一、备份数据库
----清空一下日志 mysql> reset master; Query OK, 0 rows affected (0.02 sec) ----查看一下echo表的存储引擎 mysql> show table status like 'echo' G; *************************** 1. row *************************** Name: echo Engine: InnoDB Version: 10 Row_format: Compact Rows: 3 Avg_row_length: 5461 Data_length: 16384 Max_data_length: 0 Index_length: 0 Data_free: 94371840 Auto_increment: NULL Create_time: 2013-09-23 16:45:31 Update_time: NULL Check_time: NULL Collation: utf8_general_ci Checksum: NULL Create_options: Comment: 1 row in set (0.00 sec) ERROR: No query specified ----开始备份 [root@rhel5 dump]# mysqldump -u root -p --skip-opt --quick --extended-insert=false --single-transaction --master-data=2 --databases jack > /mysql/mysql5.5/dump/echo.sql Enter password: [root@rhel5 dump]# ll 总计 4 -rw-r--r-- 1 root root 1558 09-23 21:47 echo.sql ---查看备份出来的sql [root@rhel5 dump]# more echo.sql -- MySQL dump 10.13 Distrib 5.5.22, for Linux (i686) -- -- Host: localhost Database: jack -- ------------------------------------------------------ -- Server version 5.5.22-log /*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */; /*!40103 SET TIME_ZONE='+00:00' */; /*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */; /*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */; /*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */; /*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */; -- -- Position to start replication or point-in-time recovery from -- -- CHANGE MASTER TO MASTER_LOG_FILE='mysql-bin.000001', MASTER_LOG_POS=107; -- -- Current Database: `jack` -- CREATE DATABASE /*!32312 IF NOT EXISTS*/ `jack` /*!40100 DEFAULT CHARACTER SET utf8 */; USE `jack`; -- -- Table structure for table `echo` -- /*!40101 SET @saved_cs_client = @@character_set_client */; /*!40101 SET character_set_client = utf8 */; CREATE TABLE `echo` ( `id` int(11) DEFAULT NULL, `msg` varchar(100) DEFAULT NULL ); /*!40101 SET character_set_client = @saved_cs_client */; -- -- Dumping data for table `echo` -- INSERT INTO `echo` VALUES (1,'aaa'); INSERT INTO `echo` VALUES (1,'bbb'); INSERT INTO `echo` VALUES (1,'人'); /*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */; /*!40101 SET SQL_MODE=@OLD_SQL_MODE */; /*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */; /*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */; /*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */; -- Dump completed on 2013-09-23 21:47:55
二、对表进行修改，然后删除
----插入一下内容 mysql> insert into echo values(4,'ccc'); Query OK, 1 row affected (0.02 sec) mysql> insert into echo values(5,'ddd'); Query OK, 1 row affected (0.01 sec) mysql> select * from echo; +------+------+ | id | msg | +------+------+ | 1 | aaa | | 1 | bbb | | 1 | 人 | | 4 | ccc | | 5 | ddd | +------+------+ 5 rows in set (0.00 sec) mysql> drop table echo; Query OK, 0 rows affected (0.02 sec) mysql> select * from echo; ERROR 1146 (42S02): Table 'jack.echo' doesn't exist
三、查看表删除的位置
mysql> show binary logs; +------------------+-----------+ | Log_name | File_size | +------------------+-----------+ | mysql-bin.000001 | 593 | +------------------+-----------+ 1 row in set (0.00 sec) mysql> flush logs; Query OK, 0 rows affected (0.01 sec) mysql> show binlog events; +------------------+-----+-------------+-----------+-------------+---------------------------------------------------------+ | Log_name | Pos | Event_type | Server_id | End_log_pos | Info | +------------------+-----+-------------+-----------+-------------+---------------------------------------------------------+ | mysql-bin.000001 | 4 | Format_desc | 1 | 107 | Server ver: 5.5.22-log, Binlog ver: 4 | | mysql-bin.000001 | 107 | Query | 1 | 175 | BEGIN | | mysql-bin.000001 | 175 | Query | 1 | 270 | use `jack`; insert into echo values(4,'ccc') | | mysql-bin.000001 | 270 | Xid | 1 | 297 | COMMIT /* xid=176 */ | | mysql-bin.000001 | 297 | Query | 1 | 365 | BEGIN | | mysql-bin.000001 | 365 | Query | 1 | 460 | use `jack`; insert into echo values(5,'ddd') | | mysql-bin.000001 | 460 | Xid | 1 | 487 | COMMIT /* xid=177 */ | | mysql-bin.000001 | 487 | Query | 1 | 593 | use `jack`; DROP TABLE `echo` /* generated by server */ | | mysql-bin.000001 | 593 | Rotate | 1 | 636 | mysql-bin.000002;pos=4 | +------------------+-----+-------------+-----------+-------------+---------------------------------------------------------+ 9 rows in set (0.00 sec) ----从上面可以看出drop table 是在487---- mysql> show binary logs; +------------------+-----------+ | Log_name | File_size | +------------------+-----------+ | mysql-bin.000001 | 636 | | mysql-bin.000002 | 107 | +------------------+-----------+ 2 rows in set (0.00 sec) mysql> show binlog events in 'mysql-bin.000001' G; *************************** 1. row *************************** Log_name: mysql-bin.000001 Pos: 4 Event_type: Format_desc Server_id: 1 End_log_pos: 107 Info: Server ver: 5.5.22-log, Binlog ver: 4 *************************** 2. row *************************** Log_name: mysql-bin.000001 Pos: 107 Event_type: Query Server_id: 1 End_log_pos: 175 Info: BEGIN *************************** 3. row *************************** Log_name: mysql-bin.000001 Pos: 175 Event_type: Query Server_id: 1 End_log_pos: 270 Info: use `jack`; insert into echo values(4,'ccc') *************************** 4. row *************************** Log_name: mysql-bin.000001 Pos: 270 Event_type: Xid Server_id: 1 End_log_pos: 297 Info: COMMIT /* xid=176 */ *************************** 5. row *************************** Log_name: mysql-bin.000001 Pos: 297 Event_type: Query Server_id: 1 End_log_pos: 365 Info: BEGIN *************************** 6. row *************************** Log_name: mysql-bin.000001 Pos: 365 Event_type: Query Server_id: 1 End_log_pos: 460 Info: use `jack`; insert into echo values(5,'ddd') *************************** 7. row *************************** Log_name: mysql-bin.000001 Pos: 460 Event_type: Xid Server_id: 1 End_log_pos: 487 Info: COMMIT /* xid=177 */ *************************** 8. row *************************** Log_name: mysql-bin.000001 Pos: 487 Event_type: Query Server_id: 1 End_log_pos: 593 Info: use `jack`; DROP TABLE `echo` /* generated by server */ *************************** 9. row *************************** Log_name: mysql-bin.000001 Pos: 593 Event_type: Rotate Server_id: 1 End_log_pos: 636 Info: mysql-bin.000002;pos=4 9 rows in set (0.00 sec) ERROR: No query specified
四、查看备份的位置
[root@rhel5 dump]# more echo.sql -- MySQL dump 10.13 Distrib 5.5.22, for Linux (i686) -- -- Host: localhost Database: jack -- ------------------------------------------------------ -- Server version 5.5.22-log /*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */; /*!40103 SET TIME_ZONE='+00:00' */; /*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */; /*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */; /*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */; /*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */; -- -- Position to start replication or point-in-time recovery from -- -- CHANGE MASTER TO MASTER_LOG_FILE='mysql-bin.000001', MASTER_LOG_POS=107; -- -- Current Database: `jack` -- CREATE DATABASE /*!32312 IF NOT EXISTS*/ `jack` /*!40100 DEFAULT CHARACTER SET utf8 */; USE `jack`; -- -- Table structure for table `echo` -- /*!40101 SET @saved_cs_client = @@character_set_client */; /*!40101 SET character_set_client = utf8 */; CREATE TABLE `echo` ( `id` int(11) DEFAULT NULL, `msg` varchar(100) DEFAULT NULL ); /*!40101 SET character_set_client = @saved_cs_client */; -- -- Dumping data for table `echo` -- INSERT INTO `echo` VALUES (1,'aaa'); INSERT INTO `echo` VALUES (1,'bbb'); INSERT INTO `echo` VALUES (1,'人'); /*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */; /*!40101 SET SQL_MODE=@OLD_SQL_MODE */; /*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */; /*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */; /*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */; -- Dump completed on 2013-09-23 21:47:55 [root@rhel5 dump]# grep "CHANGE MASTER" ./echo.sql -- CHANGE MASTER TO MASTER_LOG_FILE='mysql-bin.000001', MASTER_LOG_POS=107;
五、还原数据库
mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | jack | | mysql | | performance_schema | | test | +--------------------+ 5 rows in set (0.01 sec) ----因为没有测试库，所以只能把jack数据库给删除掉 mysql> drop database jack; Query OK, 0 rows affected (0.02 sec) ----还原数据库 [root@rhel5 dump]# mysql -u root -p < ./echo.sql Enter password: mysql> use jack 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> show tables; +----------------+ | Tables_in_jack | +----------------+ | echo | +----------------+ 1 row in set (0.00 sec) ---已经还原到表被修改之前 mysql> select * from echo; +------+------+ | id | msg | +------+------+ | 1 | aaa | | 1 | bbb | | 1 | 人 | +------+------+ 3 rows in set (0.01 sec) mysql> show binary logs; +------------------+-----------+ | Log_name | File_size | +------------------+-----------+ | mysql-bin.000001 | 636 | | mysql-bin.000002 | 1065 | +------------------+-----------+ 2 rows in set (0.00 sec) mysql> show binlog events in 'mysql-bin.000002'; +------------------+------+-------------+-----------+-------------+----------------------------------------------------------------------------------------------------+ | Log_name | Pos | Event_type | Server_id | End_log_pos | Info | +------------------+------+-------------+-----------+-------------+----------------------------------------------------------------------------------------------------+ | mysql-bin.000002 | 4 | Format_desc | 1 | 107 | Server ver: 5.5.22-log, Binlog ver: 4 | | mysql-bin.000002 | 107 | Query | 1 | 188 | drop database jack | | mysql-bin.000002 | 188 | Query | 1 | 337 | CREATE DATABASE /*!32312 IF NOT EXISTS*/ `jack` /*!40100 DEFAULT CHARACTER SET utf8 */ | | mysql-bin.000002 | 337 | Query | 1 | 486 | use `jack`; CREATE TABLE `echo` ( `id` int(11) DEFAULT NULL, `msg` varchar(100) DEFAULT NULL ) | | mysql-bin.000002 | 486 | Query | 1 | 554 | BEGIN | | mysql-bin.000002 | 554 | Query | 1 | 652 | use `jack`; INSERT INTO `echo` VALUES (1,'aaa') | | mysql-bin.000002 | 652 | Xid | 1 | 679 | COMMIT /* xid=206 */ | | mysql-bin.000002 | 679 | Query | 1 | 747 | BEGIN | | mysql-bin.000002 | 747 | Query | 1 | 845 | use `jack`; INSERT INTO `echo` VALUES (1,'bbb') | | mysql-bin.000002 | 845 | Xid | 1 | 872 | COMMIT /* xid=207 */ | | mysql-bin.000002 | 872 | Query | 1 | 940 | BEGIN | | mysql-bin.000002 | 940 | Query | 1 | 1038 | use `jack`; INSERT INTO `echo` VALUES (1,'人') | | mysql-bin.000002 | 1038 | Xid | 1 | 1065 | COMMIT /* xid=208 */ | +------------------+------+-------------+-----------+-------------+----------------------------------------------------------------------------------------------------+ 13 rows in set (0.00 sec)
六、恢复数据库
[root@rhel5 data]# mysqlbinlog -u root -p --start-position=107 --stop-position=487 -vv ./mysql-bin.000001 | mysql -u root -p Enter password: Enter password: 123456 mysql> select * from echo; +------+------+ | id | msg | +------+------+ | 1 | aaa | | 1 | bbb | | 1 | 人 | | 4 | ccc | | 5 | ddd | +------+------+ 5 rows in set (0.00 sec)