Blog Section
Cable installation and patch panel wiring in the server room In this article, I'm sharing my experience in organizing a server room with 14 patch panels. Below are many photographs. General information about the project and server room Our company DATANETWORKS won a tender to build the structured cabling system in a new three-story office building. The network includes 321 ports and 14 patch panels. Minimum requirements for […]
TL;DR: This article describes a convenient, fast, and reliable method for identifying Linux programs that write data to the disk, which helps in detecting high or abnormally frequent loads on the disk subsystem, as well as assessing the overhead of the file system. This is especially relevant for SSDs in PCs, EMMC, and Flash memory in single-board computers. During the writing of this article, it was discovered that writing […]
Mayan writing was the only full writing system in the Americas, but thanks to the efforts of brave Spanish conquistadors, it was completely forgotten by the 17th century. Nevertheless, thousands of these symbols have survived on carved stones, frescoes, and ceramics, and in the 20th century, an ordinary Soviet graduate student proposed an idea that allowed them to be deciphered. This article will show how this […]
The article's title sounds like an epic fail, but in reality, it's not that straightforward. Overall, this story ended quite positively, albeit not at Google. But that's a topic for another article. In this article, I will discuss three things: how my preparation process went, how […]
The release of CoreBoot 4.11 has been published, which develops a free alternative to proprietary firmware and BIOS. A total of 130 developers have contributed to this new version, preparing 1,630 changes. Major updates include: Support for 25 motherboards added: AMD PADMELON; ASUS P5QL-EM; QEMU-AARCH64 (emulation); Google AKEMI, ARCADA CML, DAMU, DOOD, DRALLION, DRATINI, JACUZZI, JUNIPER, KAKADU, KAPPA, PUFF, SARIEN CML, […]
The release of the main branch of nginx 1.17.6 has been formed, where the development of new features continues (in the concurrently maintained stable branch 1.16, only changes related to fixing serious bugs and vulnerabilities are made). Major changes: New variables $proxy_protocol_server_addr and $proxy_protocol_server_port have been added, which contain the address and port of the server received from the PROXY protocol header; The directive limit_conn_dry_run has been added, which switches the ngx_http_limit_conn_module to […]
We regularly encounter the Apache Cassandra database and the need to operate it within a Kubernetes-based infrastructure. In this material, we share our vision of the necessary steps, criteria, and existing solutions (including a review of operators) for migrating Cassandra to K8s. "Who can manage a woman, can handle a state." So, who is Cassandra? It is a distributed storage system designed for […]
A brief digression: for those who want to take the time to understand why I decided to redo it, please see /cut. This article isn't about how I regretted not spending 1000 rubles on a router with USB support, but about the real problem with our only local internet provider, which refuses to work properly yet is eager to collect payments and […]
The new release of QuiteRSS 0.19 has been introduced, a program for reading news feeds in RSS and Atom formats. QuiteRSS features an integrated browser based on the WebKit engine, a flexible filter system, support for tags and categories, multiple viewing modes, an ad blocker, a file download manager, and import/export in OPML format. The project's code is available under the GPLv3 license. The release is timed to […]
Beginning November 22, Intel will start removing very old versions of BIOS and drivers from its website. This concerns solutions that are approximately 20 years old. The leading chipmaker has not specified which products will be affected, but it is evident that this relates to older Pentium and Celeron processors. There is some additional information about mirrors for drivers on Reddit, and […]
The topic mentioned in the title may seem outdated for esteemed Habr readers, but sometimes it simply needs to be addressed. The fact is that I have been working for many years as an admin in a research institute focused on the humanities, where employees possess such qualifications in modern information technologies that the proverbial accounting department in IT jokes seems like a gathering of philosophers discussing […]
SMS messages are the most popular method for two-factor authentication (2FA). They are used by banks, electronic and crypto-wallets, email services, and various other platforms; the number of users employing this method approaches 100%. This situation frustrates me, as this method is not safe. Porting a number from one SIM card to another began in the early mobile era — this is how numbers are restored when a SIM card is lost. […]
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