记录mysql数据库真正执行更改的所有操作(DML语句)，不包含那些没有修改任何数据的语句，不会记录select和show这样的语句。

二进制日志的作用：

1、 可以完成主从复制的功能

2、 进行恢复操作。

数据可以通过binglog日志,使用mysqlbinlog命令，实现基于时间点和位置的恢复操作。

查看binglog参数信息：

mysql> show global variables like ‘%bin%‘;

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

| Variable_name | Value |

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

| bind_address | * |

| binlog_cache_size | 4194304 |

| binlog_checksum | CRC32 |

| binlog_direct_non_transactional_updates | OFF |

| binlog_error_action | ABORT_SERVER |

| binlog_format | ROW |

| binlog_group_commit_sync_delay | 0 |

| binlog_group_commit_sync_no_delay_count | 0 |

| binlog_gtid_simple_recovery | ON |

| binlog_max_flush_queue_time | 0 |

| binlog_order_commits | ON |

| binlog_row_image | FULL |

| binlog_rows_query_log_events | OFF |

| binlog_stmt_cache_size | 32768 |

| innodb_api_enable_binlog | OFF |

| innodb_locks_unsafe_for_binlog | OFF |

| log_bin | ON |

| log_bin_basename | /mydata/mysql/mysql3307/logs/mysql-binlog |

| log_bin_index | /mydata/mysql/mysql3307/logs/mysql-binlog.index |

| log_bin_trust_function_creators | OFF |

| log_bin_use_v1_row_events | OFF |

| log_statements_unsafe_for_binlog | ON |

| max_binlog_cache_size | 1073741824 |

| max_binlog_size | 524288000 |

| max_binlog_stmt_cache_size | 18446744073709547520 |

| sync_binlog | 1 |

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

26 rows in set (0.00 sec)

二进制文件用cat,head,或者tail命令是无法看的，需要通过mysqlbinglog 命令查看二进制日志，把日志转换格式后，输出到自定义的文件。

查看binglog日志文件：

mysqlbinlog --no-defaults -v -v --base64-output=decode-rows /mydata/mysql/mysql3307/logs/mysql-binlog.000021 /root/mysqlbinlog21.log

含义：

-v代表可以查看到的具体执行信息。

--base64-output 把二进制文件转换格式

以下是在ROW模式下，记录的记忆行的变更情况，变更前以及变更后的内容。

修改记录模式为：

set global binlog_format=statement;

set global binlog_format=mixed;

set global binlog_format=row;

查看生产文件内容/root/mysqlbinlog21.log

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

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

DELIMITER /*!*/;

# at 4

#180521 1:09:56 server id 3307101 end_log_pos 123 CRC32 0x79f0cd1c Start: binlog v 4, server v 5.7.20-log created 180521 1:09:56 at startup

# Warning: this binlog is either in use or was not closed properly.

ROLLBACK/*!*/;

# at 123

#180521 1:09:56 server id 3307101 end_log_pos 194 CRC32 0x96ca2d5f Previous-GTIDs

# d6a9d222-5282-11e8-bac7-080027691c44:1-15

# at 194

#180521 9:47:53 server id 3307101 end_log_pos 259 CRC32 0x737b7bad GTID last_committed=0 sequence_number=1 rbr_only=no

SET @@SESSION.GTID_NEXT= ‘d6a9d222-5282-11e8-bac7-080027691c44:16‘/*!*/;

# at 259

#180521 9:47:53 server id 3307101 end_log_pos 388 CRC32 0x9eba0300 Query thread_id=3 exec_time=0 error_code=0

SET TIMESTAMP=1526867273/*!*/;

SET @@session.pseudo_thread_id=3/*!*/;

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

SET @@session.sql_mode=1436549152/*!*/;

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=45/*!*/;

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

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

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

create table test.zs(a timestamp,b timestamp,c timestamp)

/*!*/;

# at 388

#180521 9:49:28 server id 3307101 end_log_pos 453 CRC32 0x8a902dce GTID last_committed=1 sequence_number=2 rbr_only=yes

/*!50718 SET TRANSACTION ISOLATION LEVEL READ COMMITTED*//*!*/;

SET @@SESSION.GTID_NEXT= ‘d6a9d222-5282-11e8-bac7-080027691c44:17‘/*!*/;

# at 453

#180521 9:49:28 server id 3307101 end_log_pos 521 CRC32 0xfe907eed Query thread_id=3 exec_time=0 error_code=0

SET TIMESTAMP=1526867368/*!*/;

BEGIN

/*!*/;

# at 521

#180521 9:49:28 server id 3307101 end_log_pos 571 CRC32 0x528b2287 Table_map: `test`.`zs` mapped to number 219

# at 571

#180521 9:49:28 server id 3307101 end_log_pos 607 CRC32 0x2bb11644 Write_rows: table id 219 flags: STMT_END_F

### INSERT INTO `test`.`zs`

### SET

### @1=NULL /* TIMESTAMP(0) meta=0 nullable=1 is_null=1 */

### @2=NULL /* TIMESTAMP(0) meta=0 nullable=1 is_null=1 */

### @3=NULL /* TIMESTAMP(0) meta=0 nullable=1 is_null=1 */

# at 607

#180521 9:49:28 server id 3307101 end_log_pos 638 CRC32 0xf1b37ef5 Xid = 26

COMMIT/*!*/;

# at 638

#180521 9:49:30 server id 3307101 end_log_pos 703 CRC32 0x8d1451b6 GTID last_committed=2 sequence_number=3 rbr_only=yes

/*!50718 SET TRANSACTION ISOLATION LEVEL READ COMMITTED*//*!*/;

SET @@SESSION.GTID_NEXT= ‘d6a9d222-5282-11e8-bac7-080027691c44:18‘/*!*/;

# at 703

#180521 9:49:30 server id 3307101 end_log_pos 771 CRC32 0x17f458cd Query thread_id=3 exec_time=0 error_code=0

SET TIMESTAMP=1526867370/*!*/;

BEGIN

/*!*/;

# at 771

#180521 9:49:30 server id 3307101 end_log_pos 821 CRC32 0x8608f3f8 Table_map: `test`.`zs` mapped to number 219

# at 821

#180521 9:49:30 server id 3307101 end_log_pos 857 CRC32 0x61faa6a3 Write_rows: table id 219 flags: STMT_END_F

### INSERT INTO `test`.`zs`

### SET

### @1=NULL /* TIMESTAMP(0) meta=0 nullable=1 is_null=1 */

### @2=NULL /* TIMESTAMP(0) meta=0 nullable=1 is_null=1 */

### @3=NULL /* TIMESTAMP(0) meta=0 nullable=1 is_null=1 */

# at 857

#180521 9:49:30 server id 3307101 end_log_pos 888 CRC32 0xc555dada Xid = 27

COMMIT/*!*/;

# at 888

#180521 9:49:31 server id 3307101 end_log_pos 953 CRC32 0x152275a2 GTID last_committed=3 sequence_number=4 rbr_only=yes

/*!50718 SET TRANSACTION ISOLATION LEVEL READ COMMITTED*//*!*/;

SET @@SESSION.GTID_NEXT= ‘d6a9d222-5282-11e8-bac7-080027691c44:19‘/*!*/;

# at 953

#180521 9:49:31 server id 3307101 end_log_pos 1021 CRC32 0x68fadf15 Query thread_id=3 exec_time=0 error_code=0

SET TIMESTAMP=1526867371/*!*/;

BEGIN

/*!*/;

# at 1021

#180521 9:49:31 server id 3307101 end_log_pos 1071 CRC32 0x999fd973 Table_map: `test`.`zs` mapped to number 219

# at 1071

#180521 9:49:31 server id 3307101 end_log_pos 1107 CRC32 0x0c1bb219 Write_rows: table id 219 flags: STMT_END_F

### INSERT INTO `test`.`zs`

### SET

### @1=NULL /* TIMESTAMP(0) meta=0 nullable=1 is_null=1 */

### @2=NULL /* TIMESTAMP(0) meta=0 nullable=1 is_null=1 */

### @3=NULL /* TIMESTAMP(0) meta=0 nullable=1 is_null=1 */

# at 1107

#180521 9:49:31 server id 3307101 end_log_pos 1138 CRC32 0x0e581441 Xid = 28

COMMIT/*!*/;

# at 1138

#180521 9:51:29 server id 3307101 end_log_pos 1203 CRC32 0x6c5d54df GTID last_committed=4 sequence_number=5 rbr_only=no

SET @@SESSION.GTID_NEXT= ‘d6a9d222-5282-11e8-bac7-080027691c44:20‘/*!*/;

# at 1203

#180521 9:51:29 server id 3307101 end_log_pos 1290 CRC32 0x93e104d9 Query thread_id=4 exec_time=0 error_code=0

SET TIMESTAMP=1526867489/*!*/;

SET @@session.time_zone=‘SYSTEM‘/*!*/;

flush privileges

/*!*/;

# at 1290

#180521 10:02:20 server id 3307101 end_log_pos 1355 CRC32 0x07b66739 GTID last_committed=5 sequence_number=6 rbr_only=no

SET @@SESSION.GTID_NEXT= ‘d6a9d222-5282-11e8-bac7-080027691c44:21‘/*!*/;

# at 1355

#180521 10:02:20 server id 3307101 end_log_pos 1520 CRC32 0x48415c32 Query thread_id=7 exec_time=0 error_code=0

use `test`/*!*/;

SET TIMESTAMP=1526868140/*!*/;

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

create table zs1(a timestamp,b timestamp null default null,c timestamp null default null)

/*!*/;

# at 1520

#180521 10:05:36 server id 3307101 end_log_pos 1585 CRC32 0x749f7319 GTID last_committed=6 sequence_number=7 rbr_only=yes

/*!50718 SET TRANSACTION ISOLATION LEVEL READ COMMITTED*//*!*/;

SET @@SESSION.GTID_NEXT= ‘d6a9d222-5282-11e8-bac7-080027691c44:22‘/*!*/;

# at 1585

#180521 10:05:36 server id 3307101 end_log_pos 1657 CRC32 0x381adad5 Query thread_id=7 exec_time=0 error_code=0

SET TIMESTAMP=1526868336/*!*/;

BEGIN

/*!*/;

# at 1657

#180521 10:05:36 server id 3307101 end_log_pos 1708 CRC32 0x8b75b8d0 Table_map: `test`.`zs1` mapped to number 220

# at 1708

#180521 10:05:36 server id 3307101 end_log_pos 1748 CRC32 0x6f7e879b Write_rows: table id 220 flags: STMT_END_F

### INSERT INTO `test`.`zs1`

### SET

### @1=1526868336 /* TIMESTAMP(0) meta=0 nullable=0 is_null=0 */

### @2=NULL /* TIMESTAMP(0) meta=0 nullable=1 is_null=1 */

### @3=NULL /* TIMESTAMP(0) meta=0 nullable=1 is_null=1 */

# at 1748

#180521 10:05:36 server id 3307101 end_log_pos 1779 CRC32 0x8f7b45df Xid = 74

COMMIT/*!*/;

# at 1779

#180521 10:06:01 server id 3307101 end_log_pos 1844 CRC32 0x0857208f GTID last_committed=7 sequence_number=8 rbr_only=yes

/*!50718 SET TRANSACTION ISOLATION LEVEL READ COMMITTED*//*!*/;

SET @@SESSION.GTID_NEXT= ‘d6a9d222-5282-11e8-bac7-080027691c44:23‘/*!*/;

# at 1844

#180521 10:06:01 server id 3307101 end_log_pos 1916 CRC32 0xf8b57357 Query thread_id=7 exec_time=0 error_code=0

SET TIMESTAMP=1526868361/*!*/;

BEGIN

/*!*/;

# at 1916

#180521 10:06:01 server id 3307101 end_log_pos 1967 CRC32 0x71f69634 Table_map: `test`.`zs1` mapped to number 220

# at 1967

#180521 10:06:01 server id 3307101 end_log_pos 2007 CRC32 0x8398dbd6 Write_rows: table id 220 flags: STMT_END_F

### INSERT INTO `test`.`zs1`

### SET

### @1=1526868361 /* TIMESTAMP(0) meta=0 nullable=0 is_null=0 */

### @2=NULL /* TIMESTAMP(0) meta=0 nullable=1 is_null=1 */

### @3=NULL /* TIMESTAMP(0) meta=0 nullable=1 is_null=1 */

# at 2007

#180521 10:06:01 server id 3307101 end_log_pos 2038 CRC32 0xae8d3064 Xid = 77

COMMIT/*!*/;

# at 2038

#180521 10:06:02 server id 3307101 end_log_pos 2103 CRC32 0x50fdabc1 GTID last_committed=8 sequence_number=9 rbr_only=yes

/*!50718 SET TRANSACTION ISOLATION LEVEL READ COMMITTED*//*!*/;

SET @@SESSION.GTID_NEXT= ‘d6a9d222-5282-11e8-bac7-080027691c44:24‘/*!*/;

# at 2103

#180521 10:06:02 server id 3307101 end_log_pos 2175 CRC32 0x38a21fb3 Query thread_id=7 exec_time=0 error_code=0

SET TIMESTAMP=1526868362/*!*/;

BEGIN

/*!*/;

# at 2175

#180521 10:06:02 server id 3307101 end_log_pos 2226 CRC32 0x4a1b7b27 Table_map: `test`.`zs1` mapped to number 220

# at 2226

#180521 10:06:02 server id 3307101 end_log_pos 2266 CRC32 0x397de1b3 Write_rows: table id 220 flags: STMT_END_F

### INSERT INTO `test`.`zs1`

### SET

### @1=1526868362 /* TIMESTAMP(0) meta=0 nullable=0 is_null=0 */

### @2=NULL /* TIMESTAMP(0) meta=0 nullable=1 is_null=1 */

### @3=NULL /* TIMESTAMP(0) meta=0 nullable=1 is_null=1 */

# at 2266

#180521 10:06:02 server id 3307101 end_log_pos 2297 CRC32 0xe2727b87 Xid = 78

COMMIT/*!*/;

# at 2297

#180521 10:06:03 server id 3307101 end_log_pos 2362 CRC32 0x3cadd4ea GTID last_committed=9 sequence_number=10 rbr_only=yes

/*!50718 SET TRANSACTION ISOLATION LEVEL READ COMMITTED*//*!*/;

SET @@SESSION.GTID_NEXT= ‘d6a9d222-5282-11e8-bac7-080027691c44:25‘/*!*/;

# at 2362

#180521 10:06:03 server id 3307101 end_log_pos 2434 CRC32 0x06a0be65 Query thread_id=7 exec_time=0 error_code=0

SET TIMESTAMP=1526868363/*!*/;

BEGIN

/*!*/;

# at 2434

#180521 10:06:03 server id 3307101 end_log_pos 2485 CRC32 0xea1f5733 Table_map: `test`.`zs1` mapped to number 220

# at 2485

#180521 10:06:03 server id 3307101 end_log_pos 2525 CRC32 0xba9bf9de Write_rows: table id 220 flags: STMT_END_F

### INSERT INTO `test`.`zs1`

### SET

### @1=1526868363 /* TIMESTAMP(0) meta=0 nullable=0 is_null=0 */

### @2=NULL /* TIMESTAMP(0) meta=0 nullable=1 is_null=1 */

### @3=NULL /* TIMESTAMP(0) meta=0 nullable=1 is_null=1 */

# at 2525

#180521 10:06:03 server id 3307101 end_log_pos 2556 CRC32 0x1961d7b0 Xid = 79

COMMIT/*!*/;

# at 2556

#180521 10:09:00 server id 3307101 end_log_pos 2621 CRC32 0xe802a496 GTID last_committed=10 sequence_number=11 rbr_only=no

SET @@SESSION.GTID_NEXT= ‘d6a9d222-5282-11e8-bac7-080027691c44:26‘/*!*/;

# at 2621

#180521 10:09:00 server id 3307101 end_log_pos 2712 CRC32 0x1b99ba5c Query thread_id=7 exec_time=0 error_code=0

SET TIMESTAMP=1526868540/*!*/;

flush privileges

/*!*/;

mysqlbinlog: File ‘/root/mysqlbinlog21.log‘ not found (Errcode: 2 - No such file or directory)

SET @@SESSION.GTID_NEXT= ‘AUTOMATIC‘ /* added by mysqlbinlog */ /*!*/;

DELIMITER ;

# End of log file

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

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

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