MySQL Sniffer抓包入门

简介

MySQL Sniffer 是一个基于 MySQL 协议的抓包工具，实时抓取 MySQLServer 端或 Client 端请求，并格式化输出。输出内容包括访问时间、访问用户、来源 IP、访问 Database、命令耗时、返回数据行数、执行语句等。有批量抓取多个端口，后台运行，日志分割等多种使用方式，操作便捷，输出友好。

安装依赖包：

官方文档建议使用glib2-devel(2.28.8)、libpcap-devel(1.4.0)、libnet-devel(1.1.6)

本次以CentOS release 6.5 (Final)为例

$ yum install cmake
$ yum install  libpcap-devel
$ yum install  glib2-devel
$ yum install  libnet-devel

下载

github 地址：https://github.com/Qihoo360/mysql-sniffer

$  git clone https://github.com/Qihoo360/mysql-sniffer

编译

$ cd mysql-sniffer
$ mkdir proj
$ cd proj
$ cmake ../
$ make
$ cd bin/

使用

# # ./mysql-sniffer  -h
Usage ./mysql-sniffer [-d] -i eth0 -p 3306,3307,3308 -l /var/log/mysql-sniffer/ -e stderr
         [-d] -i eth0 -r 3000-4000
         -d daemon mode.
         -s how often to split the log file(minute, eg. 1440). if less than 0, split log everyday
         -i interface. Default to eth0
         -p port, default to 3306. Multiple ports should be splited by ','. eg. 3306,3307
            this option has no effect when -f is set.
         -r port range, Don't use -r and -p at the same time
         -l query log DIRECTORY. Make sure that the directory is accessible. Default to stdout.
         -e error log FILENAME or 'stderr'. if set to /dev/null, runtime error will not be recorded
         -f filename. use pcap file instead capturing the network interface
         -w white list. dont capture the port. Multiple ports should be splited by ','.
         -t truncation length. truncate long query if it's longer than specified length. Less than 0 means no truncation
         -n keeping tcp stream count, if not set, default is 65536. if active tcp count is larger than the specified count, mysql-sniffer will remove the oldest one

示例

1. 实时抓取某端口信息并打印到屏幕

输出格式为：时间，访问用户，来源 IP，访问 Database，命令耗时，返回数据行数，执行语句。

# mysql-sniffer -i eth0 -p 3306

2. 实时抓取某端口信息并打印到文件

-l 指定日志输出路径，日志文件将以 port.log 命名。

# mysql-sniffer -i eth0 -p 3306 -l /tmp

3. 实时抓取多个端口信息并打印到文件

-l 指定日志输出路径，-p 指定需要抓取的端口列表逗号分割。日志文件将以各自 port.log 命名。

# mysql-sniffer -i eth0 -p 3306,3307,3310 -l /tmp

补充说明：

抓包的时候是针对刚建立的链接抓取的报文，如果已经建立起来的链接无法获取执行sql