mysql netstat-白红宇

mysql netstat

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发布时间：2019-06-08

本文共 3075 字，大约阅读时间需要 10 分钟。

netstat命令是一个监控TCP/IP网络的非常有用的工具，它可以显示路由表、实际的网络连接以及每一个网络接口设备的状态信息

输出结果可以分为两个部分，一个是Active Internet connections，另一个是Active UNIX domain sockets.

[root@DBSVR02 conf]# netstat

Active Internet connections (w/o servers)

Proto Recv-Q Send-Q Local Address Foreign Address State

tcp 0 0 168.168.80.9:ssh 168.168.80.1:22332 ESTABLISHED

tcp 0 0 168.168.80.9:ssh 168.168.80.1:22864 ESTABLISHED

Active UNIX domain sockets (w/o servers)

Proto RefCnt Flags Type State I-Node Path

unix 12 [ ] DGRAM 11595 /dev/log

unix 2 [ ] DGRAM 8807 @/org/kernel/udev/udevd

unix 2 [ ] DGRAM 12403 @/org/freedesktop/hal/udev_event

unix 3 [ ] STREAM CONNECTED 15684 /var/lib/mysql/mysql.sock

unix 3 [ ] STREAM CONNECTED 15683

unix 2 [ ] DGRAM 14977

unix 2 [ ] DGRAM 14485

unix 2 [ ] DGRAM 13976

unix 3 [ ] STREAM CONNECTED 13438 /var/run/dbus/system_bus_socket

unix 3 [ ] STREAM CONNECTED 13437

unix 2 [ ] DGRAM 13276

unix 2 [ ] DGRAM 13138

unix 2 [ ] DGRAM 13067

unix 3 [ ] STREAM CONNECTED 13051

unix 3 [ ] STREAM CONNECTED 13050

unix 3 [ ] STREAM CONNECTED 13047

unix 3 [ ] STREAM CONNECTED 13046

netstat 的常用参数: -t、-u、-w和 -x分别表示TCP、UDP、RAW和UNIX套接字连接。

-a标记，还会显示出等待连接（也就是说处于监听模式）的套接字。

-l 显示正在被监听(listen)的端口。

-n表示直接显示端口数字而不是通过察看/etc/service来转换为端口名。

-p选项表示列出监听的程序

[root@DBSVR02 conf]# netstat -nat

Active Internet connections (servers and established)

Proto Recv-Q Send-Q Local Address Foreign Address State

tcp 0 0 0.0.0.0:50790 0.0.0.0:* LISTEN

tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN

tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN

tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN

tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN

tcp 0 0 168.168.80.9:22 168.168.80.1:22332 ESTABLISHED

tcp 0 0 168.168.80.9:22 168.168.80.1:22864 ESTABLISHED

tcp 0 0 :::42855 :::* LISTEN

tcp 0 0 :::111 :::* LISTEN

tcp 0 0 :::80 :::* LISTEN

tcp 0 0 :::22 :::* LISTEN

tcp 0 0 ::1:631 :::* LISTEN

tcp 0 0 ::1:25 :::* LISTEN

[root@DBSVR02 conf]#

查看当前tcp监听端口

[root@DBSVR02 conf]# netstat -tl

Active Internet connections (only servers)

Proto Recv-Q Send-Q Local Address Foreign Address State

tcp 0 0 *:50790 *:* LISTEN

tcp 0 0 *:sunrpc *:* LISTEN

tcp 0 0 *:ssh *:* LISTEN

tcp 0 0 localhost:ipp *:* LISTEN

tcp 0 0 localhost:smtp *:* LISTEN

tcp 0 0 *:42855 *:* LISTEN

tcp 0 0 *:sunrpc *:* LISTEN

tcp 0 0 *:http *:* LISTEN

tcp 0 0 *:ssh *:* LISTEN

tcp 0 0 localhost:ipp *:* LISTEN

tcp 0 0 localhost:smtp *:* LISTEN

[root@DBSVR02 conf]#

查看当前tcp监听端口, 需要显示监听的程序名,当不清楚mysql的监听端口时比较好用

[root@DBSVR02 conf]# netstat -tlp

Active Internet connections (only servers)

Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name

tcp 0 0 *:50790 *:* LISTEN 1216/rpc.statd

tcp 0 0 *:sunrpc *:* LISTEN 1197/rpcbind

tcp 0 0 *:ssh *:* LISTEN 1474/sshd

tcp 0 0 localhost:ipp *:* LISTEN 1360/cupsd

tcp 0 0 localhost:smtp *:* LISTEN 1550/master

tcp 0 0 *:42855 *:* LISTEN 1216/rpc.statd

tcp 0 0 *:sunrpc *:* LISTEN 1197/rpcbind

tcp 0 0 *:http *:* LISTEN 1590/httpd

tcp 0 0 *:ssh *:* LISTEN 1474/sshd

tcp 0 0 localhost:ipp *:* LISTEN 1360/cupsd

tcp 0 0 localhost:smtp *:* LISTEN 1550/master

[root@DBSVR02 conf]#

转载于:https://www.cnblogs.com/simhare/archive/2013/05/01/3053534.html

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