Sometimes, you need to obtain a full copy of a volume within a single storage system (SAN), not a snapshot, but a complete volume. However, not all SANs allow this to be done using their own tools. It seems that the only option is to copy through the server, but in this case, the entire volume of data will be routed through the server itself, the network to the SAN, and the SAN ports, […]
LOST by sophiagworld This article compiles some general templates that help engineers work with large-scale services that are queried by millions of users. Based on the author's experience, this is not an exhaustive list, but truly effective advice. So, let's get started. Translated with the support of Mail.ru Cloud Solutions. Beginner Level The measures listed below are relatively easy to implement, but provide high returns. If […]
Daria Vilkova's report for Zabbix Meetup Online I want to introduce you to the monitoring tool for PostgreSQL and the operating system that our company is developing using Zabbix. We chose Zabbix as our monitoring tool a long time ago because it's an open-source platform supported by an active community and is quite popular in Russia. We created an active agent […]
Hello, LOR! Mesosphere is an open version of the Horizon operating system kernel for the Nintendo Switch gaming console, compatible with the original. The development is being handled by the creator of the custom firmware Atmosphere and a team of developers. Currently, the kernel loads and operates on the console, and games are functioning as well. However, there are still many bugs and missing features. The source code is published under […]
Co-founder and CEO of Paragon Software Group, Konstantin Komarov, published a patch in the Linux-Fsdevel mailing list implementing the NTFS filesystem driver, supporting all major operations — reading, writing, working with sparse and packed files, extended attributes, and data recovery and filesystem journaling. The code is provided under the GPL license and meets all basic patch acceptance requirements […]
TL;DR: I'm setting up Wireguard on a VPS, connecting to it from my home router on OpenWRT, and gaining access to my home subnet from my phone. If you have a personal infrastructure on your home server or multiple IP-managed devices at home, you certainly want to access them from work, on the bus, train, or metro. More often […]
In brief, MTA-STS is a way to further secure emails against interception (i.e., man-in-the-middle attacks aka MitM) during transmission between mail servers. It partially addresses inherited architectural issues of email protocols and is described in a relatively recent standard RFC 8461. Mail.ru is the first major mail service in RuNet to implement this standard. A more detailed discussion can be found […]
Guardicore, a company specializing in data center and cloud system protection, has identified a new high-tech malware called FritzFrog, which targets Linux-based servers. FritzFrog combines a worm that spreads through a brute-force attack on servers with an open SSH port, and components for building a decentralized botnet that operates without control nodes and has no single point of failure. A proprietary […]
On August 10, a video course on Docker started at Slurm, where we cover it in full — from basic abstractions to network parameters. In this article, we will discuss the history of Docker's emergence and its main abstractions: Image, CLI, Dockerfile. This lecture is aimed at beginners, so it is unlikely to be of interest to experienced users. There will be no blood, appendix, or deep dives. […]
Hello, Habr! Right now, OTUS is accepting applications for a new batch of the 'Data Engineer' course. In anticipation of the course launch, we continue to share useful material with you. Read the first part on Data Management Strong Data Governance – the core principle of Twitter Engineering. As we implement BigQuery into our platform, we focus on data discovery, access control, and security […]
An update for the Solaris 11.4 operating system, SRU 24 (Support Repository Update), has been released, featuring a series of corrections and improvements for the Solaris 11.4 branch. To install the proposed fixes in the update, simply execute the command 'pkg update'. The new release includes: An updated Oracle Explorer to version 20.2, a toolkit for building detailed configuration and system status profiles; Added support for storage […]
Corrective releases of the Icinga Web 2.6.4, 2.7.4, and v2.8.2 packages, which provide a web interface for the Icinga monitoring system, have been published. The proposed updates address a critical vulnerability (CVE-2020-24368), allowing an unauthenticated attacker to access files on the server with the privileges of the Icinga Web process (typically the user under which the HTTP server or FPM runs). A successful attack requires one of the third-party modules supplied […]
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