技术干货 | 如何查看MySQL数据库一段时间内的连接情况？两种方式来解锁~

mysql> set global general_log=ON;

[root@mgr2 ~]# mysql -uGreatSQL -pGreatSQL -h192.168.6.217 -P3306mysql> use test;mysql> show tables;+----------------+| Tables_in_test |+----------------+| book           || student        || t1             |+----------------+3 rows in set (.01 sec)
mysql> select * from t1;+------+--------+| id   | name   |+------+--------+|    1 | 哈哈   ||    2 | 你好   ||    3 | 呵呵   |+------+--------+5 rows in set (.00 sec)
mysql> delete from test.t1 where id=4;Query OK, 1 row affected (.02 sec)

2022-01-20T21:46:17.073491-05:00           32 Connect   GreatSQL@192.168.6.216 on  using TCP/IP2022-01-20T21:46:17.074048-05:00           32 Query     select @@version_comment limit 12022-01-20T21:46:20.217080-05:00           32 Query     SELECT DATABASE()2022-01-20T21:46:20.217657-05:00           32 Init DB   test2022-01-20T21:46:20.218960-05:00           32 Query     show databases2022-01-20T21:46:20.220347-05:00           32 Query     show tables2022-01-20T21:46:20.222050-05:00           32 Field List        book2022-01-20T21:46:20.222644-05:00           32 Field List        student2022-01-20T21:46:20.223106-05:00           32 Field List        t12022-01-20T21:46:22.856100-05:00           32 Query     show tables2022-01-20T21:46:31.156616-05:00           32 Query     select * from t12022-01-20T21:46:43.136448-05:00           32 Query     delete from test.t1 where id=4

yum install gcc gcc-c++ cmake libpcap-devel glib2-devel libnet-devel -y

git clone https://github.com/Qihoo360/mysql-sniffer.gitcd mysql-sniffermkdir projcd projcmake ../make

[root@mgr3 bin]# ./mysql-sniffer -helpUsage ./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 , 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

mysql> use test;Database changedmysql> create table t1 (id int(11) not null auto_increment, name varchar(64), primary key(id));Query OK,  rows affected (0.06 sec)
mysql> insert into t1 values (1,'小明'),(2,'小陈');Query OK, 2 rows affected (0.00 sec)Records: 2  Duplicates:   Warnings: 
mysql> delete from t1 where id=1;Query OK, 1 row affected (0.00 sec)
mysql> select * from t1;+----+--------+| id | name   |+----+--------+|  2 | 小陈   |+----+--------+1 row in set (0.00 sec)

2022-01-21 14:37:09      GreatSQL        192.168.6.216   NULL             0ms             1      select @@version_comment limit 12022-01-21 14:37:31      GreatSQL        192.168.6.216   NULL             ms             2      show databases2022-01-21 14:37:37      GreatSQL        192.168.6.216   NULL             ms             1      SELECT DATABASE()2022-01-21 14:37:37      GreatSQL        192.168.6.216   test             ms                   use test2022-01-21 14:37:37      GreatSQL        192.168.6.216   test             ms             2      show databases2022-01-21 14:37:37      GreatSQL        192.168.6.216   test            11ms                   show tables2022-01-21 14:41:58      GreatSQL        192.168.6.216   test            60ms                   create table t1 (id int(11) not null auto_increment, name varchar(64), primary key(id))2022-01-21 14:42:40      GreatSQL        192.168.6.216   test             ms             2      insert into t1 values (1,'小明'),(2,'小陈')2022-01-21 14:42:54      GreatSQL        192.168.6.216   test             ms             1      delete from t1 where id=12022-01-21 14:43:04      GreatSQL        192.168.6.216   test             ms             1      select * from t1

./mysql-sniffer -i eth1 -p 33061 -l ./

[root@mgr3 bin]# more 33061.log2022-01-21 15:00:11      NULL    192.168.6.216   test             0ms             0      use test2022-01-21 15:00:11      NULL    192.168.6.216   test             0ms             1      SELECT DATABASE()