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2018-03-01 补充端口使用情况分析
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‎monitor.md

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@@ -121,6 +121,46 @@ Timing buffered disk reads: 806 MB in 3.00 seconds = 268.52 MB/sec
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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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## 端口使用情况
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- 查看 3316 端口是否有被使用：`lsof -i:3316`，有被使用会输出类似如下信息，如果没被使用会没有任何信息返回。
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```
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COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
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java 12011 root 77u IPv6 4506842 0t0 TCP JDu4e00u53f7:58560->116.196.110.69:aicc-cmi (ESTABLISHED)
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java 12011 root 78u IPv6 4506843 0t0 TCP JDu4e00u53f7:58576->116.196.110.69:aicc-cmi (ESTABLISHED)
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java 12011 root 79u IPv6 4506844 0t0 TCP JDu4e00u53f7:58578->116.196.110.69:aicc-cmi (ESTABLISHED)
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java 12011 root 80u IPv6 4506845 0t0 TCP JDu4e00u53f7:58574->116.196.110.69:aicc-cmi (ESTABLISHED)
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java 12011 root 82u IPv6 4506846 0t0 TCP JDu4e00u53f7:58562->116.196.110.69:aicc-cmi (ESTABLISHED)
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java 12011 root 83u IPv6 4506847 0t0 TCP JDu4e00u53f7:58564->116.196.110.69:aicc-cmi (ESTABLISHED)
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java 12011 root 84u IPv6 4506848 0t0 TCP JDu4e00u53f7:58566->116.196.110.69:aicc-cmi (ESTABLISHED)
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java 12011 root 85u IPv6 4506849 0t0 TCP JDu4e00u53f7:58568->116.196.110.69:aicc-cmi (ESTABLISHED)
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java 12011 root 86u IPv6 4506850 0t0 TCP JDu4e00u53f7:58570->116.196.110.69:aicc-cmi (ESTABLISHED)
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java 12011 root 87u IPv6 4506851 0t0 TCP JDu4e00u53f7:58572->116.196.110.69:aicc-cmi (ESTABLISHED)
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docker-pr 13551 root 4u IPv6 2116824 0t0 TCP *:aicc-cmi (LISTEN)
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```
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- 查看所有在用的端口：`netstat -ntlp`
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```
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Active Internet connections (only servers)
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Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
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tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 1/systemd
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tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 746/sshd
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tcp 0 0 127.0.0.1:32000 0.0.0.0:* LISTEN 12011/java
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tcp6 0 0 :::9066 :::* LISTEN 12011/java
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tcp6 0 0 :::6379 :::* LISTEN 28668/docker-proxy
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tcp6 0 0 :::111 :::* LISTEN 1/systemd
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tcp6 0 0 :::3316 :::* LISTEN 13551/docker-proxy
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tcp6 0 0 :::22 :::* LISTEN 746/sshd
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tcp6 0 0 :::35224 :::* LISTEN 12011/java
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tcp6 0 0 :::3326 :::* LISTEN 14203/docker-proxy
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tcp6 0 0 :::1984 :::* LISTEN 12011/java
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tcp6 0 0 :::8066 :::* LISTEN 12011/java
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tcp6 0 0 :::43107 :::* LISTEN 12011/java
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```
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## 参考资料
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