mysql MyFlash使用

2022-07-31 18:43:54

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  mysql MyFlash使用：

一.安装MyFlash
1.安装条件
binlog_format=ROW
binlog_row_image=FULL
仅支持5.6与5.7，并且只能回滚DML

2.安装
unzip MyFlash.zip
yum -y install glib2*
cd /data/MyFlash/MyFlash-master
gcc -w `pkg-config --cflags --libs glib-2.0` source/binlogParseGlib.c -o binary/flashback
*没有报错，证明安装成功

二.恢复场景
1.回滚整个文件
./flashback --binlogFileNames=haha.000041
mysqlbinlog binlog_output_base.flashback | mysql -h -u -p

2.回滚某个表的DML语句
-删除数据
mysql> show tables;
+---------------+
| Tables_in_wwj |
+---------------+
| t1            |
+---------------+
1 row in set (0.00 sec)

mysql> select * from t1;
+----+------+
| id | name |
+----+------+
| 5 | haha |
| 6 | mxt3 |
| 7 | mxt4 |
+----+------+
3 rows in set (0.00 sec)

mysql> delete from t1;
Query OK, 3 rows affected (0.02 sec)

mysql> select * from t1;
Empty set (0.00 sec)

-生成恢复文件(回滚t1表的delete操作)
cd /data/MyFlash/MyFlash-master/binary
# ./flashback --databaseNames='wwj' --tableNames='t1' --sqlTypes='DELETE' --binlogFileNames=/home/mysql3307/mysql3307/mysql-bin.000001

-查看文件
# /usr/local/mysql/bin/mysqlbinlog -vv binlog_output_base.flashback

-恢复
# /usr/local/mysql/bin/mysqlbinlog binlog_output_base.flashback|/usr/local/mysql/bin/mysql -S /tmp/mysql3307.sock -p
恢复完成
mysql> select * from t1;
+----+------+
| id | name |
+----+------+
| 5 | haha |
| 6 | mxt3 |
| 7 | mxt4 |
+----+------+
3 rows in set (0.00 sec)

3.恢复一段时间的binlog

-生成数据
[root@mysql5 mysql3307]# date
Thu Mar 29 05:41:00 CST 2018
insert into wwj.t3 values(4,'mxt2');
insert into wwj.t3 values(5,'mxt3');
insert into wwj.t3 values(6,'mxt4');
[root@mysql5 mysql3307]# date
Thu Mar 29 05:41:37 CST 2018
delete from wwj.t3;
[root@mysql5 mysql3307]# date
Thu Mar 29 05:42:57 CST 2018

- 回滚2018-03-29 05:41:37~2018-03-29 05:42:57 之间的操作
- 查看binlog
# /usr/local/mysql/bin/mysqlbinlog --start-datetime='2018-03-29 05:41:37' --stop-datetime='2018-03-29 05:42:57' mysql-bin.000001 --base64-output=decode-rows -v
- 生成恢复文件
./flashback --databaseNames='wwj' --start-datetime='2018-03-29 05:41:37' --stop-datetime='2018-03-29 05:42:57' --binlogFileNames=/home/mysql3307/mysql3307/mysql-bin.000001
- 查看回滚文件
# /usr/local/mysql/bin/mysqlbinlog -vv binlog_output_base.flashback
- 执行回滚
/usr/local/mysql/bin/mysqlbinlog binlog_output_base.flashback|/usr/local/mysql/bin/mysql -S /tmp/mysql3307.sock -p
- 查看恢复结果
mysql> select * from wwj.t3;
ERROR 2006 (HY000): MySQL server has gone away
No connection. Trying to reconnect...
Connection id:    8
Current database: *** NONE ***
+----+------+
| id | name |
+----+------+
| 4 | mxt2 |
| 5 | mxt3 |
| 6 | mxt4 |
+----+------+

3.恢复一段position的binlog文件
- 生成数据
insert into wwj.t3 values(4,'mxt2');
insert into wwj.t3 values(5,'mxt3');
insert into wwj.t3 values(6,'mxt4');
insert into wwj.t2 values(4,'mxt2');
insert into wwj.t2 values(5,'mxt3');
insert into wwj.t2 values(6,'mxt4');
insert into wwj.t1 values(4,'mxt2');
insert into wwj.t1 values(5,'mxt3');
insert into wwj.t1 values(6,'mxt4');

mysql> delete from wwj.t3;
Query OK, 3 rows affected (0.01 sec)
mysql> delete from wwj.t2;
Query OK, 3 rows affected (0.01 sec)
mysql> delete from wwj.t1;
Query OK, 3 rows affected (0.00 sec)

-查看binlog
/usr/local/mysql/bin/mysqlbinlog mysql-bin.000001 --base64-output=decode-rows -v

-确认恢复 mysql-bin.000001 position 1823~2487，生成恢复文件
# ./flashback --databaseNames='wwj' --start-position=1823 --stop-position=2487 --binlogFileNames=/home/mysql3307/mysql3307/mysql-bin.000001

- 查看回滚文件
# /usr/local/mysql/bin/mysqlbinlog -vv binlog_output_base.flashback

- 执行回滚
/usr/local/mysql/bin/mysqlbinlog binlog_output_base.flashback|/usr/local/mysql/bin/mysql -S /tmp/mysql3307.sock -p

-查看数据
mysql> select * from wwj.t1;
ERROR 2006 (HY000): MySQL server has gone away
No connection. Trying to reconnect...
Connection id:    17
Current database: *** NONE ***
+----+------+
| id | name |
+----+------+
| 4 | mxt2 |
| 7 | mxt2 |
| 5 | mxt3 |
| 8 | mxt3 |
| 6 | mxt4 |
| 9 | mxt4 |
+----+------+
6 rows in set (0.00 sec)

mysql> select * from wwj.t2;
+----+------+
| id | name |
+----+------+
| 4 | mxt2 |
| 5 | mxt3 |
| 6 | mxt4 |
+----+------+
3 rows in set (0.00 sec)

mysql> select * from wwj.t3;
+----+------+
| id | name |
+----+------+
| 4 | mxt2 |
| 5 | mxt3 |
| 6 | mxt4 |
+----+------+
3 rows in set (0.00 sec)

三.相关参数
点击(此处)折叠或打开

Application Options:
--databaseNames databaseName to apply. if multiple, seperate by comma(,)
--tableNames tableName to apply. if multiple, seperate by comma(,)
--start-position start position
--stop-position stop position
--start-datetime start time (format %Y-%m-%d %H:%M:%S)
--stop-datetime stop time (format %Y-%m-%d %H:%M:%S)
--sqlTypes sql type to filter . support INSERT, UPDATE ,DELETE. if multiple, seperate by comma(,)
--maxSplitSize max file size after split, the uint is M
--binlogFileNames binlog files to process. if multiple, seperate by comma(,)
--outBinlogFileNameBase output binlog file name base
--logLevel log level, available option is debug,warning,error
--include-gtids gtids to process
--exclude-gtids gtids to skip

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