mysqbinlog解析二進制日誌測試隨筆

原創 A_人在江湖 2018-09-12 07:09

在此之前需要了解二進制日誌的格式：

    row  --行

    statement  --語句

    Mixed  --混合

1、當前的binlog_format = statement

mysql> show variables like 'binlog_format';

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

| binlog_format | STATEMENT |

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

對庫表進行插入數據操作：

insert into tb2 values (3,'son')

查看當前格式下的二進制日誌內容：

# mysqlbinlog /mydata/master.000001

[root@localhost mydata]# mysqlbinlog --start-position=851 --stop-position=957

[root@localhost mydata]# mysqlbinlog --base64-output=decode-rows  --start-position=851 --stop-position=957 /mydata/master.000001

/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=1*/;

/*!40019 SET @@session.max_insert_delayed_threads=0*/;

/*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/;

DELIMITER /*!*/;

# at 851

#161118  0:59:38 server id 1  end_log_pos 957 CRC32 0xd89c9cd3 Query thread_id=2 exec_time=0 error_code=0

use `test`/*!*/;

SET TIMESTAMP=1479401978/*!*/;

SET @@session.pseudo_thread_id=2/*!*/;

SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=0, @@session.unique_checks=1, @@session.autocommit=1/*!*/;

SET @@session.sql_mode=1075838976/*!*/;

SET @@session.auto_increment_increment=1, @@session.auto_increment_offset=1/*!*/;

/*!\C utf8 *//*!*/;

SET @@session.character_set_client=33,@@session.collation_connection=33,@@session.collation_server=8/*!*/;

SET @@session.lc_time_names=0/*!*/;

SET @@session.collation_database=DEFAULT/*!*/;

insert into tb2 values (3,'son')

/*!*/;

DELIMITER ;

# End of log file

ROLLBACK /* added by mysqlbinlog */;

/*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;

/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=0*/;

[root@localhost mydata]#

2、binlog_format=row

mysql> show variables like 'binlog_format';

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

| binlog_format | ROW   |

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

同樣對錶進行插入和刪除的操作

mysql> insert into tb2 values(2,'helen');

mysql> delete from tb2 where id = 1 ;

查看二進制日誌：   直觀的反饋就是你壓根就看不到你剛纔所執行過的語句，只有些許關鍵字如insert 、delete表達了你動作的性質 。

[root@localhost mydata]# mysqlbinlog --base64-output=decode-row --start-position=120  master.000001

/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=1*/;

/*!40019 SET @@session.max_insert_delayed_threads=0*/;

/*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/;

DELIMITER /*!*/;

# at 120

#161118  1:14:58 server id 1  end_log_pos 192 CRC32 0x8882b974 Query thread_id=1 exec_time=0 error_code=0

SET TIMESTAMP=1479402898/*!*/;

SET @@session.pseudo_thread_id=1/*!*/;

SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=0, @@session.unique_checks=1, @@session.autocommit=1/*!*/;

SET @@session.sql_mode=1075838976/*!*/;

SET @@session.auto_increment_increment=1, @@session.auto_increment_offset=1/*!*/;

/*!\C utf8 *//*!*/;

SET @@session.character_set_client=33,@@session.collation_connection=33,@@session.collation_server=8/*!*/;

SET @@session.lc_time_names=0/*!*/;

SET @@session.collation_database=DEFAULT/*!*/;

BEGIN

/*!*/;

# at 192

#161118  1:14:58 server id 1  end_log_pos 241 CRC32 0xa120e7f3 Table_map: `test`.`tb2` mapped to number 71

# at 241

#161118  1:14:58 server id 1  end_log_pos 287 CRC32 0x6da9f0d9 Write_rows: table id 71 flags: STMT_END_F

# at 287

#161118  1:14:58 server id 1  end_log_pos 318 CRC32 0x952ced1d Xid = 16

COMMIT/*!*/;

# at 318

#161118  1:15:06 server id 1  end_log_pos 390 CRC32 0x37f19e7d Query thread_id=1 exec_time=0 error_code=0

SET TIMESTAMP=1479402906/*!*/;

BEGIN

/*!*/;

# at 390

#161118  1:15:06 server id 1  end_log_pos 439 CRC32 0x8f0bf21e Table_map: `test`.`tb2` mapped to number 71

# at 439

#161118  1:15:06 server id 1  end_log_pos 483 CRC32 0x9fe2e907 Write_rows: table id 71 flags: STMT_END_F

# at 483

#161118  1:15:06 server id 1  end_log_pos 514 CRC32 0xa7ed825e Xid = 17

COMMIT/*!*/;

# at 514

#161118  1:17:13 server id 1  end_log_pos 586 CRC32 0x3e2b7b53 Query thread_id=1 exec_time=0 error_code=0

SET TIMESTAMP=1479403033/*!*/;

BEGIN

/*!*/;

# at 586

#161118  1:17:13 server id 1  end_log_pos 635 CRC32 0xc5b403fd Table_map: `test`.`tb2` mapped to number 71

# at 635

#161118  1:17:13 server id 1  end_log_pos 679 CRC32 0xdc5e885f Delete_rows: table id 71 flags: STMT_END_F

# at 679

#161118  1:17:13 server id 1  end_log_pos 710 CRC32 0x2df182e5 Xid = 18

COMMIT/*!*/;

DELIMITER ;

# End of log file

ROLLBACK /* added by mysqlbinlog */;

/*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;

/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=0*/;

[root@localhost mydata]#

3、binlog_format = MIXED

mysql> show variables like 'binlog_format';

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

| Variable_name | Value |

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

| binlog_format | MIXED |

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

對test庫中的表tb2做了如下動作：

mysql> insert into tb2 values(2,'helen');

mysql> delete from tb2 where id = 1 ;

查看當前的二進制日誌：

[root@localhost mydata]# mysqlbinlog --base64-output=decode-rows  --start-position=120 /mydata/master.000001

/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=1*/;

/*!40019 SET @@session.max_insert_delayed_threads=0*/;

/*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/;

DELIMITER /*!*/;

# at 120

#161118  1:21:27 server id 1  end_log_pos 199 CRC32 0x6e07aaac Query thread_id=1 exec_time=0 error_code=0

SET TIMESTAMP=1479403287/*!*/;

SET @@session.pseudo_thread_id=1/*!*/;

SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=0, @@session.unique_checks=1, @@session.autocommit=1/*!*/;

SET @@session.sql_mode=1075838976/*!*/;

SET @@session.auto_increment_increment=1, @@session.auto_increment_offset=1/*!*/;

/*!\C utf8 *//*!*/;

SET @@session.character_set_client=33,@@session.collation_connection=33,@@session.collation_server=8/*!*/;

SET @@session.lc_time_names=0/*!*/;

SET @@session.collation_database=DEFAULT/*!*/;

BEGIN

/*!*/;

# at 199

#161118  1:21:27 server id 1  end_log_pos 306 CRC32 0xbc338f2d Query thread_id=1 exec_time=0 error_code=0

use `test`/*!*/;

SET TIMESTAMP=1479403287/*!*/;

insert into tb2 values(2,'helen')

/*!*/;

# at 306

#161118  1:21:27 server id 1  end_log_pos 337 CRC32 0xe0c099a6 Xid = 12

COMMIT/*!*/;

# at 337

#161118  1:21:58 server id 1  end_log_pos 416 CRC32 0x21caca8f Query thread_id=1 exec_time=0 error_code=0

SET TIMESTAMP=1479403318/*!*/;

BEGIN

/*!*/;

# at 416

#161118  1:21:58 server id 1  end_log_pos 518 CRC32 0x08994991 Query thread_id=1 exec_time=0 error_code=0

SET TIMESTAMP=1479403318/*!*/;

delete from tb2 where id = 1

/*!*/;

# at 518

#161118  1:21:58 server id 1  end_log_pos 549 CRC32 0xb0068443 Xid = 13

COMMIT/*!*/;

DELIMITER ;

# End of log file

ROLLBACK /* added by mysqlbinlog */;

/*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;

/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=0*/;

[root@localhost mydata]#

總結：

binlog_format = MIXED     ，默認爲STATEMENT

expire_logs_days = 7 ，默認爲0

max_binlog_size = 100M  ，默認是1G

binlog_cache_size = 32M   ，默認值


發表評論
所有評論
還沒有人評論，想成為第一個評論的人麼? 請在上方評論欄輸入並且點擊發布.
相關文章

ROW_FORMAT

寵物掛了 2018-09-12 03:50:26

Hive 查詢中的分組排名

jueshizhanhun 2018-09-12 03:11:47

Mariadb/MySQL備份和恢復之（一）：mysqldump的使用

332119393 2019-02-22 18:03:16

mysqlbinlog: unknown variable 'default-character-set=utf8'

沐木小布丁 2019-02-22 16:24:39

mysqlbinlog工具基於日誌恢復詳細解釋

葉30 2019-02-22 15:41:01

mysql database：binlog server

AMGYM 2018-11-23 02:12:16

mysqlbinlog 日常維護

春秋小記 2018-10-03 02:45:46

mysqlbinlog: unknown variable 'default-character-set=utf8' 解決方法

thinkdba 2018-09-13 03:14:03

mysqlbinlog工具基於日誌恢復詳細解釋

葉30 2018-09-12 03:44:29

利用binlog進行數據庫的還原

葉30 2018-09-12 03:44:29

MySQL學習筆記之六：MySQL日誌

iamwhoiam2013 2018-09-12 03:02:19

MariaDB數據庫備份恢復之（二）： 基於LVM邏輯卷快照實現數據庫的幾乎熱備

332119393 2018-09-11 07:58:47

Mariadb/MySQL備份和恢復之（一）：mysqldump的使用

332119393 2018-09-11 07:58:47

MySQL數據恢復一例

潮汐886 2018-09-11 07:40:42

mysqlbinlog 查看mysql bin 日誌

穿越防火牆 2018-09-11 06:46:50