(work)root@localhost:mysql3316.sock [(none)]>select * from thunder.tb1; +----+---------+ | id | name | +----+---------+ | 1 | test | | 4 | thun | | 5 | thunder | | 6 | thun | | 7 | thun | | 8 | thun | | 9 | test | +----+---------+ 7 rows in set (0.00 sec) (work)root@localhost:mysql3316.sock [(none)]>truncate table thunder.tb1; Query OK, 0 rows affected (0.02 sec) (work)root@localhost:mysql3316.sock [(none)]>insert into thunder.tb1(name) values('like'); Query OK, 1 row affected (0.00 sec) (work)root@localhost:mysql3316.sock [(none)]>insert into thunder.tb1(name) values('lik'); Query OK, 1 row affected (0.00 sec) (work)root@localhost:mysql3316.sock [(none)]>insert into thunder.tb1(name) values('li'); Query OK, 1 row affected (0.00 sec) (work)root@localhost:mysql3316.sock [(none)]>insert into thunder.tb1(name) values('l'); Query OK, 1 row affected (0.00 sec) (work)root@localhost:mysql3316.sock [(none)]>select * from thunder.tb1; +----+---------+ | id | name | +----+---------+ | 1 | test | | 4 | thun | | 5 | thunder | | 6 | thun | | 7 | thun | | 8 | thun | | 9 | test | | 10 | like | | 11 | lik | | 12 | li | | 13 | l | +----+---------+ 11 rows in set (0.00 sec)
1.3查看備份時binlog位置並找出誤操作語句的位置
[root@mysqlnode1 mysql3316]# grep MASTER thunder_full_2015112.sql -- CHANGE MASTER TO MASTER_LOG_FILE='mysql-bin.000003', MASTER_LOG_POS=25191; [root@mysqlnode1 ~]# mysql -S /tmp/mysql3316.sock -e "show binlog events in 'mysql-bin.000003'" |grep -i truncate mysql-bin.000003 1011 Query 1163316 1091 truncate mysql.db mysql-bin.000003 25239 Query 1163316 25328 truncate table thunder.tb11.4用mysqlbinlog命令在binlog中找出相關記錄
[root@mysqlnode1 mysql3316]# mysqlbinlog -v --base64-output=decode-rows /data/mysql/mysql3316/logs/mysql-bin.000003 >3.sql [root@mysqlnode1 mysql3316]# vim 3.sql # at 25191 #151122 19:59:50 server id 1163316 end_log_pos 25239 CRC32 0xac936e4e GTID [commit=yes] SET @@SESSION.GTID_NEXT= 'c009ae77-8def-11e5-ab11-000c29ea831c:78'/*!*/; # at 25239 #151122 19:59:50 server id 1163316 end_log_pos 25328 CRC32 0xd020ddc8 Query thread_id=175 exec_time=0 error_code=0 SET TIMESTAMP=1448193590/*!*/; truncate table thunder.tb1 /*!*/; # at 25328 #151122 20:00:50 server id 1163316 end_log_pos 25376 CRC32 0xa12c299c GTID [commit=yes] SET @@SESSION.GTID_NEXT= 'c009ae77-8def-11e5-ab11-000c29ea831c:79'/*!*/; # at 25376 #151122 20:00:50 server id 1163316 end_log_pos 25444 CRC32 0xaa7072db Query thread_id=175 exec_time=0 error_code=0 SET TIMESTAMP=1448193650/*!*/; BEGIN /*!*/; # at 25444 #151122 20:00:50 server id 1163316 end_log_pos 25496 CRC32 0xd45864c2 Table_map: `thunder`.`tb1` mapped to number 267 # at 25496 #151122 20:00:50 server id 1163316 end_log_pos 25541 CRC32 0x71343558 Write_rows: table id 267 flags: STMT_END_F ### INSERT INTO `thunder`.`tb1` ### SET ### @1=1 ### @2='like' # at 25541 #151122 20:00:50 server id 1163316 end_log_pos 25572 CRC32 0xd860159a Xid = 4442 COMMIT/*!*/;
經查看在備份前master status位置後緊跟truncate命令,而後是insert,所以不需要執行binlog增量恢復,只需要把insert的數據還原,此處如果有數據,在導入備份後還需要執行這條語句 mysqlbinlog --start-position=18311 --stop-position=19557 mysql-bin.000003 |mysql -S /tmp/mysql3316.sock thunder 其中--start-position為數據備份文件中的位置,--stop-position為誤操作前的位置 。 1.5新建一個數據庫thued,並還原之前thunder庫的備份 [root@mysqlnode1 mysql3316]# mysql -S /tmp/mysql3316.sock thued<thunder_full_2015112.sql 1.6在thued.tb1中插入新增加的數據,並查看
(work)root@localhost:mysql3316.sock [thued]>insert into tb1(name) select name from thunder.tb1; Query OK, 4 rows affected (0.00 sec) Records: 4 Duplicates: 0 Warnings: 0 (work)root@localhost:mysql3316.sock [thued]>select * from tb1; +----+---------+ | id | name | +----+---------+ | 1 | test | | 4 | thun | | 5 | thunder | | 6 | thun | | 7 | thun | | 8 | thun | | 9 | test | | 10 | like | | 11 | lik | | 12 | li | | 13 | l | +----+---------+ 11 rows in set (0.00 sec)
1.7刪除thunder.tb1,把thued.tb1改名成thunder.tb1
(work)root@localhost:mysql3316.sock [thued]>drop table thunder.tb1; Query OK, 0 rows affected (0.00 sec) (work)root@localhost:mysql3316.sock [thued]>rename table thued.tb1 to thunder.tb1; Query OK, 0 rows affected (0.00 sec) (work)root@localhost:mysql3316.sock [thued]>select * from thunder.tb1; +----+---------+ | id | name | +----+---------+ | 1 | test | | 4 | thun | | 5 | thunder | | 6 | thun | | 7 | thun | | 8 | thun | | 9 | test | | 10 | like | | 11 | lik | | 12 | li | | 13 | l | +----+---------+ 11 rows in set (0.00 sec)