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binlog2sql
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fix format

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danfengcao 2016-12-21 17:33:00 +08:00
parent cb6615d285
commit fc7b07852e
2 changed files with 17 additions and 17 deletions
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8
README.md
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@ -162,10 +162,10 @@ DELETE FROM `test`.`tbl` WHERE `addtime`='2016-12-13 20:25:00' AND `id`=3 AND `n
DELETE FROM `test`.`tbl` WHERE `addtime`='2016-12-12 00:00:00' AND `id`=4 AND `name`='小李' LIMIT 1; #start 728 end 938 time 2016-12-13 20:28:05 DELETE FROM `test`.`tbl` WHERE `addtime`='2016-12-12 00:00:00' AND `id`=4 AND `name`='小李' LIMIT 1; #start 728 end 938 time 2016-12-13 20:28:05
``` ```
3. 我们得到了误操作sql的准确位置在728-938之间，再根据位置进一步过滤，使用flashback模式生成回滚sql，检查回滚sql是否正确 3. 我们得到了误操作sql的准确位置在728-938之间，再根据位置进一步过滤，使用flashback模式生成回滚sql，检查回滚sql是否正确(注：真实环境下，此步经常会进一步筛选出需要的sql。结合grep、编辑器等)
```bash ```bash
shell> python binlog2sql/binlog2sql.py -h127.0.0.1 -P3306 -uadmin -p'admin' -dtest -ttbl --start-file='mysql-bin.000052' --start-pos=3346 --end-pos=3556 -B shell> python binlog2sql/binlog2sql.py -h127.0.0.1 -P3306 -uadmin -p'admin' -dtest -ttbl --start-file='mysql-bin.000052' --start-pos=3346 --end-pos=3556 -B > rollback.sql | cat
输出： 输出：
INSERT INTO `test`.`tbl`(`addtime`, `id`, `name`) VALUES ('2016-12-12 00:00:00', 4, '小李'); #start 728 end 938 time 2016-12-13 20:28:05 INSERT INTO `test`.`tbl`(`addtime`, `id`, `name`) VALUES ('2016-12-12 00:00:00', 4, '小李'); #start 728 end 938 time 2016-12-13 20:28:05
INSERT INTO `test`.`tbl`(`addtime`, `id`, `name`) VALUES ('2016-12-13 20:25:00', 3, '小孙'); #start 728 end 938 time 2016-12-13 20:28:05 INSERT INTO `test`.`tbl`(`addtime`, `id`, `name`) VALUES ('2016-12-13 20:25:00', 3, '小孙'); #start 728 end 938 time 2016-12-13 20:28:05
@ -173,10 +173,10 @@ INSERT INTO `test`.`tbl`(`addtime`, `id`, `name`) VALUES ('2016-12-10 00:04:48',
INSERT INTO `test`.`tbl`(`addtime`, `id`, `name`) VALUES ('2016-12-10 00:04:33', 1, '小赵'); #start 728 end 938 time 2016-12-13 20:28:05 INSERT INTO `test`.`tbl`(`addtime`, `id`, `name`) VALUES ('2016-12-10 00:04:33', 1, '小赵'); #start 728 end 938 time 2016-12-13 20:28:05
``` ```
3. 确认回滚sql正确，执行回滚语句。登录mysql确认，数据回滚成功。 4. 确认回滚sql正确，执行回滚语句。登录mysql确认，数据回滚成功。
```bash ```bash
shell> python binlog2sql.py -h127.0.0.1 -P3306 -uadmin -p'admin' -dtest -ttbl --start-file='mysql-bin.000052' --start-pos=3346 --end-pos=3556 -B | mysql -h127.0.0.1 -P3306 -uadmin -p'admin' shell> mysql -h127.0.0.1 -P3306 -uadmin -p'admin' < rollback.sql
mysql> select * from tbl; mysql> select * from tbl;
+----+--------+---------------------+ +----+--------+---------------------+

12
example/mysql-rollback-your-data.md
View File

@ -1,12 +1,12 @@
MySQL误操作后如何快速恢复数据 MySQL误操作后如何快速恢复数据
======================== ========================
基本上每个跟数据库打交道的程序员（当然也可能是你同事）都会碰一个问题，MySQL误操作后如何快速回滚？比如，delete一张表，忘加限制条件，整张表都没了。假如这还是线上环境核心业务数据，那这事就闹大了。误操作后，能快速回滚数据是非常重要的。 基本上每个跟数据库打交道的程序员（当然也可能是你同事）都会碰一个问题，MySQL误操作后如何快速回滚？比如，不小心update了整张表的某个字段，或者delete一张表，忘加限制条件，整张表都没了。假如这还是线上环境核心业务数据，那这事就闹大了。误操作后，能快速回滚数据是非常重要的。
传统解法 传统解法
=== ===
用全量备份重搭实例，再利用增量binlog备份，恢复到误操作之前的状态。然后跳过误操作的SQL，再继续应用binlog。此法费时费力，不值得再推荐。 用全量备份重搭实例，再利用增量binlog备份，恢复到误操作之前的状态。然后跳过误操作的SQL，再继续应用binlog。对于DML的回滚，此法费时费力，不值得再推荐。
利用binlog2sql快速闪回 利用binlog2sql快速闪回
=== ===
@ -79,10 +79,10 @@ DELETE FROM `test`.`tbl` WHERE `addtime`='2016-12-13 20:25:00' AND `id`=3 AND `n
DELETE FROM `test`.`tbl` WHERE `addtime`='2016-12-12 00:00:00' AND `id`=4 AND `name`='小李' LIMIT 1; #start 728 end 938 time 2016-12-13 20:28:05 DELETE FROM `test`.`tbl` WHERE `addtime`='2016-12-12 00:00:00' AND `id`=4 AND `name`='小李' LIMIT 1; #start 728 end 938 time 2016-12-13 20:28:05
``` ```
3. 我们得到了误操作sql的准确位置在728-938之间，再根据位置进一步过滤，使用flashback模式生成回滚sql，检查回滚sql是否正确 3. 我们得到了误操作sql的准确位置在728-938之间，再根据位置过滤，使用flashback模式生成回滚sql，检查回滚sql是否正确(注：真实环境下，此步经常会进一步筛选出需要的sql。结合grep、编辑器等)
```bash ```bash
shell> python binlog2sql/binlog2sql.py -h127.0.0.1 -P3306 -uadmin -p'admin' -dtest -ttbl --start-file='mysql-bin.000052' --start-pos=3346 --end-pos=3556 -B shell> python binlog2sql/binlog2sql.py -h127.0.0.1 -P3306 -uadmin -p'admin' -dtest -ttbl --start-file='mysql-bin.000052' --start-pos=3346 --end-pos=3556 -B > rollback.sql | cat
输出： 输出：
INSERT INTO `test`.`tbl`(`addtime`, `id`, `name`) VALUES ('2016-12-12 00:00:00', 4, '小李'); #start 728 end 938 time 2016-12-13 20:28:05 INSERT INTO `test`.`tbl`(`addtime`, `id`, `name`) VALUES ('2016-12-12 00:00:00', 4, '小李'); #start 728 end 938 time 2016-12-13 20:28:05
INSERT INTO `test`.`tbl`(`addtime`, `id`, `name`) VALUES ('2016-12-13 20:25:00', 3, '小孙'); #start 728 end 938 time 2016-12-13 20:28:05 INSERT INTO `test`.`tbl`(`addtime`, `id`, `name`) VALUES ('2016-12-13 20:25:00', 3, '小孙'); #start 728 end 938 time 2016-12-13 20:28:05
@ -90,10 +90,10 @@ INSERT INTO `test`.`tbl`(`addtime`, `id`, `name`) VALUES ('2016-12-10 00:04:48',
INSERT INTO `test`.`tbl`(`addtime`, `id`, `name`) VALUES ('2016-12-10 00:04:33', 1, '小赵'); #start 728 end 938 time 2016-12-13 20:28:05 INSERT INTO `test`.`tbl`(`addtime`, `id`, `name`) VALUES ('2016-12-10 00:04:33', 1, '小赵'); #start 728 end 938 time 2016-12-13 20:28:05
``` ```
3. 确认回滚sql正确，执行回滚语句。登录mysql确认，数据回滚成功。 4. 确认回滚sql正确，执行回滚语句。登录mysql确认，数据回滚成功。
```bash ```bash
shell> python binlog2sql.py -h127.0.0.1 -P3306 -uadmin -p'admin' -dtest -ttbl --start-file='mysql-bin.000052' --start-pos=3346 --end-pos=3556 -B | mysql -h127.0.0.1 -P3306 -uadmin -p'admin' shell> mysql -h127.0.0.1 -P3306 -uadmin -p'admin' < rollback.sql
mysql> select * from tbl; mysql> select * from tbl;
+----+--------+---------------------+ +----+--------+---------------------+