my10_使用binlog2sql闪回DML操作

Posted 2020-12-27 每周向前一小步

下载
git clone https://github.com/danfengcao/binlog2sql.git

原理
使用python连接到指定的库，读取要恢复表的表结构和对应的binlog日志，在binlog 为row格式并且DML记录所有字段值的情况下，将set 与where后字段值对换位置，拼接成的SQL就是回滚SQL。

安装
unzip binlog2sql-master.zip
cd binlog2sql-master/
pip install -r requirements.txt

误操作
mysql -uautomng -p‘Automng_123‘ -P3319
update sbtest7 set pad=‘wa ka ka ‘ where id=3;
update sbtest8 set pad=‘wa ka ka ‘ where id=3;

mysql> show master statusG;
*************************** 1. row ***************************
File: mysql-bin.000035

# python binlog2sql.py -h127.0.0.1 -P3319 -uautomng -p‘Automng_123‘ -dtxdb -t sbtest7 sbtest8 --start-file=‘mysql-bin.000035‘ --start-datetime=‘2018-08-01 15:50:00‘ --stop-datetime=‘2018-08-01 16:01:00‘
UPDATE `txdb`.`sbtest7` SET `c`=‘39314051591-30329702885-35198042800-16393519874-56867884250-41805987558-63125675500-93376317385-90603675036-63992232134‘, `k`=149507, `pad`=‘wa ka ka‘, `id`=3 WHERE `c`=‘39314051591-30329702885-35198042800-16393519874-56867884250-41805987558-63125675500-93376317385-90603675036-63992232134‘ AND `k`=149507 AND `pad`=‘90728107484-01984250703-04244069858-02683578329-82506775849‘ AND `id`=3 LIMIT 1; #start 4 end 758 time 2018-08-01 16:00:12
UPDATE `txdb`.`sbtest8` SET `c`=‘22165230283-89382372870-64352117725-29359509089-24558560067-39564369546-34463527363-05997343623-26127428609-19766153460‘, `k`=202756, `pad`=‘wa ka ka‘, `id`=3 WHERE `c`=‘22165230283-89382372870-64352117725-29359509089-24558560067-39564369546-34463527363-05997343623-26127428609-19766153460‘ AND `k`=202756 AND `pad`=‘54879921302-82844293345-80647833951-55849410697-97809519145‘ AND `id`=3 LIMIT 1; #start 785 end 1393 time 2018-08-01 16:00:21

#start 4 end 758 time 2018-08-01 16:00:12
#start 785 end 1393 time 2018-08-01 16:00:21
# python binlog2sql.py --flashback -h127.0.0.1 -P3319 -uautomng -p‘Automng_123‘ -dtxdb -t sbtest7 sbtest8 --start-file=‘mysql-bin.000035‘ --start-position=4 --stop-position=1393
UPDATE `txdb`.`sbtest8` SET `c`=‘22165230283-89382372870-64352117725-29359509089-24558560067-39564369546-34463527363-05997343623-26127428609-19766153460‘, `k`=202756, `pad`=‘54879921302-82844293345-80647833951-55849410697-97809519145‘, `id`=3 WHERE `c`=‘22165230283-89382372870-64352117725-29359509089-24558560067-39564369546-34463527363-05997343623-26127428609-19766153460‘ AND `k`=202756 AND `pad`=‘wa ka ka‘ AND `id`=3 LIMIT 1; #start 785 end 1393 time 2018-08-01 16:00:21
UPDATE `txdb`.`sbtest7` SET `c`=‘39314051591-30329702885-35198042800-16393519874-56867884250-41805987558-63125675500-93376317385-90603675036-63992232134‘, `k`=149507, `pad`=‘90728107484-01984250703-04244069858-02683578329-82506775849‘, `id`=3 WHERE `c`=‘39314051591-30329702885-35198042800-16393519874-56867884250-41805987558-63125675500-93376317385-90603675036-63992232134‘ AND `k`=149507 AND `pad`=‘wa ka ka‘ AND `id`=3 LIMIT 1; #start 4 end 758 time 2018-08-01 16:00:12

 

回滚
python binlog2sql.py --flashback -h127.0.0.1 -P3319 -uautomng -p‘Automng_123‘ -dtxdb -t sbtest7 sbtest8 --start-file=‘mysql-bin.000035‘ --start-position=4 --stop-position=1393 > /tmp/rollback.sql | cat
事务号一定要看清楚并写对了，如果……如果不小心写错了一位数，你可以想象一下后果……
mysql -uautomng -p‘Automng_123‘ -P3319 txdb < /tmp/rollback.sql

在尝试通过远程的方式操作时，失败了，不知是不支持远程还是哪里遇到了问题，正在排查中……如果不能通过远程的方式操作，那么就需要提前在服务器上安装这个脚本。