<?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 Greatfinish Blog</title><link>https://greatfinish.top/categories/linux/</link><description>Recent content in Linux on Greatfinish Blog</description><generator>Hugo -- gohugo.io</generator><language>zh-cn</language><copyright>© 2026 Greatfinish Blog · [沪ICP备2026022892号](https://beian.miit.gov.cn/)</copyright><lastBuildDate>Fri, 22 May 2026 14:30:00 +0800</lastBuildDate><atom:link href="https://greatfinish.top/categories/linux/index.xml" rel="self" type="application/rss+xml"/><item><title>Linux 性能故障诊断实战：CPU、I/O、内存与网络排查命令详解</title><link>https://greatfinish.top/posts/linux-performance-troubleshooting-commands/</link><pubDate>Fri, 22 May 2026 14:30:00 +0800</pubDate><guid>https://greatfinish.top/posts/linux-performance-troubleshooting-commands/</guid><description>一篇 Linux OS 层性能排障手册，系统梳理 uptime、top、vmstat、mpstat、pidstat、iostat、iotop、free、sar、ss、tcpdump 等命令的用法、关键参数、重点字段和生产判断标准。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://greatfinish.top/posts/linux-performance-troubleshooting-commands/featured.jpg"/></item><item><title>数据库磁盘 I/O 瓶颈排查：基于 iostat 的核心指标解读与生产判断方法</title><link>https://greatfinish.top/posts/database-io-bottleneck-iostat/</link><pubDate>Sat, 09 May 2026 18:30:00 +0800</pubDate><guid>https://greatfinish.top/posts/database-io-bottleneck-iostat/</guid><description>一篇数据库磁盘 I/O 排查方法总结，基于 iostat 核心指标分析磁盘延迟、队列、IOPS、吞吐量和典型生产现象，并给出数据库场景下的告警阈值和判断方法。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://greatfinish.top/posts/database-io-bottleneck-iostat/featured.jpg"/></item><item><title>rclone 跨云对象存储迁移实战：华为云 OBS 到阿里云 OSS</title><link>https://greatfinish.top/posts/rclone-obs-to-oss-migration/</link><pubDate>Wed, 25 Mar 2026 23:30:00 +0800</pubDate><guid>https://greatfinish.top/posts/rclone-obs-to-oss-migration/</guid><description>一篇 rclone 跨云对象存储迁移实战文档，基于华为云 OBS 到阿里云 OSS 的场景，演示 remote 配置、对象复制、迁移校验、增量补传和 sync 使用风险。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://greatfinish.top/posts/rclone-obs-to-oss-migration/featured.jpg"/></item><item><title>CentOS 7.9 OpenSSH 升级到 9.9p1 实战</title><link>https://greatfinish.top/posts/opensshupgrade/</link><pubDate>Sun, 26 Jan 2025 16:40:45 +0800</pubDate><guid>https://greatfinish.top/posts/opensshupgrade/</guid><description>通过 openssh-rpms 制作 OpenSSH 9.9p1 RPM 升级包，完成 CentOS 7.9 环境下的依赖安装、源码准备、RPM 编译、备份配置、升级安装和服务验证。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://greatfinish.top/posts/opensshupgrade/featured.jpg"/></item></channel></rss>