如何利用MySQL的binlog恢复误删数据库详解_Mysql_

 [root@localhost ~]# mysqldump -u root -p t > /mnt/t.sql Enter password: [root@localhost ~]# ll /mnt/t.sql -rw-r--r-- 1 root root 1771 Aug 25 11:56 /mnt/t.sql 

 mysql> show variables like "%log_bin%"; 

 mysql> insert into t1 values (3); Query OK, 1 row affected (0.00 sec) mysql> insert into t1 values (4); Query OK, 1 row affected (0.00 sec) mysql> insert into t1 values (5); Query OK, 1 row affected (0.00 sec) mysql> select * from t1; +------+ | id | +------+ | 1 | | 2 | | 5 | | 4 | | 3 | +------+ 5 rows in set (0.00 sec) mysql> flush logs; Query OK, 0 rows affected (0.00 sec) mysql> show master status; +------------------+----------+--------------+------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | +------------------+----------+--------------+------------------+ | mysql_bin.000003 | 106 | | | +------------------+----------+--------------+------------------+ 1 row in set (0.00 sec) 

 mysql> truncate t1; Query OK, 0 rows affected (0.00 sec) mysql> select * from t1; Empty set (0.00 sec) 

 mysql> drop table t1; Query OK, 0 rows affected (0.00 sec) mysql> show tables; Empty set (0.00 sec) 

 mysql> source /mnt/t.sql; Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.01 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 2 rows affected (0.00 sec) Records: 2 Duplicates: 0 Warnings: 0 Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) mysql> show tables; +-------------+ | Tables_in_t | +-------------+ | t1 | +-------------+ 1 row in set (0.00 sec) mysql> select * from t1; +------+ | id | +------+ | 1 | | 2 | +------+ 2 rows in set (0.00 sec) 

 [root@localhost ~]# mysqlbinlog --no-defaults /var/lib/mysql/mysql_bin.000002 | mysql -u root -p123.com t 

 mysql> use t; Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed mysql> select * from t1; +------+ | id | +------+ | 1 | | 2 | | 3 | | 4 | | 5 | +------+ 5 rows in set (0.00 sec) mysql>

 mysqldump -uroot -p123456 test -l -F '/tmp/test.sql' -l:读锁（只能读取，不能更新） -F:即flush logs，可以重新生成新的日志文件，当然包括log-bin日志 

 mysql>show master status; 

 mysql -uroot -p t -v -f 

 mysqlbinlog --no-defaults binlog-file | mysql -uroot -p t 

 mysqlbinlog --no-defaults --stop-position="367" mysql-bin.000001| mysql -uroot -p t 

 [root@localhost mysql]# /usr/bin/mysqlbinlog --no-defaults mysql-bin.000002 --start-position="794" --stop-position="1055" | more 

 [root@localhost mysql]# /usr/bin/mysqlbinlog --no-defaults mysql-bin.000002 --start-position="794" --stop-position="1055" | /usr/bin/mysql -uroot -p t 

 mysql> reset master; Query OK, 0 rows affected (0.01 sec) mysql> show master status; +------------------+----------+--------------+------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | +------------------+----------+--------------+------------------+ | mysql-bin.000001 | 106 | | | +------------------+----------+--------------+------------------+ 

 mysql> flush logs;#关闭当前的二进制日志文件并创建一个新文件，新的二进制日志文件的名字在当前的二进制文件的编号上加1。