<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Linux on 黄文卓 | DevOps Engineer</title><link>https://socake.github.io/tags/linux/</link><description>Recent content in Linux on 黄文卓 | DevOps Engineer</description><generator>Hugo -- gohugo.io</generator><language>zh-CN</language><managingEditor>17691281867@163.com (Wenzhuo Huang)</managingEditor><webMaster>17691281867@163.com (Wenzhuo Huang)</webMaster><copyright>© 2026 Wenzhuo Huang</copyright><lastBuildDate>Sun, 12 Apr 2026 11:00:00 +0800</lastBuildDate><atom:link href="https://socake.github.io/tags/linux/index.xml" rel="self" type="application/rss+xml"/><item><title>Kubernetes cgroup v2 迁移实践</title><link>https://socake.github.io/posts/kubernetes-cgroup-v2-migration/</link><pubDate>Sun, 12 Apr 2026 11:00:00 +0800</pubDate><author>17691281867@163.com (Wenzhuo Huang)</author><guid>https://socake.github.io/posts/kubernetes-cgroup-v2-migration/</guid><description>K8s 1.25+ 默认启用 cgroup v2，MemoryQoS 和 PSI 等新特性只在 v2 支持。本文给出完整的节点迁移操作流程和常见问题解决方案。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://socake.github.io/posts/kubernetes-cgroup-v2-migration/featured.jpg"/></item><item><title>USE Method：系统性能分析方法论</title><link>https://socake.github.io/posts/use-method-performance-analysis/</link><pubDate>Sun, 12 Apr 2026 11:00:00 +0800</pubDate><author>17691281867@163.com (Wenzhuo Huang)</author><guid>https://socake.github.io/posts/use-method-performance-analysis/</guid><description>随机尝试是性能排查的大敌。USE Method 用一个三维框架（使用率/饱和度/错误）把所有系统资源纳入统一分析体系，本文从原理到实战全面解析这套方法论，并提供 K8s 环境下的 PromQL 映射和工具链速查表。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://socake.github.io/posts/use-method-performance-analysis/featured.jpg"/></item><item><title>bpftrace 实战：线上问题排查的瑞士军刀</title><link>https://socake.github.io/posts/bpftrace-performance-debug/</link><pubDate>Sun, 12 Apr 2026 10:00:00 +0800</pubDate><author>17691281867@163.com (Wenzhuo Huang)</author><guid>https://socake.github.io/posts/bpftrace-performance-debug/</guid><description>strace 太重、perf 太原始、BCC 工具集要装一堆依赖——bpftrace 是这三者之间的平衡点。本文用四个真实场景讲清楚 bpftrace 的工作方式，帮你把它变成日常排查工具。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://socake.github.io/posts/bpftrace-performance-debug/featured.jpg"/></item><item><title>Linux 内核网络参数深度调优：高并发场景实战</title><link>https://socake.github.io/posts/linux-kernel-network-tuning/</link><pubDate>Fri, 20 Mar 2026 10:00:00 +0800</pubDate><author>17691281867@163.com (Wenzhuo Huang)</author><guid>https://socake.github.io/posts/linux-kernel-network-tuning/</guid><description>在高并发场景下，Linux 默认内核参数往往成为系统瓶颈。本文从原理出发，系统讲解 TCP backlog、TIME_WAIT、keepalive、内存缓冲区、conntrack、网卡队列（RSS/RPS/RFS）的调优方法，并提供 K8s 节点专属的 sysctl DaemonSet 方案和完整的压测验证流程。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://socake.github.io/posts/linux-kernel-network-tuning/featured.jpg"/></item><item><title>Linux 磁盘与文件系统管理</title><link>https://socake.github.io/docs/linux/linux%E7%A3%81%E7%9B%98%E4%B8%8E%E6%96%87%E4%BB%B6%E7%B3%BB%E7%BB%9F/</link><pubDate>Tue, 09 Dec 2025 10:00:00 +0800</pubDate><author>17691281867@163.com (Wenzhuo Huang)</author><guid>https://socake.github.io/docs/linux/linux%E7%A3%81%E7%9B%98%E4%B8%8E%E6%96%87%E4%BB%B6%E7%B3%BB%E7%BB%9F/</guid><description>从 fdisk 分区到 LVM 扩容快照，从 ext4 vs xfs 对比到 fsck 故障恢复，以及 /proc 和 /sys 中与存储相关的关键路径速查。</description></item><item><title>Linux 进程管理与作业控制</title><link>https://socake.github.io/docs/linux/linux%E8%BF%9B%E7%A8%8B%E7%AE%A1%E7%90%86/</link><pubDate>Tue, 09 Dec 2025 10:00:00 +0800</pubDate><author>17691281867@163.com (Wenzhuo Huang)</author><guid>https://socake.github.io/docs/linux/linux%E8%BF%9B%E7%A8%8B%E7%AE%A1%E7%90%86/</guid><description>从 ps/pstree 进程查看到 kill/pkill 信号发送，从 nice/ionice 优先级调整到 screen/tmux 会话管理，结合 systemctl/journalctl 和 ulimit 资源控制。</description></item><item><title>Linux 网络命令速查</title><link>https://socake.github.io/docs/linux/linux%E7%BD%91%E7%BB%9C%E5%91%BD%E4%BB%A4%E9%80%9F%E6%9F%A5/</link><pubDate>Tue, 09 Dec 2025 10:00:00 +0800</pubDate><author>17691281867@163.com (Wenzhuo Huang)</author><guid>https://socake.github.io/docs/linux/linux%E7%BD%91%E7%BB%9C%E5%91%BD%E4%BB%A4%E9%80%9F%E6%9F%A5/</guid><description>系统整理 Linux 网络排查工具链，包含 ss 连接状态过滤、tcpdump 过滤语法、iptables NAT 配置、curl 响应时间分析及 DNS 工具使用方法。</description></item><item><title>Linux 系统性能排查手册</title><link>https://socake.github.io/docs/linux/linux%E7%B3%BB%E7%BB%9F%E6%80%A7%E8%83%BD%E6%8E%92%E6%9F%A5/</link><pubDate>Tue, 09 Dec 2025 10:00:00 +0800</pubDate><author>17691281867@163.com (Wenzhuo Huang)</author><guid>https://socake.github.io/docs/linux/linux%E7%B3%BB%E7%BB%9F%E6%80%A7%E8%83%BD%E6%8E%92%E6%9F%A5/</guid><description>覆盖 top/htop/mpstat/vmstat/iostat/sar 等核心命令，结合 iowait/softirq/CPU 窃取等指标含义，提供完整排查流程和组合命令速查。</description></item><item><title>Linux 用户权限与安全管理</title><link>https://socake.github.io/docs/linux/linux%E7%94%A8%E6%88%B7%E6%9D%83%E9%99%90%E7%AE%A1%E7%90%86/</link><pubDate>Tue, 09 Dec 2025 10:00:00 +0800</pubDate><author>17691281867@163.com (Wenzhuo Huang)</author><guid>https://socake.github.io/docs/linux/linux%E7%94%A8%E6%88%B7%E6%9D%83%E9%99%90%E7%AE%A1%E7%90%86/</guid><description>从 useradd/usermod 用户管理到 SUID/SGID 特殊权限，从 sudoers 配置到 fail2ban 防暴力破解，覆盖 Linux 系统安全加固的核心操作。</description></item><item><title>Vim 速查手册</title><link>https://socake.github.io/docs/linux/vim%E9%80%9F%E6%9F%A5%E6%89%8B%E5%86%8C/</link><pubDate>Tue, 09 Dec 2025 10:00:00 +0800</pubDate><author>17691281867@163.com (Wenzhuo Huang)</author><guid>https://socake.github.io/docs/linux/vim%E9%80%9F%E6%9F%A5%E6%89%8B%E5%86%8C/</guid><description>覆盖 Vim 四种模式、所有移动方式、宏录制与寄存器、.vimrc 推荐配置，以及批量删除空行、注释多行、列操作等运维高频场景。</description></item><item><title>Shell 脚本运维速查手册</title><link>https://socake.github.io/docs/languages/shell/shell-%E8%BF%90%E7%BB%B4%E9%80%9F%E6%9F%A5/</link><pubDate>Mon, 08 Dec 2025 10:00:00 +0800</pubDate><author>17691281867@163.com (Wenzhuo Huang)</author><guid>https://socake.github.io/docs/languages/shell/shell-%E8%BF%90%E7%BB%B4%E9%80%9F%E6%9F%A5/</guid><description>Shell 运维速查手册，包含文本处理（awk/sed/grep）、进程排查、网络诊断、批量操作模板，以及实用的脚本编写规范。</description></item><item><title>DevOps/运维工程师面试题精选：K8s、Linux、网络高频考点</title><link>https://socake.github.io/posts/devops-interview-questions/</link><pubDate>Sun, 07 Dec 2025 13:07:00 +0800</pubDate><author>17691281867@163.com (Wenzhuo Huang)</author><guid>https://socake.github.io/posts/devops-interview-questions/</guid><description>基于真实面试经验整理的运维/DevOps 面试题，覆盖 K8s 调度、故障排查、Linux 内核、网络协议等方向，附「面试官真正想考的点」，帮你把答案说到位。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://socake.github.io/posts/devops-interview-questions/featured.jpg"/></item><item><title>TCP/IP 网络排障：抓包与连接问题诊断</title><link>https://socake.github.io/posts/tcp-network-troubleshooting/</link><pubDate>Tue, 21 Oct 2025 11:44:00 +0800</pubDate><author>17691281867@163.com (Wenzhuo Huang)</author><guid>https://socake.github.io/posts/tcp-network-troubleshooting/</guid><description>网络问题排查的核心是「眼见为实」，没有抓包的排障都是猜测。本文系统梳理了 tcpdump 的实战用法、TCP 连接状态机分析、conntrack 追踪，以及 Kubernetes 中 NodePort/LoadBalancer 的典型网络故障定位方法。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://socake.github.io/posts/tcp-network-troubleshooting/featured.jpg"/></item><item><title>Nginx 运维完全指南：反向代理、负载均衡、HTTPS 与限流</title><link>https://socake.github.io/posts/nginx-ops-complete/</link><pubDate>Thu, 24 Oct 2024 12:06:00 +0800</pubDate><author>17691281867@163.com (Wenzhuo Huang)</author><guid>https://socake.github.io/posts/nginx-ops-complete/</guid><description>Nginx 知道怎么装，但真的会用吗？本文从配置结构说起，完整覆盖反向代理、负载均衡策略、Let&amp;rsquo;s Encrypt 证书、限流配置、日志分析和性能调优，附常见 502/SSL 故障排查。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://socake.github.io/posts/nginx-ops-complete/featured.jpg"/></item><item><title>Shell 脚本实战：Bash 自动化运维从入门到工程化</title><link>https://socake.github.io/posts/shell-script-automation/</link><pubDate>Wed, 02 Oct 2024 13:03:00 +0800</pubDate><author>17691281867@163.com (Wenzhuo Huang)</author><guid>https://socake.github.io/posts/shell-script-automation/</guid><description>Shell 脚本是 SRE 的第一生产力工具。本文从语法精要出发，覆盖批量操作、日志轮转、健康检查等常用运维模式，再到 getopts、trap 信号处理和脚本工程化思路，最后总结引号地狱、变量作用域等经典踩坑。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://socake.github.io/posts/shell-script-automation/featured.jpg"/></item><item><title>Linux 系统管理精要——DevOps 工程师必知的系统层知识</title><link>https://socake.github.io/posts/linux-system-admin-devops/</link><pubDate>Mon, 16 Sep 2024 13:36:00 +0800</pubDate><author>17691281867@163.com (Wenzhuo Huang)</author><guid>https://socake.github.io/posts/linux-system-admin-devops/</guid><description>做了多年 DevOps，我越来越觉得 Linux 系统层的知识是一切排障的基础。当 Kubernetes Pod 莫名被杀、Java 服务突然无响应、磁盘 IO 飙高导致整机卡顿——最终都要落到系统层来定位。这篇文章把我在生产中最常用的系统管理技能系统梳理一遍。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://socake.github.io/posts/linux-system-admin-devops/featured.jpg"/></item><item><title>Linux 性能调优实战：CPU、内存、IO 瓶颈的系统排查方法</title><link>https://socake.github.io/posts/linux-performance-tuning/</link><pubDate>Sun, 08 Sep 2024 13:50:00 +0800</pubDate><author>17691281867@163.com (Wenzhuo Huang)</author><guid>https://socake.github.io/posts/linux-performance-tuning/</guid><description>从工具链选择到实战排查，梳理 Linux 性能调优的完整方法论：CPU 上下文切换与软中断分析、OOM 日志解读、IO 调度器选择、TCP TIME_WAIT 处理，以及容器环境下 cgroup 限制的特殊影响。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" 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