利用binlog2sql快速閃回誤刪除數據
binlog2sql工具的下載地址： https://github.com/danfengcao/binlog2sql
第一步：環境準備安裝各種依賴的工具包列表
python-pip ，
PyMySQL ，
python-mysql-replication，
wheel argparse
第二步：解壓binlog2sql軟件，命令如下
unzip binlog2sql-master.zip
cd binlog2sql-master
pip install –r requirements.txt第三步：通過python binlog2sql.py --help命令，來查看重要參數的使用;
-B, --flashback 生成回滾語句
--start-position 解析binlog的起始位置
--stop-position解析binlog的結束位置
--start-datetime 從哪個時間點的binlog開始解析，格式必須為datetime
--stop-datetime 到哪個時間點的binlog停止解析，格式必須為datetime
-d, --databases 只輸出目標db的sql
-t, --tables 只輸出目標tables的sql
第四步：開始模擬數據刪除
首先刪除掉zs庫下，t表中的數據
[email protected] 14:26: [zs]> select * from t; +----+------+---------+ | id | name | address | +----+------+---------+ | 1 | aaa | bj | | 2 | bbb | sh | | 3 | ccc | gz | | 4 | ddd | sy | | 5 | eee | fj | +----+------+---------+ 5 rows in set (0.00 sec) [email protected] 14:26: [zs]> delete from t; Query OK, 5 rows affected (0.04 sec) [email protected] 14:27: [zs]> select * from t; Empty set (0.00 sec)
第五步：需要創建一個閃回用戶
create user ‘zs_test‘@‘%‘ identified by ‘123456‘;
grant select,replication slave,replication client on *.* to ‘zs_test‘@‘%‘ ;
flush privileges;第六步：確定當前binlog文件和position位置
[email protected] 14:41: [zs]> show master status; +---------------------+----------+--------------+------------------+------------------------------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set | +---------------------+----------+--------------+------------------+------------------------------------------+ | mysql-binlog.000002 | 2091 | | | e10f0ead-d595-11e7-82cb-080027cd683a:1-8 | +---------------------+----------+--------------+------------------+------------------------------------------+
可以看到當前binlog是：mysql-binlog.000002
位置偏移量：2091
第七步：需要預估下時間，誤操作的時間範圍應該在下午2點20分到2點30分之間。命令如下：
python binlog2sql.py -h192.168.56.102 -P3306 -uzs_test -p123456 -dzs -tt --start-file=‘mysql-binlog.000002‘ --start-datetime=‘2017-11-30 14:20:00‘ --stop-datetime=‘2017-11-30 14:30:00‘
輸出結果：
DELETE FROM zs.t WHERE address=‘bj‘ AND id=1 AND name=‘aaa‘ LIMIT 1; #start 1214 end 1427 time 2017-11-30 14:27:46
DELETE FROM zs.t WHERE address=‘sh‘ AND id=2 AND name=‘bbb‘ LIMIT 1; #start 1214 end 1427 time 2017-11-30 14:27:46
DELETE FROM zs.t WHERE address=‘gz‘ AND id=3 AND name=‘ccc‘ LIMIT 1; #start 1214 end 1427 time 2017-11-30 14:27:46
DELETE FROM zs.t WHERE address=‘sy‘ AND id=4 AND name=‘ddd‘ LIMIT 1; #start 1214 end 1427 time 2017-11-30 14:27:46
DELETE FROM zs.t WHERE address=‘fj‘ AND id=5 AND name=‘eee‘ LIMIT 1; #start 1214 end 1427 time 2017-11-30 14:27:46從解析結果中我們了解到，誤操作sql的位置是在1214~1427之間;這樣就可以進一步過濾，使用flashback模式生成回滾sql；
命令如下：
python binlog2sql.py -h192.168.56.102 -P3306 -uzs_test -p123456 -dzs -tt --start-file=‘mysql-binlog.000002‘ --start-position=1214 --stop-position=1427 -B >t_rollback.sql
查看閃回導出文件：
[[email protected] binlog2sql]# cat t_rollback.sql
INSERT INTO zs.t(address, id, name) VALUES (‘fj‘, 5, ‘eee‘); #start 1214 end 1427 time 2017-11-30 14:27:46
INSERT INTO zs.t(address, id, name) VALUES (‘sy‘, 4, ‘ddd‘); #start 1214 end 1427 time 2017-11-30 14:27:46
INSERT INTO zs.t(address, id, name) VALUES (‘gz‘, 3, ‘ccc‘); #start 1214 end 1427 time 2017-11-30 14:27:46
INSERT INTO zs.t(address, id, name) VALUES (‘sh‘, 2, ‘bbb‘); #start 1214 end 1427 time 2017-11-30 14:27:46
INSERT INTO zs.t(address, id, name) VALUES (‘bj‘, 1, ‘aaa‘); #start 1214 end 1427 time 2017-11
第八步：應用回滾文件，恢復數據。命令如下：
/usr/local/mysql/bin/mysql -uroot -proot123 zs < t_rollback.sql
第九步：檢驗恢復數據是否成功
[email protected] 15:09: [zs]> select * from t;
+----+------+---------+
| id | name | address |
+----+------+---------+
| 1 | aaa | bj |
| 2 | bbb | sh |
| 3 | ccc | gz |
| 4 | ddd | sy |
| 5 | eee | fj |
+----+------+---------+
5 rows in set (0.00 sec)
驗證恢復數據成功！
利用binlog2sql快速閃回誤刪除數據