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Administration Section

Serverless computing based on OpenWhisk, part 4

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This article concludes the series of translated notes on OpenWhisk by author Priti Desai. Today, we will explore the process of deploying OpenWhisk on top of Kubernetes with corrected commands for compatibility with current application versions. We will also describe the process of launching OpenWhisk functions using Knative and TektonCD in Kubernetes with a Node.js runtime environment. Let's deploy OpenWhisk on Kubernetes. Over the past few days, I […]

WE are not Aihor hosting. Or how to spit in the face of the industry

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Hello, I haven't slept for two days. I am an IT marketer in every sense: an IT specialist who moved into marketing. I have several projects where I help with promotion, including online advertising, SEO, content, etc. And a few of my side projects have been under a copper basin for over 30 hours now. It's a nightmare that has happened in real life. And […]

TP-Link Switch Testing with Long Range PoE. And a bit about upgrading old models

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Previously, in our switches, we developed Power over Ethernet technology solely in the direction of increasing the transmitted power. However, during the operation of PoE and PoE+ solutions, it became apparent that this was not enough. Our clients face not only a lack of energy budget but also the standard limitation of Ethernet networks — a transmission distance of 100 m. In this article […]

Another registrar has handed out the last block of IPv4 addresses

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In 2015, ARIN (responsible for the North American region) became the first registrar to exhaust its pool of IPv4 addresses. In November, RIPE, which allocates resources in Europe and Asia, also ran out of addresses. / Unsplash / David Monje Situation in RIPE In 2012, RIPE announced the start of the distribution of the last /8 block. Since then, every client of the registrar could [...].

Series of posts on Istio Service Mesh

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We are beginning a series of posts in which we will demonstrate some of the many capabilities of the Istio Service Mesh in combination with Red Hat OpenShift and Kubernetes. Part one, today: We will explain the concept of Kubernetes sidecar containers and formulate the leitmotif of this series of posts: "You don't need to change anything in your code." We will present a fundamental aspect of Istio – routing rules. These are built upon [...].

What is the Fresnel zone and CCQ (Client Connection Quality) or fundamental factors of a quality wireless bridge

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Contents CCQ — what is it? Three main factors affecting CCQ quality. Fresnel zone — what is it? How to calculate the Fresnel zone? In this article, I want to discuss the fundamental factors in building a quality wireless bridge, as many 'network builders' believe that it is enough to buy quality networking equipment, install it, and get 100% return from it — which […]

Testing Cheap Virtual Servers

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Many hosting providers offer cheap virtual servers, and recently we've seen a surge in advertised plans with various restrictions (for example, the ability to order one such virtual server per account), with prices sometimes even below the cost of IP addresses. It became interesting to conduct a small test and share the results with the broader public. […]

Testing virtual servers from DigitalOcean, Vultr, Linode, and Hetzner. Human sacrifices: 0.0

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In one of my previous articles, I presented the results of testing cheap virtual servers from various hosting providers in the Runet. Thank you to all the commentators and those who reached out via personal messages for your feedback. This time, I want to present the results of testing virtual servers from well-known and large companies: DigitalOcean, Vultr, Linode, and Hetzner. A total of 38 tests were conducted for all available locations. […]

1. Elastic stack: analyzing security logs. Introduction

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With the cessation of sales of the logging and analytics system Splunk in Russia, the question arose as to what to replace this solution with. After spending time reviewing various options, I settled on a solution for real men—the 'ELK stack.' This system requires time for setup, but it results in a very powerful system for analyzing performance and operations […]

SD-WAN and DNA to assist admins: architectural features and practice

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A stand that you can touch in our lab if you wish. SD-WAN and SD-Access are two different new proprietary approaches to building networks. In the future, they are expected to merge into a single overlay network, but for now, they are just coming closer. The logic is this: take a network from the 1990s and layer on all the necessary patches and features without waiting for this to happen […]

ICANN has suspended the sale of the .ORG domain zone

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The ICANN Corporation has heeded public protests and suspended the sale of the .ORG domain zone, requesting additional information about the deal, including information about the owners of the questionable firm Ethos Capital. Recall that in November 2019, the closed joint-stock company Ethos Capital, specifically created for this purpose, agreed to purchase the nonprofit organization The Internet Society (ISOC), including the operator Public […]

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