mysql中怎样配置general log

一般日志默认是关闭的(general_log_file默认在datadir下）：

mysql> show variables like '%general%';

+------------------+-------------------------------------+

| Variable_name    | Value                               |

+------------------+-------------------------------------+

| general_log      | OFF                                 |

| general_log_file | /data/server/mysql_3307/data/PC.log |

+------------------+-------------------------------------+

2 rows in set (0.00 sec)

在配置文件里添加：

log=/data/server/mysql_3307/data/pc2.log

重启数据库后，会看到general_log自动变成了ON.general_log_file也变成了刚设置的文件

mysql> show variables like '%general%';

+------------------+-------------------------------------+

| Variable_name    | Value                               |

+------------------+-------------------------------------+

| general_log      | ON                                |

| general_log_file | /data/server/mysql_3307/data/pc2.log |

+------------------+-------------------------------------+

2 rows in set (0.00 sec)

general_log会记录所有的数据库操作，如：

/usr/local/mysql/bin/mysqld, Version: 5.5.19-log (MySQL Community Server (GPL)). started with:
Tcp port: 3307  Unix socket: /tmp/mysql.sock
Time                 Id Command    Argument
160705 14:29:39     1 Query     create database dba2
160705 14:29:41     3 Connect   RepUser@10.192.203.202 on
3 Query     SET NAMES latin1
3 Query     SELECT UNIX_TIMESTAMP()
3 Query     SHOW VARIABLES LIKE 'SERVER_ID'
3 Query     SET @master_heartbeat_period= 1799999979520
3 Binlog Dump       Log: 'mysql-bin.000045'  Pos: 107
160705 14:29:42     4 Connect   root@localhost on
4 Query     show variables like '%log%'
160705 14:30:01     5 Connect   root@localhost on
5 Query     select @@version_comment limit 1
5 Query     show status
5 Quit

--这个参数也可以在线修改（set global general_log = off;），立即生效