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Linux排错不秃头|超详细的故障排查手册

  • 2026-08-18 23:11:50
Linux排错不秃头|超详细的故障排查手册

做Linux最头疼的，不是命令不会，而是服务器一出问题，不知道先查哪

CPU飙高、内存告警、磁盘爆满、端口不通……新人最容易犯的毛病，就是一报错就搜命令，一异常就重启

其实Linux排错是有顺序的。我把平时常用的进程、磁盘、网络、日志、服务排查思路整理成了一套，碰到问题就照着往下查。

~

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8月9日周日 | Python热门项目

Linux mmap 四种映射模式:文件共享、私有隔离、匿名分配,到底该用哪个?

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  1. CONNECT:[ UseTime:0.001060s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001419s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000692s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000682s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001318s ]
  6. SELECT * FROM `set` [ RunTime:0.000516s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001506s ]
  8. SELECT * FROM `article` WHERE `id` = 509478 LIMIT 1 [ RunTime:0.001362s ]
  9. UPDATE `article` SET `lasttime` = 1787294130 WHERE `id` = 509478 [ RunTime:0.009775s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 67 LIMIT 1 [ RunTime:0.008388s ]
  11. SELECT * FROM `article` WHERE `id` < 509478 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001071s ]
  12. SELECT * FROM `article` WHERE `id` > 509478 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001077s ]
  13. SELECT * FROM `article` WHERE `id` < 509478 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002419s ]
  14. SELECT * FROM `article` WHERE `id` < 509478 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.010064s ]
  15. SELECT * FROM `article` WHERE `id` < 509478 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002224s ]
0.210863s