Administration Section
Note from the translator: The author of the original article is Théo Chamley, a cloud solutions architect at Google. In this blog post for Google Cloud, he presented a brief summary of a more detailed guide from his company titled 'Best Practices for Operating Containers.' In it, Google experts compiled the best practices for operating containers in the context of using Google Kubernetes Engine and beyond, addressing […]
What corporate software is installed in your company? CRM, project management system, helpdesk, ITSM system, 1C (did we guess right)? Do you have a clear sense that all these programs duplicate each other? In fact, overlaps in functions do occur; many issues can be resolved with a universal automation system — we advocate this approach. However, there are departments or groups of employees where […]
If your company transmits or receives personal data and other confidential information that must be protected according to legislation, GOST encryption is required. Today, we will share how such encryption was implemented using the S-Terra crypto gateway for one of our clients. This story will be interesting to information security specialists, engineers, designers, and architects. We will not delve deeply into the nuances […]
The relevance of blocking access to prohibited resources concerns any admin who may officially be accused of failing to comply with laws or orders from relevant authorities. Why reinvent the wheel when there are specialized programs and distributions for our tasks, such as: Zeroshell, pfSense, ClearOS. Another question arose from management: Does the product we use have a security certificate from our country? We had experience […]
Hello, Habr! I had an idea to connect my Raspberry Pi to the internet wirelessly. Said and done, I purchased a USB Wi-Fi dongle from the well-known brand TP-Link at a nearby store. I want to clarify that this is not some tiny USB module; it is a fairly sizeable device about the size of a regular flash drive (or if you prefer, about the size of an adult's index finger […]
The Operations Director of the portal Banki.ru, Andrey Nikolsky, spoke at last year's DevOpsDays Moscow conference about orphan services: how to identify orphans in the infrastructure, the issues with orphan services, what to do with them, and how to cope when nothing helps. Below is the text version of the report. Hello, colleagues! My name is Andrey, I lead the operations at Banki.ru. We have large services, […]
Information about what KDB+ is, the Q programming language, and their strengths and weaknesses can be found in my previous article and briefly in the introduction. In this article, we will implement a service in Q that will process incoming data streams and compute various aggregate functions in a 'real-time' mode (i.e., it will be able to handle all […]
Note from the translator: Lead engineer at Zalando, Henning Jacobs, has repeatedly noticed that Kubernetes users struggle to understand the purpose of liveness and readiness probes, as well as their proper application. Hence, he gathered his thoughts in this concise note, which will eventually become part of the K8s documentation. Health checks, known in Kubernetes as liveness probes (i.e., literally, […]
This is a fairly common myth in the server hardware industry. In practice, hyper-converged solutions (where everything is in one) are needed for many purposes. Historically, the first architectures were developed by Amazon and Google for their services. The idea at that time was to create a computing farm consisting of identical nodes, each with its own disks. All of this […]
Last week we released 3CX v16 Update 3 and a new application (mobile softphone) 3CX for Android. The softphone is intended to work only with 3CX v16 Update 3 and above. Many users have had additional questions about the application's operation. In this article, we will answer them and provide more details about the new features of the application. It works […]
Zabbix is a monitoring system. Like any other system, it faces three main issues common to all monitoring systems: data collection and processing, historical data storage, and its cleanup. The stages of data retrieval, processing, and recording take time. A little, but for a large system, this can lead to significant delays. The storage issue is a matter of access to the data. They […]
This article will reveal some non-obvious aspects related to the use of wildcards when copying, the ambiguous behavior of the cp command during copy operations, as well as methods to correctly copy a large number of files without misses and crashes. Suppose we need to copy everything from the /source folder to the /target folder. The first thing that comes to mind is: cp /source/* /target Let's fix […]