使用 MYSQLBINLOG 来恢复数据。

今天在家里做了一下试验，终于搞明白了以前做复制的时候没有搞明白的问题。原来BINLOG就是一个记录SQL语句的过程，和普通的LOG一样。不过只是她是二进制存储，普通的是十进制存储罢了。

1、配置文件里要写的东西： [mysqld] log-bin=yueliangdao_binglog(名字可以改成自己的，如果不改名字的话，默认是以主机名字命名)重新启动MSYQL服务。 二进制文件里面的东西显示的就是执行所有语句的详细记录，当然一些语句不被记录在内，要了解详细的，见手册页。

2、查看自己的BINLOG的名字是什么。 show binlog events;

query result(1 records)

Log_name Pos Event_type Server_id End_log_pos Info

yueliangdao_binglog.000001 4 Format_desc 1 106 Server ver: 5.1.22-rc-community-log, Binlog ver: 4

3、我做了几次操作后，她就记录了下来。 又一次 show binlog events 的结果。 query result(4 records) Log_name Pos Event_type Server_id End_log_pos Info yueliangdao_binglog.000001 4 Format_desc 1 106 Server ver: 5.1.22-rc-community-log, Binlog ver: 4 yueliangdao_binglog.000001 106 Intvar 1 134 INSERT_ID=1 yueliangdao_binglog.000001 134 Query 1 254 use `test`; create table a1(id int not null auto_increment primary key, str varchar(1000)) engine=myisam yueliangdao_binglog.000001 254 Query 1 330 use `test`; insert into a1(str) values ('I love you'),('You love me') yueliangdao_binglog.000001 330 Query 1 485 use `test`; drop table a1

4、用mysqlbinlog 工具来显示记录的二进制结果，然后导入到文本文件，为了以后的恢复。 详细过程如下： D:\LAMP\MYSQL5\data>mysqlbinlog --start-position=4 --stop-position=106 yueliangd ao_binglog.000001 > c:\\test1.txt test1.txt的文件内容： /*!40019 SET @@session.max_insert_delayed_threads=0*/; /*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/; DELIMITER /*!*/; # at 4 #7122 16:9:18 server id 1 end_log_pos 106 Start: binlog v 4, server v 5.1.22-rc-community-log created 7122 16:9:18 at startup # Warning: this binlog was not closed properly. Most probably mysqld crashed writing it. ROLLBACK/*!*/; DELIMITER ; # End of log file ROLLBACK /* added by mysqlbinlog */; /*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/; 第二行的记录： D:\LAMP\MYSQL5\data>mysqlbinlog --start-position=106 --stop-position=134 yuelian gdao_binglog.000001 > c:\\test1.txt test1.txt内容如下： /*!40019 SET @@session.max_insert_delayed_threads=0*/; /*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/; DELIMITER /*!*/; # at 106 #7122 16:22:36 server id 1 end_log_pos 134 Intvar SET INSERT_ID=1/*!*/; DELIMITER ; # End of log file ROLLBACK /* added by mysqlbinlog */; /*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/; 第三行记录： D:\LAMP\MYSQL5\data>mysqlbinlog --start-position=134 --stop-position=254 yuelian gdao_binglog.000001 > c:\\test1.txt 内容： /*!40019 SET @@session.max_insert_delayed_threads=0*/; /*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/; DELIMITER /*!*/; # at 134 #7122 16:55:31 server id 1 end_log_pos 254 Query thread_id=1 exec_time=0 error_code=0 use test/*!*/; SET TIMESTAMP=1196585731/*!*/; SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1/*!*/; SET @@session.sql_mode=1344274432/*!*/; /*!\C utf8 *//*!*/; SET @@session.character_set_client=33,@@session.collation_connection=33,@@session.collation_server=33/*!*/; create table a1(id int not null auto_increment primary key, str varchar(1000)) engine=myisam/*!*/; DELIMITER ; # End of log file ROLLBACK /* added by mysqlbinlog */; /*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/; /*!40019 SET @@session.max_insert_delayed_threads=0*/; 第四行的记录： D:\LAMP\MYSQL5\data>mysqlbinlog --start-position=254 --stop-position=330 yuelian gdao_binglog.000001 > c:\\test1.txt /*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/; DELIMITER /*!*/; # at 254 #7122 16:22:36 server id 1 end_log_pos 330 Query thread_id=1 exec_time=0 error_code=0 use test/*!*/; SET TIMESTAMP=1196583756/*!*/; SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=1, @@session.unique_checks=1/*!*/; SET @@session.sql_mode=1344274432/*!*/; /*!\C utf8 *//*!*/; SET @@session.character_set_client=33,@@session.collation_connection=33,@@session.collation_server=33/*!*/; use `test`; insert into a1(str) values ('I love you'),('You love me')/*!*/; DELIMITER ; # End of log file ROLLBACK /* added by mysqlbinlog */; /*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;

5、查看这些东西是为了恢复数据，而不是为了好玩。所以我们最中还是为了要导入结果到MYSQL中。 D:\LAMP\MYSQL5\data>mysqlbinlog --start-position=134 --stop-position=330 yuelian gdao_binglog.000001 | mysql -uroot -p

或者 D:\LAMP\MYSQL5\data>mysqlbinlog --start-position=134 --stop-position=330 yuelian gdao_binglog.000001 >test1.txt 进入MYSQL导入 mysql> source c:\\test1.txt Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Database changed Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Charset changed Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.03 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec)

6、查看数据： mysql> show tables; +----------------+ | Tables_in_test | +----------------+ | a1 | +----------------+ 1 row in set (0.01 sec) mysql> select * from a1; +----+-------------+ | id | str | +----+-------------+ | 1 | I love you | | 2 | You love me | +----+-------------+ 2 rows in set (0.00 sec)