search
HomeDatabaseMysql Tutorialmysql主从服务器不同步

mysql主从服务器不同步

Jun 07, 2016 pm 03:15 PM
linuxmysqlSynchronizeserverCommunityEnter

欢迎进入Linux社区论坛,与200万技术人员互动交流 >>进入 今天检查数据库发现一台MySQL Slave未和主机同步,查看Slave状态: mysql show slave status\G Slave_IO_Running: Yes Slave_SQL_Running: No Last_Errno: 1062 .... Seconds_Behind_Master:NULL 原

欢迎进入Linux社区论坛,与200万技术人员互动交流 >>进入

  今天检查数据库发现一台MySQL Slave未和主机同步,查看Slave状态:

  mysql> show slave status\G

  Slave_IO_Running: Yes

  Slave_SQL_Running: No

  Last_Errno: 1062

  ....

  Seconds_Behind_Master:NULL

  原因:

  1.程序可能在slave上进行了写操作

  2.也可能是slave机器重起后,事务回滚造成的.

  解决办法I:

  1.首先停掉Slave服务:slave stop

  2.到主服务器上查看主机状态:

  记录File和Position对应的值。

  mysql> show master status;

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

  | File | Position | Binlog_Do_DB | Binlog_Ignore_DB |

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

  | mysql-bin.000020 | 135617781 | | |

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

  1 row in set (0.00 sec)

  3.到slave服务器上执行手动同步:

  mysql> change master to

  > master_host='master_ip',

  > master_user='user',

  > master_password='pwd',

  > master_port=3307,

  > master_log_file='mysql-bin.000020',

  > master_log_pos=135617781;

  1 row in set (0.00 sec)

  mysql> slave start;

  1 row in set (0.00 sec)

  再次查看slave状态发现:

  Slave_IO_Running: Yes

  Slave_SQL_Running: Yes

  ...

  Seconds_Behind_Master: 0

  解决办法II:

  mysql> slave stop;

  mysql> set GLOBAL SQL_SLAVE_SKIP_COUNTER=1;

  mysql> slave start;

  方法一是强制性从某一个点开始同步,会有部分没有同步的数据丢失,后续主服务器上删除记录同步也会有一些错误信息,不会影响使用.方法二不一定会有效果.

mysql主从服务器不同步

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
What are some tools you can use to monitor MySQL performance?What are some tools you can use to monitor MySQL performance?Apr 23, 2025 am 12:21 AM

How to effectively monitor MySQL performance? Use tools such as mysqladmin, SHOWGLOBALSTATUS, PerconaMonitoring and Management (PMM), and MySQL EnterpriseMonitor. 1. Use mysqladmin to view the number of connections. 2. Use SHOWGLOBALSTATUS to view the query number. 3.PMM provides detailed performance data and graphical interface. 4.MySQLEnterpriseMonitor provides rich monitoring functions and alarm mechanisms.

How does MySQL differ from SQL Server?How does MySQL differ from SQL Server?Apr 23, 2025 am 12:20 AM

The difference between MySQL and SQLServer is: 1) MySQL is open source and suitable for web and embedded systems, 2) SQLServer is a commercial product of Microsoft and is suitable for enterprise-level applications. There are significant differences between the two in storage engine, performance optimization and application scenarios. When choosing, you need to consider project size and future scalability.

In what scenarios might you choose SQL Server over MySQL?In what scenarios might you choose SQL Server over MySQL?Apr 23, 2025 am 12:20 AM

In enterprise-level application scenarios that require high availability, advanced security and good integration, SQLServer should be chosen instead of MySQL. 1) SQLServer provides enterprise-level features such as high availability and advanced security. 2) It is closely integrated with Microsoft ecosystems such as VisualStudio and PowerBI. 3) SQLServer performs excellent in performance optimization and supports memory-optimized tables and column storage indexes.

How does MySQL handle character sets and collations?How does MySQL handle character sets and collations?Apr 23, 2025 am 12:19 AM

MySQLmanagescharactersetsandcollationsbyusingUTF-8asthedefault,allowingconfigurationatdatabase,table,andcolumnlevels,andrequiringcarefulalignmenttoavoidmismatches.1)Setdefaultcharactersetandcollationforadatabase.2)Configurecharactersetandcollationfor

What are triggers in MySQL?What are triggers in MySQL?Apr 23, 2025 am 12:11 AM

A MySQL trigger is an automatically executed stored procedure associated with a table that is used to perform a series of operations when a specific data operation is performed. 1) Trigger definition and function: used for data verification, logging, etc. 2) Working principle: It is divided into BEFORE and AFTER, and supports row-level triggering. 3) Example of use: Can be used to record salary changes or update inventory. 4) Debugging skills: Use SHOWTRIGGERS and SHOWCREATETRIGGER commands. 5) Performance optimization: Avoid complex operations, use indexes, and manage transactions.

How do you create and manage user accounts in MySQL?How do you create and manage user accounts in MySQL?Apr 22, 2025 pm 06:05 PM

The steps to create and manage user accounts in MySQL are as follows: 1. Create a user: Use CREATEUSER'newuser'@'localhost'IDENTIFIEDBY'password'; 2. Assign permissions: Use GRANTSELECT, INSERT, UPDATEONmydatabase.TO'newuser'@'localhost'; 3. Fix permission error: Use REVOKEALLPRIVILEGESONmydatabase.FROM'newuser'@'localhost'; then reassign permissions; 4. Optimization permissions: Use SHOWGRA

How does MySQL differ from Oracle?How does MySQL differ from Oracle?Apr 22, 2025 pm 05:57 PM

MySQL is suitable for rapid development and small and medium-sized applications, while Oracle is suitable for large enterprises and high availability needs. 1) MySQL is open source and easy to use, suitable for web applications and small and medium-sized enterprises. 2) Oracle is powerful and suitable for large enterprises and government agencies. 3) MySQL supports a variety of storage engines, and Oracle provides rich enterprise-level functions.

What are the disadvantages of using MySQL compared to other relational databases?What are the disadvantages of using MySQL compared to other relational databases?Apr 22, 2025 pm 05:49 PM

The disadvantages of MySQL compared to other relational databases include: 1. Performance issues: You may encounter bottlenecks when processing large-scale data, and PostgreSQL performs better in complex queries and big data processing. 2. Scalability: The horizontal scaling ability is not as good as Google Spanner and Amazon Aurora. 3. Functional limitations: Not as good as PostgreSQL and Oracle in advanced functions, some functions require more custom code and maintenance.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

MinGW - Minimalist GNU for Windows

MinGW - Minimalist GNU for Windows

This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

PhpStorm Mac version

PhpStorm Mac version

The latest (2018.2.1) professional PHP integrated development tool

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)