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2018-01-28 补充监控相关命令
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‎monitor.md

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@@ -96,11 +96,24 @@ Timing buffered disk reads: 806 MB in 3.00 seconds = 268.52 MB/sec
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## 网络监控
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- 安装 iftop（需要有 EPEL 源）：`yum install -y iftop`
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- 如果没有 EPEL 源：`yum install -y epel-release`
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- 常用命令：
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- `iftop`：默认是监控第一块网卡的流量
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- `iftop -i eth1`：监控eth1
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- `iftop -n`：直接显示IP, 不进行DNS反解析
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- `iftop -N`：直接显示连接埠编号, 不显示服务名称
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- `iftop -F 192.168.1.0/24 or 192.168.1.0/255.255.255.0`：显示某个网段进出封包流量
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## 参考资料
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- <http://man.linuxde.net/dd>
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- <https://linux.cn/article-6104-1.html>
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- <http://www.cnblogs.com/ggjucheng/archive/2013/01/13/2858923.html>
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- <http://coolnull.com/3649.html>
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