實踐

利用binlog2sql查詢兩個binlog之間的SQL：必須是兩個binlog日志，指定start-file和stop-file

binlog2sql -h127.0.0.1 -P3309 -udba -p'xxxxxx' -dsakila -t employee --start-file='mysql-bin.000112' --stop-file='mysql-bin.000113' > /tmp/db.sql

利用binlog2sql查詢兩個binlog之間的閃回SQL：

binlog2sql --flashback -h127.0.0.1 -P3309 -udba -p'xxxxxx' -dsakila -t?employee --start-file='mysql-bin.000112' --stop-file='mysql-bin.000113'?> /tmp/flashback.sql

美團點評MyFlash工具https://github.com/Meituan-Dianping/MyFlash

http://blog.itpub.net/29987453/viewspace-2151627

數據恢復測試案例DELETE：

1)在sakila庫，刪除actors表的actor_id < 6的數據

mysql> use sakila;

Database changed

mysql> select * from actors limit 10;

+----------+------------+--------------+---------------------+

| actor_id | first_name | last_name | last_update |

+----------+------------+--------------+---------------------+

| 1 | PENELOPE | GUINESS | 2006-02-15 04:34:33 |

| 2 | NICK | WAHLBERG | 2006-02-15 04:34:33 |

| 3 | ED | CHASE | 2006-02-15 04:34:33 |

| 4 | JENNIFER | DAVIS | 2006-02-15 04:34:33 |

| 5 | JOHNNY | LOLLOBRIGIDA | 2006-02-15 04:34:33 |

| 6 | BETTE | NICHOLSON | 2006-02-15 04:34:33 |

| 7 | GRACE | MOSTEL | 2006-02-15 04:34:33 |

| 8 | MATTHEW | JOHANSSON | 2006-02-15 04:34:33 |

| 9 | JOE | SWANK | 2006-02-15 04:34:33 |

| 10 | CHRISTIAN | GABLE | 2006-02-15 04:34:33 |

+----------+------------+--------------+---------------------+

10 rows in set (0.00 sec)

mysql> show binary logs;

+------------------+-----------+

| Log_name | File_size |

+------------------+-----------+

| mysql-bin.000005 | 120 |

| mysql-bin.000006 | 120 |

+------------------+-----------+

2 rows in set (0.00 sec)

mysql> delete from actors where actor_id < 6;

Query OK, 5 rows affected (0.00 sec)

mysql> select * from actors limit 10;

+----------+------------+-----------+---------------------+

| actor_id | first_name | last_name | last_update |

+----------+------------+-----------+---------------------+

| 6 | BETTE | NICHOLSON | 2006-02-15 04:34:33 |

| 7 | GRACE | MOSTEL | 2006-02-15 04:34:33 |

| 8 | MATTHEW | JOHANSSON | 2006-02-15 04:34:33 |

| 9 | JOE | SWANK | 2006-02-15 04:34:33 |

| 10 | CHRISTIAN | GABLE | 2006-02-15 04:34:33 |

| 11 | ZERO | CAGE | 2006-02-15 04:34:33 |

| 12 | KARL | BERRY | 2006-02-15 04:34:33 |

| 13 | UMA | WOOD | 2006-02-15 04:34:33 |

| 14 | VIVIEN | BERGEN | 2006-02-15 04:34:33 |

| 15 | CUBA | OLIVIER | 2006-02-15 04:34:33 |

+----------+------------+-----------+---------------------+

10 rows in set (0.00 sec)

mysql> show binary logs;

+------------------+-----------+

| Log_name | File_size |

+------------------+-----------+

| mysql-bin.000005 | 120 |

| mysql-bin.000006 | 4836 |

+------------------+-----------+

2 rows in set (0.00 sec)

2)確定binlog 確認start position、stop position

[root@prod logs]#mysqlbinlog --base64-output=decode-rows -v -d sakila mysql-bin.000006 > /tmp/delactors.sql

BEGIN

/*!*/;

# at4601#181019 8:40:49 server id 33051132 end_log_pos 4660 CRC32 0x9c986f17 Table_map: `sakila`.`actors` mapped to number 94# at4660#181019 8:40:49 server id 33051132 end_log_pos 4805 CRC32 0x5839b8ff Delete_rows: table id 94flags: STMT_END_F

###DELETE FROM`sakila`.`actors`

###WHERE###@1=1 /*SHORTINT meta=0 nullable=0 is_null=0*/###@2='PENELOPE' /*VARSTRING(135) meta=135 nullable=0 is_null=0*/###@3='GUINESS' /*VARSTRING(135) meta=135 nullable=0 is_null=0*/###@4=1139949273 /*TIMESTAMP(0) meta=0 nullable=0 is_null=0*/###DELETE FROM`sakila`.`actors`

###WHERE###@1=2 /*SHORTINT meta=0 nullable=0 is_null=0*/###@2='NICK' /*VARSTRING(135) meta=135 nullable=0 is_null=0*/###@3='WAHLBERG' /*VARSTRING(135) meta=135 nullable=0 is_null=0*/###@4=1139949273 /*TIMESTAMP(0) meta=0 nullable=0 is_null=0*/###DELETE FROM`sakila`.`actors`

###WHERE###@1=3 /*SHORTINT meta=0 nullable=0 is_null=0*/###@2='ED' /*VARSTRING(135) meta=135 nullable=0 is_null=0*/###@3='CHASE' /*VARSTRING(135) meta=135 nullable=0 is_null=0*/###@4=1139949273 /*TIMESTAMP(0) meta=0 nullable=0 is_null=0*/###DELETE FROM`sakila`.`actors`

###WHERE###@1=4 /*SHORTINT meta=0 nullable=0 is_null=0*/###@2='JENNIFER' /*VARSTRING(135) meta=135 nullable=0 is_null=0*/###@3='DAVIS' /*VARSTRING(135) meta=135 nullable=0 is_null=0*/###@4=1139949273 /*TIMESTAMP(0) meta=0 nullable=0 is_null=0*/###DELETE FROM`sakila`.`actors`

###WHERE###@1=5 /*SHORTINT meta=0 nullable=0 is_null=0*/###@2='JOHNNY' /*VARSTRING(135) meta=135 nullable=0 is_null=0*/###@3='LOLLOBRIGIDA' /*VARSTRING(135) meta=135 nullable=0 is_null=0*/###@4=1139949273 /*TIMESTAMP(0) meta=0 nullable=0 is_null=0*/# at4805#181019 8:40:49 server id 33051132 end_log_pos 4836 CRC32 0xa24d4dbb Xid = 143

COMMIT/*!*/;

# at4836# at4915#181019 8:45:55 server id 33051132 end_log_pos 4962 CRC32 0xf0172e13 Rotate to mysql-bin.000007 pos: 4

COMMIT /*added by mysqlbinlog*//*!*/;

DELIMITER ;

#End of log file

binlog

3)生成閃回binlog_output_base.flashback文件

binlog的偏移量

start-positon=4601

stop-position=4962

[root@prod logs]# flashback --binlogFileNames=/data/mysql_33051/logs/mysql-bin.000006 --start-position=4601 --stop-position=4962

[root@prod logs]# ls

binlog_output_base.flashback

4)閃回數據

[root@cgdb logs]#mysqlbinlog --skip-gtids /data/mysql_33051/logs/binlog_output_base.flashback |mysql -uroot -p -S /data/mysql_33051/run/mysql.sock

驗證恢復的數據：

mysql> use sakila;

Reading table information for completion of table and column names

You can turn off this feature to get a quicker startup with -A

Database changed

mysql> select * from actors limit 10;

+----------+------------+--------------+---------------------+

| actor_id | first_name | last_name | last_update |

+----------+------------+--------------+---------------------+

| 1 | PENELOPE | GUINESS | 2006-02-15 04:34:33 |

| 2 | NICK | WAHLBERG | 2006-02-15 04:34:33 |

| 3 | ED | CHASE | 2006-02-15 04:34:33 |

| 4 | JENNIFER | DAVIS | 2006-02-15 04:34:33 |

| 5 | JOHNNY | LOLLOBRIGIDA | 2006-02-15 04:34:33 |

| 6 | BETTE | NICHOLSON | 2006-02-15 04:34:33 |

| 7 | GRACE | MOSTEL | 2006-02-15 04:34:33 |

| 8 | MATTHEW | JOHANSSON | 2006-02-15 04:34:33 |

| 9 | JOE | SWANK | 2006-02-15 04:34:33 |

| 10 | CHRISTIAN | GABLE | 2006-02-15 04:34:33 |

+----------+------------+--------------+---------------------+

10 rows in set (0.00 sec)

actors表的actor_id < 6的數據，已經恢復！

總結

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