https://www.sre.wang/tags/linux/Recent content in Linux on SRE工程实践Hugo -- gohugo.iozh-cnFri, 17 Jul 2026 09:20:09 +0800https://www.sre.wang/posts/linux-kernel-crash-kdump/Fri, 17 Jul 2026 09:20:09 +0800https://www.sre.wang/posts/linux-kernel-crash-kdump/从 kdump 原理到 crash 工具分析实战，手把手配置生产级内核崩溃捕获系统https://www.sre.wang/posts/linux-auditd-security-auditing/Wed, 15 Jul 2026 02:09:45 +0800https://www.sre.wang/posts/linux-auditd-security-auditing/从安装部署到规则编写、日志分析、性能调优，覆盖 auditd 在生产环境的完整实践https://www.sre.wang/posts/linux-cpu-isolation-numa-tuning/Mon, 13 Jul 2026 03:22:07 +0800https://www.sre.wang/posts/linux-cpu-isolation-numa-tuning/从 isolcpus 到 cpuset、从 NUMA 亲和到中断绑核，生产级 CPU 隔离与调优全流程实战https://www.sre.wang/posts/linux-namespace-cgroups-basics/Sun, 28 Jun 2026 16:34:00 +0800https://www.sre.wang/posts/linux-namespace-cgroups-basics/Linux 命名空间与 cgroups：容器技术的底层基础的学习笔记与实践总结https://www.sre.wang/posts/nginx-performance-tuning/Fri, 12 Sep 2025 19:44:00 +0800https://www.sre.wang/posts/nginx-performance-tuning/Nginx 性能调优：从配置到内核参数的完整实践的学习笔记与实践总结https://www.sre.wang/posts/linux-strace-debugging/Thu, 11 Sep 2025 12:45:00 +0800https://www.sre.wang/posts/linux-strace-debugging/Linux 系统调用追踪：strace 与 ltrace 调试实战的学习笔记与实践总结https://www.sre.wang/posts/linux-iptables-nftables/Fri, 10 Jan 2025 00:00:00 +0000https://www.sre.wang/posts/linux-iptables-nftables/深入理解 Netfilter 框架、iptables 五链四表、nftables 优势、规则编写、NAT/端口转发、连接追踪及性能优化实战https://www.sre.wang/posts/linux-process-scheduling/Wed, 29 May 2024 00:00:00 +0000https://www.sre.wang/posts/linux-process-scheduling/深入理解 Linux CFS 调度器原理、nice 值与 cgroup CPU 控制、实时调度、CPU 亲和性及调度延迟排查实战https://www.sre.wang/posts/linux-memory-management-tuning/Thu, 09 May 2024 00:00:00 +0000https://www.sre.wang/posts/linux-memory-management-tuning/深入剖析 Linux 虚拟内存、Page Cache、Swap、OOM Killer、cgroup v2 内存限制及内存泄漏排查的完整实战指南https://www.sre.wang/posts/linux-boot-process-grub/Fri, 03 May 2024 00:00:00 +0000https://www.sre.wang/posts/linux-boot-process-grub/从 BIOS/UEFI 到 GRUB2、initramfs、systemd 启动流程全解，涵盖 target/runlevel、服务依赖管理、启动性能优化及内核崩溃恢复https://www.sre.wang/posts/linux-package-management/Fri, 26 Apr 2024 00:00:00 +0000https://www.sre.wang/posts/linux-package-management/apt/dpkg 与 yum/dnf/rpm 体系全解，涵盖仓库管理、依赖解析、deb/rpm 包构建、版本锁定、离线安装及镜像源优化https://www.sre.wang/posts/linux-disk-io-diagnosis/Wed, 27 Mar 2024 00:00:00 +0000https://www.sre.wang/posts/linux-disk-io-diagnosis/详细梳理 Linux 磁盘 I/O 性能指标体系、诊断工具实战、I/O 调度器选择策略、SSD/HDD 优化差异，并附高 I/O wait 生产排查案例https://www.sre.wang/posts/cron-vs-systemd-timer/Mon, 18 Mar 2024 00:00:00 +0000https://www.sre.wang/posts/cron-vs-systemd-timer/从 cron 语法到 systemd timer 优势，从任务设计到失败重试与告警，系统对比两种定时任务方案并覆盖分布式场景https://www.sre.wang/posts/linux-log-management-journalctl/Wed, 14 Feb 2024 00:00:00 +0000https://www.sre.wang/posts/linux-log-management-journalctl/journald 原理与配置、journalctl 查询技巧、logrotate 日志轮转、结构化日志、远程日志收集及日志分析实战https://www.sre.wang/posts/linux-systemd-deep-guide/Tue, 13 Feb 2024 00:00:00 +0000https://www.sre.wang/posts/linux-systemd-deep-guide/从 systemd 架构到 unit 文件深入分析，涵盖依赖管理、cgroup 资源控制、journalctl 日志管理和生产级 service 文件编写https://www.sre.wang/posts/linux-performance-profiling-tools/Fri, 19 Jan 2024 00:00:00 +0000https://www.sre.wang/posts/linux-performance-profiling-tools/从 top/htop/atop 到 perf/flamegraph，覆盖 CPU、内存、IO、网络性能诊断工具集及使用场景速查https://www.sre.wang/posts/shell-automation-tips/Thu, 11 Jan 2024 00:00:00 +0000https://www.sre.wang/posts/shell-automation-tips/分享Shell脚本在自动化运维中的实用技巧，涵盖日志清理、批量部署、健康检查等常见场景https://www.sre.wang/posts/linux-fs-filesystem-optimization/Mon, 01 Jan 2024 00:00:00 +0000https://www.sre.wang/posts/linux-fs-filesystem-optimization/ext4/xfs/btrfs/zfs 文件系统深度对比、挂载参数优化、IO 调度器选择、journal 模式、fsync 性能及 SSD/TRIM 调优实战https://www.sre.wang/posts/linux-kernel-parameters-tuning/Thu, 21 Dec 2023 00:00:00 +0000https://www.sre.wang/posts/linux-kernel-parameters-tuning/sysctl 体系全解，涵盖网络参数、文件描述符、内存参数、安全参数及生产环境调优模板与参数验证方法https://www.sre.wang/posts/linux-security-hardening-checklist/Mon, 18 Dec 2023 00:00:00 +0000https://www.sre.wang/posts/linux-security-hardening-checklist/详细梳理 Linux 安全加固全流程：最小化安装、SSH 加固、SELinux/AppArmor、auditd 审计、防火墙管理，并附可运行的安全基线检查脚本https://www.sre.wang/posts/linux-ssh-security-best-practices/Tue, 12 Dec 2023 00:00:00 +0000https://www.sre.wang/posts/linux-ssh-security-best-practices/SSH 密钥与证书认证、sshd_config 硬化、跳板机、端口转发与反向隧道、SSH Agent、审计日志及 Fail2ban 完整实践