilize it. Storacle is an independent library, with no direct connection to music. It allows for the storage of any files. In the previous article, I...

Museria — a decentralized music storage

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I once set out to write an application to curate music for myself to listen to at home, outdoors, during workouts, etc. I wanted it to run seamlessly with minimal interaction from my side. I devised an architecture, sketched a prototype, and ultimately encountered one "minor issue." I was stumped on where to source the actual song files. By that time, VK had already closed its API, and major music...

The Fall Update for Windows 10 20H2 may not be as significant as expected.

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According to online sources, Microsoft plans to release only one major update for Windows 10 this year. It is expected that the spring update of the software platform will be significant and will bring new features, while a less significant update package will be released in the fall. If this is the case, the Windows 20H2 update will be quite similar to Windows 10 […]

NVMe SSDs with Chinese controllers are now available: performance is at a level of

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Since last fall, China has begun producing 'national' 3D NAND flash memory. These are 64-layer chips from the company YMTC. This product immediately attracted the interest of Chinese SSD controller developers. Chinese memory and controllers allow for breaking the monopoly of foreign storage system manufacturers, driven by national security concerns. Recently, one of these products was presented. According to the online resource cnTechPost, the company […]

Release of the integrated internet application suite SeaMonkey 2.53.2

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The release of the SeaMonkey 2.53.2 internet application suite has been published, which combines a web browser, email client, news feed aggregator (RSS/Atom), and WYSIWYG HTML page editor Composer into one product. The pre-installed add-ons include the IRC client Chatzilla, the web development tool DOM Inspector, and the calendar planner Lightning. This new release includes fixes and changes from the current Firefox codebase (SeaMonkey 2.53 […]

New version of the RosBE (ReactOS Build Environment)

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The developers of the ReactOS operating system, aimed at ensuring compatibility with Microsoft Windows programs and drivers, have released a new version of the ReactOS Build Environment (RosBE 2.2), which includes a set of compilers and tools that can be used to build ReactOS on Linux, Windows, and macOS. This release is notable for updating the GCC compiler set to version 8.4.0 (the last 7 years have seen […]

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