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Linux网络排查:比traceroute更强的mtr命令实战

  • 2026-06-28 09:49:49
Linux网络排查:比traceroute更强的mtr命令实战
昨天我们介绍了linux中用于路由排查的经典工具traceroute。
今天要介绍的是另一个更强大的工具mtr,它同时具备ping和traceroute的能力。也是我们网络问题排查中的一个重要工具。
一、mtr的核心功能
mtr是一个结合了ping和traceroute功能的网络诊断工具。它不仅可以显示从本机到目标主机经过的路由节点,还能实时统计每个节点的丢包率和延迟,非常适合排查网络抖动、丢包等问题。
一句话概括起来就是:mtr=ping+traceroute+实时监控。
它适合在服务器访问慢、跨境链路不稳定、虚拟云服务器网络故障定位等场景。
二、mtr安装
#以centos7为例yum -y install mtr#查看mtr安装情况mtr -version
备注:部分系统已默认安装。
三、mtr的基本用法
1、基本用法
mtr www.baidu.com
执行命令后会进入一个实时更新的界面,显示每一跳的:
  • loss%:丢包率

  • avg:平均延迟

  • best:最低延迟

  • wrst:最高延迟

  • stdev:延迟标准差(波动程度)

q退出。
2.以数字形式显示
mtr -n www.baidu.com
-n跳过dns解析,提高命令速度。
3.指定探测次数
mtr -r -c 10 www.baidu.com
-r:生成报告模式
-c 10:发送10次探测
4.tcp模式
mtr -T -P 443 www.baidu.com
某些网络设备会禁ping,通过tcp可以绕过设备。
四、mtr结果分析
  • 第一跳:本机网关是否正常
  • 中间跳:是否有明显丢包或延迟突增

  • 最后一跳:是否到达目标服务器

一般如果只有某一跳丢包,可能是该节点qos限制,不一定真的有问题;如果连续多跳都丢包,通常是上游链路异常。
五、常见使用场景
1、网站访问慢
mtr -n www.example.commtr -n www.sohu.com
一般用来判断是网络出口问题还是远端线路问题。
2、服务器丢包
mtr -r -c 20 目标IP
3、端口连通性测试
mtr -T -P 22 服务器IP
六、注意事项
mtr 会产生持续网络探测流量,不建议在:
  • 生产高峰期频繁长时间运行
  • 对延迟极度敏感的业务服务器上滥用
七、总结
mtr是网络排错神器比ping更全面,比traceroute更直观,是运维必备技能之一,下次遇到“网络很卡但不知道哪里卡”的问题,不妨先跑一条:
mtr -n 目标地址
   如果你觉得这篇文章对你有帮助,欢迎点赞加关注 。 
#运维#linux运维#linux网络排查#mtr命令

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  1. CONNECT:[ UseTime:0.000554s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000698s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000293s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.001038s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000535s ]
  6. SELECT * FROM `set` [ RunTime:0.023769s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000886s ]
  8. SELECT * FROM `article` WHERE `id` = 499260 LIMIT 1 [ RunTime:0.026973s ]
  9. UPDATE `article` SET `lasttime` = 1783006070 WHERE `id` = 499260 [ RunTime:0.066648s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 67 LIMIT 1 [ RunTime:0.000300s ]
  11. SELECT * FROM `article` WHERE `id` < 499260 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001150s ]
  12. SELECT * FROM `article` WHERE `id` > 499260 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.069576s ]
  13. SELECT * FROM `article` WHERE `id` < 499260 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.103720s ]
  14. SELECT * FROM `article` WHERE `id` < 499260 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.095226s ]
  15. SELECT * FROM `article` WHERE `id` < 499260 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.131981s ]
0.622173s