Update on L1 Terminal Fault (L1TF) mitigations
As related in ourprevious post, we are working towards the L1 Terminal Fault (L1TF) mitigations deployment and wanted to provide a brief update. Current situation The mitigations for all published...
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Google BBR是什么？以及在 CentOS 7 上如何部署
传统 TCP 拥塞控制算法，基于 丢包反馈 的协议。 基于「丢包反馈」的协议是一种 被动式 的拥塞控制机制，其依据网络中的 丢包事件 来做网络拥塞判断。即便网络中的负载很高时，只要没有产生拥塞丢包，协议就不会主动降低自己的发送速度。 这种协议可以 最大程度的利用网络剩余带宽，提高吞吐量。...
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Measuring context switching and memory overheads for Linux threads
In this post I want to explore the costs of threads on modern linux machines, both in terms of time and space. The background context is designing high-load concurrent servers, where using threads is...
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Linux基金会：加速开源创新
执行董事吉姆泽姆林（Jim Zemlin） 在温哥华举行的开源峰会 上致开幕词时说，linux基金会的工作是创造创新契机，并且加速开源创新。 组织如何推动跨行业创新的示例可以在诸如Let's Encrypt这样的项目中看到，这是一个免费的自动化证书颁发机构，用于加密整个Web，汽车级Linux，Hyperledger和新学院软件基金会关注电影行业内的开放协作。...
View ArticleSELinux tweaks for php-fpm and New Relic on CentOS 7
Minor things need adjusting after New Relic installation for it to work nicely with SElinux. pidfile location Default location for newrelic.daemon.pifile is /var/run/newrelic-daemon.pid . /var/run is...
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Fuzzing Counter-Strike: Global Offensive maps files with AFL
RealWorldCTF 2018 had a really fun challenge called “P90 Rush B”, an allusion to a desparate tactic employed in the Valve game “Counter-Strike: Global Offensive”. It was about finding and exploiting a...
View ArticleCentOS上创建Kubernetes集群
编辑推荐: 本文来自于网络，文章详细介绍了如何使用Kubeadm和Ansible成功在CentOS 7上设置Kubernetes集群以实现自动化的相关内容。 介绍...
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Linux下使用IPIP隧道将额外的IP地址映射给其它服务器使用
网络方案需求背景： 客户在某IDC机房托管了一台服务器，此服务器额外增加了有4个可用IP地址，目前只用了原服务器上的一个IP地址，其余4个额外的IP虽然以子IP的方式设置好了，互联网上也能PING的通，但这4个额外的IP一直是空闲着，完全处于浪费状态，所以客户打算把这些IP地址通过隧道方式映射出来给别的地方的机器用，如公司自己机房的服务器。...
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How We Introduced Cameroonian Kids To Programming The Raspberry Pi “Raspberry...
Its August and it’s school vacation in Cameroon:blush: and while others are on summer holidays, it’s the maker’s moment at the “Raspberry Jam Camer”. We share our passion for tech and the last working...
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Provisioning a headless Raspberry Pi
The typical way of installing a fresh Raspberry Pi is to attach power, keyboard, mouse, and an HDMI monitor. This is a pain, especially for the diminutive RPi Zero. This blogpost describes a number of...
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LACP bonding and Linux configuration
This blog introduces Link Aggregation Control Protocol (LACP) bonding and provides step-by-step configuration of LACP bonding on Red Hat Enterprise linux (RHEL) and CentOS operating systems versions 6...
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Discover hidden gems in LibreOffice
LibreOffice is the most popular free and open source office suite. It’s included by default in many linux distributions, such as Fedora Workstation . Chances are that you use it fairly often, but how...
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如何理解高性能网络模型？这篇文章说透了
【51CTO.com原创稿件】本文旨在为大家提供有用的概览以及网络服务模型的比较，以揭开设计和实现高性能网络架构的神秘面纱。 服务端处理网络请求 首先看看服务端处理网络请求的典型过程： 由上图可以看到，主要处理步骤包括： 获取请求数据，客户端与服务器建立连接发出请求，服务器接受请求（1-3）。 构建响应，当服务器接收完请求，并在用户空间处理客户端的请求，直到构建响应完成（4）。...
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DesktopNaotu：桌面版脑图
桌面版脑图(DesktopNaotu) 软件介绍 桌面版脑图是基于百度脑图的本地化版本，帮助你在没有互联网环境的情况下，依然可以使用脑图工具。 如何下载 方法1：通过 百度云下载 方法2：通过 Github 的 Releases 下载 支持系统 windows 32位 Windows 64位 Mac OSX 64位 linux 64位 功能特征 包含百度脑图的基本功能 本地km文件的操作...
View ArticleCanonical Needs Your Help to Test Nvidia GPU Support for Ubuntu 18.10 and 18.04
Canonical's Will Cooke is inviting members of the Ubuntu linux community to participate in a testing program that aims to smooth the experience for those using Nvidia graphics cards with proprietary...
View ArticleIt's Official: Linux Kernel 4.19 Will Be the Next LTS (Long-Term Support) Series
The next long-term supported linux kernel series was revealed recently as Linux 4.19 by the long-time Linux kernel developer and maintainer Greg Kroah-Hartman. Now that Linux kernel 4.17 has reached...
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Canonical邀请Ubuntu社区成员测试N卡驱动
Canonical的Will Cooke近日向Ubuntu linux社区成员发出邀请，针对NVIDIA显卡的专有和开源驱动进行测试以便于为Ubuntu用户提供更好、更流畅的使用体验。Canonical正在寻找拥有NVIDIA显卡的志愿者，在Ubuntu 18.04 LTS（Bionic Beaver）和即将推出的Ubuntu 18.10（Cosmic...
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service mesh istio微服务实验之监控日志与可视化
# 下载yml文件 mkdir jaeger && cd jaeger wget https://raw.githubusercontent.com/jaegertracing/jaeger-kubernetes/master/all-in-one/jaeger-all-in-one-template.yml # 实验环境不支持 LoadBalancer #...
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Linux Kernel 4.19敲定为下个长期支持版本
linux Kernel开发者和维护总负责人 Greg Kroah-Hartman今天正式敲定，即将发布的4.19分支将会是长期支持版本。目前Linux Kernel 4.17已经结束生命周期，而4.18并不具备成为长期支持版本的必要因素，因此LTSI社区就此事和Greg Kroah-Hartman进行了商谈。 最终答案是，即将到来的Linux...
View ArticleHelpful Terminal Commands for Beginners!
This cheat sheet was originally posted on malikbrowne.com . I love learning new commands and tools to optimize my workflow on my Mac. Since I have started working with more terminal-oriented...
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