How to configure MySql Data Synchronization

Mysql versions later than 3.23.15 provide the database replication function. This feature allows you to synchronize two databases, master-slave mode, and mutual backup mode. The settings of the Database Synchronization replication function are reflected in the mysql settings file. Mysql configuration file (usually my. cnf) in the unix environment in etcmysqlmy. cnf or in the mysql user's

Mysql versions later than 3.23.15 provide the database replication function. This feature allows you to synchronize two databases, master-slave mode, and mutual backup mode. The settings of the Database Synchronization replication function are reflected in the mysql settings file. Mysql configuration file (usually my. cnf) in the unix environment in/etc/mysql/my. cnf or in the mysql user's

Mysql versions later than 3.23.15 provide the database replication function. This feature allows you to synchronize two databases, master-slave mode, and mutual backup mode. The settings of the Database Synchronization replication function are reflected in the mysql settings file.

Mysql configuration file (generally my. cnf) In the unix environment, either in the/etc/mysql/my. cnf or in the my. cnf directory of the mysql user's home directory.
In the window environment, if the c: root directory contains the my. cnf file, the configuration file is used. When running the winmysqladmin.exe tool of mysql, this tool will name my. cnf in the c: root directory mycnf. bak. Create my. ini in the winnt directory. The configuration file is read when the mysql server is started. Therefore, you can copy the content in my. cnf to the my. ini file and use the my. ini file as the configuration file of the mysql server.
Setting method:
Set the sample environment:
Operating System: window2000 professional
Mysql: 4.0.4-beta-max-nt-log
A ip: 10.10.10.22
B ip: 10.10.10.53
A: Set

1. Add the most synchronous User Account:

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2. Add a database as the synchronization database:

 
 

  
  
 
   
 
    
create database backup
 
   
 
  
 
 

B: Set
1. Add the most synchronous User Account:

GRANT FILE ON *.* TO backup@'10.10.10.22' IDENTIFIED BY ‘1234’

2. Add a database as the synchronization database:

create database backup

Master/Slave Mode: A-> B
A is the master
Modify the my. ini file of mysql. Add the following configuration to the mysqld configuration item:

Server-id = 1log-bin # Set the log to be recorded. You can set log-bin = c: mysqlbakmysqllog to set the directory of the log file. # mysqllog is the name of the log file, and mysql will create different extensions, several log files named mysqllog. Binlog-do-db = backup # specify the database for logs

Restart the database service.
Use the show master status Command to view the logs.
B is slave
Modify the my. ini file of mysql B. Add the following configuration to the mysqld configuration item:

Server-id = 2master-host = 10.10.22master-user = backup # synchronize user account master-password = 1234master-port = 3306master-connect-retry = 60 preset Retry Interval 60 seconds replicate-do-db = backup tells slave to only perform backup database updates

Restart Database
Use show slave status to check the synchronization configuration.
Note: Because slave configuration information is set, mysql generates master.info in the database directory.
Therefore, if you want to modify the slave configuration, you must first delete the file. Otherwise, the modified configuration does not take effect.
Dual-host mutual backup mode.
If you add slave settings to aand master settings to B, you can synchronize data between B and.
Add the following settings to the mysqld configuration item in the configuration file of:

master-host=10.10.10.53master-user=backupmaster-password=1234replicate-do-db=backupmaster-connect-retry=10

Add the following settings to the mysqld configuration item in the configuration file of B:

log-bin=c:mysqllogmysqllogbinlog-do-db=backup

Note: *. err log file is generated when an error occurs. The synchronization thread exits. When an error is corrected, the synchronization mechanism should be executed to run slave start.
Restarting the AB machine enables two-way hot standby.

Test:
Batch insert AA (1872000) big data table to B
Database A can update 2500 data entries per second.