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新京葡娱乐场网址二进制事务日志

The verbosity for handling events intended for the error log, as filtered by the log_filter_internal error log filter component. log_error_verbosity has no effect if log_filter_internal is not enabled.

率先步:是或不是设置了--binlog_do_db、--binlog_ignore_db 或双方?是的话实行下一步测量检验;  --若无安装,记录全体数据库的事情

 

大局动态系统变量:sync_binlog=n:提示mysql待n次写入缓存后 才写入 磁盘。实际上,固然n=1,对于innodb来讲仍然有非常大可能率是多少不等同,那是内需安装--innodb-support-xa=1

Property

Value

Command-Line Format

--log-warnings[=#]

Deprecated

5.7.2

System Variable

log_warnings

Scope

Global

Dynamic

Yes

Type (64-bit platforms)

integer

Type (32-bit platforms)

integer

Default Value (64-bit platforms, >= 5.7.2)

2

Default Value (64-bit platforms, <= 5.7.1)

1

Default Value (32-bit platforms, >= 5.7.2)

2

Default Value (32-bit platforms, <= 5.7.1)

1

Minimum Value (64-bit platforms)

0

Minimum Value (32-bit platforms)

0

Maximum Value (64-bit platforms)

18446744073709551615

Maximum Value (32-bit platforms)

4294967295

其三步:假若设置了--binlog-do-db,(暗许)数据库是不是合营设置?是的话写作业日志,甘休测验;否的话不记录事务日志,甘休测验!

 

Note

From MySQL 5.1.18 through 5.1.22, “mysql” was used when no base_name was specified. Also in these versions, a path given as part of the --log-bin options was treated as absolute rather than relative. The previous behaviors were restored in MySQL 5.1.23. (See Bug#28603 and Bug#28597.)

If you supply an extension in the log name (for example, --log-bin=base_name.extension), the extension is silently removed and ignored.

mysqld appends a numeric extension to the binary log basename to generate binary log file names. The number increases each time the server creates a new log file, thus creating an ordered series of files. The server creates a new file in the series each time it starts or flushes the logs. The server also creates a new binary log file automatically when the current log's size reaches max_binlog_size. A binary log file may become larger than max_binlog_size if you are using large transactions because a transaction is written to the file in one piece, never split between files.

To keep track of which binary log files have been used, mysqld also creates a binary log index file that contains the names of all used binary log files. By default, this has the same basename as the binary log file, with the extension '.index'. You can change the name of the binary log index file with the --log-bin-index[=file_name] option. You should not manually edit this file while mysqld is running; doing so would confuse mysqld.

You can delete all binary log files with the RESET MASTER statement, or a subset of them with PURGE BINARY LOGS. See Section 12.5.6.6, “RESET Syntax”, and Section 12.6.1.1, “PURGE BINARY LOGS Syntax”.

Writes to the binary log file and binary log index file are handled in the same way as writes to MyISAM tables. See Section B.1.4.3, “How MySQL Handles a Full Disk”.

The binary log format has some known limitations that can affect recovery from backups. See Section 16.3.1, “Replication Features and Issues”.

Binary logging for stored routines and triggers is done as described in Section 19.6, “Binary Logging of Stored Programs”.

A replication slave server by default does not write to its own binary log any data modifications that are received from the replication master. To log these modifications, start the slave with the --log-slave-updates option (see also Section 16.1.3.3, “Replication Slave Options and Variables”).

Evaluation of update selection options.  The server evaluates the options for logging or ignoring updates to the binary log according to the following rules:

  1. Are there --binlog-do-db or --binlog-ignore-db rules?

    • No: Write the statement to the binary log and exit.

    • Yes: Go to the next step.

  2. There are some rules (--binlog-do-db, --binlog-ignore-db, or both). Is there a default database (has any database been selected by USE?)?

    • No: Do not write the statement, and exit.

    • Yes: Go to the next step.

  3. There is a default database. Are there some --binlog-do-db rules?

    • Yes: Does the default database match any of the --binlog-do-db rules?

      • Yes: Write the statement and exit.

      • No: Do not write the statement, and exit.

    • No: Go to the next step.

  4. There are some --binlog-ignore-db rules. Does the default database match any of the --binlog-ignore-db rules?

    • Yes: Do not write the statement, and exit.

    • No: Write the query and exit.

 

 

Property

Value

Command-Line Format

--log-error-verbosity=#

System Variable

log_error_verbosity

Scope

Global

Dynamic

Yes

SET_VAR Hint Applies

No

Type

integer

Default Value (>= 8.0.4)

2

Default Value (<= 8.0.3)

3

Minimum Value

1

Maximum Value

3

mysql的二进制事务日志和其它的dbms的事情日志是相像的事物,是数据库备份、恢复生机、还原,高档的复制、镜像等功能的中坚构件。

log_error_verbosity

附:

log_warnings 为0, 表示不记录告急察与消防人员息。

 

 

 

 

系统状态变量:binlog_cache_disk_use:提醒二进制日志系统缓存使用的有时文件的深浅

 

Warning

When using statement-based logging in a replication scenario, it is possible for the data on the master and slave to become different if a statement is designed in such a way that the data modification is non-deterministic; that is, it is left to the will of the query optimizer. In general, this is not a good practice even outside of replication. For a detailed explanation of this issue, see Section B.1.8.2, “Additional Known Issues”.

要是从服务器(slave server)运维时启用了--log-warnings,则从设备将音讯输出到不当日志中以提供有关其状态的音讯,举个例子二进制日志和中继日志坐标,它在开头作业时切换成另四个连接日志,断开连接后再度连接等等。要是--log-warnings大于0,服务器将记录关于对基于语句的日记不安全的语句的音信。

5.2.4.1. Binary Logging Formats

A number of different logging formats are used to record information in the binary log. The exact format employed depends on the version of MySQL being used. There are three logging formats:

  • Replication capabilities in MySQL originally were based on propagation of SQL statements from master to slave. This is called statement-based logging. You can cause this format to be used by starting the server with --binlog-format=STATEMENT.

  • In row-based logging, the master writes events to the binary log that indicate how individual table rows are affected. You can cause the server to use row-based logging by starting it with --binlog-format=ROW.

    Support for row-based logging was added in MySQL 5.1.5.

  • A third option is also available: mixed logging. With mixed logging, statement-based logging is used by default, but the logging mode switches automatically to row-based in certain cases as described below. You can cause MySQL to use mixed logging explicitly by starting mysqld with the option --binlog-format=MIXED.

    Mixed logging is available beginning with MySQL 5.1.8. In MySQL 5.1.12, it become the default logging mode; in 5.1.29, the default was changed back to STATEMENT.

    Starting with MySQL 5.1.20, the logging format can also be set or limited by the storage engine being used. This helps to eliminate issues when logging, and more specifically replicating, certain statements between a master and slave which are using different storage engines.

With MySQL's classic statement-based replication, there may be issues with replicating non-deterministic statements. In deciding whether or not a given statement is safe for statement-based replication, MySQL determines whether it can guarantee that the statement can be replicated using the statement-based format. If MySQL cannot make this guarantee, it marks the statement as potentially unreliable and issues the warning, Statement may not be safe to log in statement format.

Prior to MySQL 5.1.36, this warning read, Statement is not safe to log in statement format. (Bug#42415)

You can avoid these issues by using MySQL's row-based replication instead.

 

reset master;

 

mysql的二进制事务日志是单身于积累引擎的,和innodb事务存款和储蓄引擎本身的事情日志分裂

 

动态会话系统变量:binlog_format={statement|row|mixed}  --仅仅影响当下连接会话的记录格式

 

5.2.4.2. Setting The Binary Log Format

The default binary logging format depends on the version of MySQL you are using:

  • For MySQL 5.1.11 and earlier, and for MySQL 5.1.29 and later, statement-based logging is used by default.

  • For MySQL 5.1.12 through MySQL 5.1.28, mixed logging is used by default.

Exception.  For all MySQL Cluster releases using version 6.1 or later of the NDBCLUSTER storage engine (even those releases based on MySQL 5.1.29 and later), the default binary log format is MIXED. See Section 17.9, “MySQL Cluster Replication”.

You can force the replication format by starting the MySQL server with --binlog-format=type. When set, all replication slaves connecting to the server will read the events according to this setting. The supported values for type are:

  • ROW causes replication to be row-based.

  • STATEMENT causes replication to be statement-based. This is the default for MySQL 5.1.11 and earlier, and MySQL 5.1.29 and later.

  • MIXED causes replication to use mixed format. This is the default for MySQL 5.1.12 to 5.1.28.

The logging format also can be switched at runtime. To specify the format globally for all clients, set the global value of the binlog_format system variable. (To change the global value, you must have need the SUPER privilege. This is also true for the SESSION value as of MySQL 5.1.29.)

To switch to statement-based format, use either of these statements:

mysql> SET GLOBAL binlog_format = 'STATEMENT';
mysql> SET GLOBAL binlog_format = 1;

To switch to row-based format, use either of these statements:

mysql> SET GLOBAL binlog_format = 'ROW';
mysql> SET GLOBAL binlog_format = 2;

To switch to mixed format, use either of these statements:

mysql> SET GLOBAL binlog_format = 'MIXED';
mysql> SET GLOBAL binlog_format = 3;

An individual client can control the logging format for its own statements by setting the session value of binlog_format. For example:

mysql> SET SESSION binlog_format = 'STATEMENT';
mysql> SET SESSION binlog_format = 'ROW';
mysql> SET SESSION binlog_format = 'MIXED';

In addition to switching the logging format manually, a slave server may switch the format automatically. This happens when the server is running in either STATEMENT or MIXED format and encounters a row in the binary log that is written in ROW logging format. In that case, the slave switches to row-based replication temporarily for that event, and switches back to the previous format afterwards.

There are two reasons why you might want to set replication logging on a per-connection basis:

  • A thread that makes many small changes to the database might want to use row-based logging. A thread that performs updates that match many rows in the WHERE clause might want to use statement-based logging because it will be more efficient to log a few statements than many rows.

  • Some statements require a lot of execution time on the master, but result in just a few rows being modified. It might therefore be beneficial to replicate them using row-based logging.

There are exceptions when you cannot switch the replication format at runtime:

  • From within a stored function or a trigger.

  • If the NDBCLUSTER storage engine is enabled.

  • If the session is currently in row-based replication mode and has open temporary tables.

Trying to switch the format in any of these cases results in an error.

Switching the replication format at runtime is not recommended when any temporary tables exist, because temporary tables are logged only when using statement-based replication, whereas with row-based replication they are not logged. With mixed replication, temporary tables are usually logged; exceptions happen with user-defined functions (UDFs) and with the UUID() function.

With the binlog format set to ROW, many changes are written to the binary log using the row-based format. Some changes, however, still use the statement-based format. Examples include all DDL (data definition language) statements such as CREATE TABLE, ALTER TABLE, or DROP TABLE.

The --binlog-row-event-max-size option is available for servers that are capable of row-based replication. Rows are stored into the binary log in chunks having a size in bytes not exceeding the value of this option. The value must be a multiple of 256. The default value is 1024.

 

全局动态系统变量:binlog_cache_size、max_binlog_cache_size用来设置二进制日志的连串缓存,合理设置!

 

 

而新参数log_error_verbosity更简便易行,它有四个可选值, 分别对应:1 错误新闻;2  错误音讯和告急察与消防人员息; 3:错误音讯、告急察与消防人员息和布告新闻。 具体参考官方文档,上边部分截取官方文书档案。

系统状态变量:binglog_cache_use:提醒二进制日志系统缓存(内部存款和储蓄器或有的时候文件)中蕴藏的事务日志数目

 

安装二进制事务日志的记录的格式

Print out warnings such as Aborted connection... to the error log. This option is enabled (1) by default. To disable it, use --log-warnings=0. Specifying the option without a level value increments the current value by 1. Enabling this option by setting it greater than 0 is recommended, for example, if you use replication (you get more information about what is happening, such as messages about network failures and reconnections). If the value is greater than 1, aborted connections are written to the error log, and access-denied errors for new connection attempts are written. See Section B.5.2.11, “Communication Errors and Aborted Connections”.

启用二进制事务日志:

log_warnings 大于1, 表示各样告警察讯问息,比如有关互连网故障的音讯和再一次连接消息写入错误日志。

5.2.4.4. Logging Format for Changes to mysql Database Tables

The contents of the grant tables in the mysql database can be modified directly (for example, with INSERT or DELETE) or indirectly (for example, with GRANT or CREATE USER). As of MySQL 5.1.17, statements that affect mysql database tables are written to the binary log using the following rules:

  • Data manipulation statements that change data in mysql database tables directly are logged according to the setting of the binlog_format system variable. This pertains to statements such as INSERT, UPDATE, DELETE, REPLACE, DO, LOAD DATA INFILE, SELECT, and TRUNCATE.

  • Statements that change the mysql database indirectly are logged as statements regardless of the value of binlog_format. This pertains to statements such as GRANT, REVOKE, SET PASSWORD, RENAME USER, CREATE (all forms except CREATE TABLE ... SELECT), ALTER (all forms), and DROP (all forms).

CREATE TABLE ... SELECT is a combination of data definition and data manipulation. The CREATE TABLE part is logged using statement format and the SELECT part is logged according to the value of binlog_format.

 

 

其三步:若无设置--binlog-do-db,而设置了--binlog-ignore-db,(暗中认可)数据库是不是相称设置?是的话不写作业日志,结束测验;否的话记录事务日志,截止测量检验!  --注意:--binlog-ignore-db选项在装置了--binlog-do-db时,不会起任何意义,形同虚设!

 

截断二进制事务日志:

 

动态全局系统变量:binlog_format={statement|row|mixed}

Property

Value

Command-Line Format

--log-warnings[=#]

System Variable

log_warnings

Scope (>= 5.6.4)

Global

Scope (<= 5.6.3)

Global, Session

Dynamic

Yes

Type (64-bit platforms)

integer

Type (32-bit platforms)

integer

Default Value (64-bit platforms)

1

Default Value (32-bit platforms)

1

Minimum Value (64-bit platforms)

0

Minimum Value (32-bit platforms)

0

Maximum Value (64-bit platforms)

18446744073709551615

Maximum Value (32-bit platforms)

4294967295

 

 

mysql的二进制事务日志是后生可畏密密层层有base_name.数字连串组成的。日志体系在日记大小超越max_binlog_size时自动发出——注意实际的二进制日志文件的轻重恐怕超出该装置的高低,因为四个政工日志记录不能够超越文件。

 

二进制事务日志的情况及调动

The following table shows the permitted verbosity values.

 

 

 

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