eBPF 介绍
很早前就想写一篇关于eBPF的文章，但是迟迟没有动手，这两天有点时间，所以就来写一篇，这文章主要还是简单的介绍eBPF 是用来干什么的，并通过几个示例来介绍是怎么玩的，这个技术非常非常之强，Linux 操作系统的观测性实在是太强大了，并在 BCC 加持下变得一览无余。这个技术不是一般的运维人员或是系统管理员可以驾驭的，这个还是要有底层系统知识并有一定开发能...| 酷 壳 - CoolShell
В попередній частині – Arch Linux: установка у 2025 – диски, шифрування, встановлення системи – встановили саму систему, тепер дійшли руки до робочого оточення. Пройдемось по загальним налаштуванням Arch linux (точніше, будь-якого Linux), потім поговоримо про вибір Desktop Environments, і власн...| RTFM: Linux, DevOps та системне адміністрування
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 » The post Kubernetes: Pod resources.requests, resources.limits, and Linux cgroup...| RTFM: Linux, DevOps, and system administration
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… Read More » The post TCP/IP: OSI and TCP/IP models, TCP packets, Linux sockets and ports first appeared on RTFM: Linux, DevOps, and system administration.| RTFM: Linux, DevOps, and system administration
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.… Read More » The post Arch Linux: linux-firmware-nvidia: /usr/lib/firmware/nvidia/ exists in filesystem first appeared on RTFM: Linux, DevOps, and system administration.| RTFM: Linux, DevOps, and system administration
很早前就想写一篇关于eBPF的文章，但是迟迟没有动手，这两天有点时间，所以就来写一篇，这文章主要还是简单的介绍eBPF 是用来干什么的，并通过几个示例来介绍是怎么玩的，这个技术非常非常之强，Linux 操作系统的观测性实在是太强大了，并在 BCC 加持下变得一览无余。这个技术不是一般的运维人员或是系统管理员可以驾驭的，这个还是要有底层系统知识并有一定开发能...| 酷 壳 - CoolShell
今天来讲一讲TCP 的 TIME_WAIT 的问题。这个问题尽人皆知，不过，这次遇到的是不太一样的场景，前两天也解决了，正好写篇文章，顺便把 TIME_WAIT 的那些事都说一说。对了，这个场景，跟我开源的探活小工具 EaseProbe 有关，我先说说这个场景里的问题，然后，顺着这个场景跟大家好好说一下这个事。| 酷 壳 - CoolShell
