Tag Archives: Linux

Kubernetes: Pod resources.requests, resources.limits, and Linux cgroups
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20 July 2025

How exactly do resources.requests and resources.limits in a Kubernetes manifest works “under the hood”, and how exactly will Linux allocate and limit resources for containers? So, in Kubernetes for Pods, we can set two main parameters for CPU and Memory – the spec.containers.resources.requests and spec.containers.resources.limits fields: resources.requests: affects how and where a Pod will be… Read More »

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TCP/IP: OSI and TCP/IP models, TCP packets, Linux sockets and ports
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19 July 2025

It’s difficult to describe in one post what thousands of books have been written about in a thousand pages, but today we’ll try to quickly review the basics of how hosts communicate on a network. First, let’s talk about the OSI and TCP/IP models, then about packet structure and connection establishment, and finally, we’ll look… Read More »

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Arch Linux: linux-firmware-nvidia: /usr/lib/firmware/nvidia/ exists in filesystem
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9 July 2025

Even though the changes were announced in emails from Arch Linux, for some reason, many people have had problems with the latest update: in the Arch Linux subreddits on Reddit, people are complaining like “Everything is broken, what should I do now?” Let’s see how to complete the upgrade and what exactly has changed. The… Read More »

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Windows: Windows Subsystem for Linux and Ubuntu Linux installation
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14 March 2021

Windows Subsystem for Linux (WSL) is a Windows subsystem that helps to run various Linux distribution directly from the Windows OS. WSL version 2 which is the default version now uses the Hyper-V virtualization under the hood to install and run Linux and share files and devices between both systems. Windows Subsystem for Linux To… Read More »

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