MySQL dual-Machine hot backup

MySQL provides database replication functionality after version 3.23.15. The function of two database synchronization, master-slave mode and mutual backup mode can be realized by using this feature.

MySQL provides database replication functionality after version 3.23.15. The function of two database synchronization, master-slave mode and mutual backup mode can be realized by using this feature.

The settings for database synchronization replication are reflected in the MySQL settings file. MySQL configuration file (typically MY.CNF)

In a UNIX environment, in/ETC/MYSQL/MY.CNF or under the MySQL user's home directory my.cnf.

Window environment, if there is a my.cnf file under the C: root directory, the configuration file is taken. When running MySQL's Winmysqladmin.exe tool, the tool will name the MY.CNF in the C: root directory as Mycnf.bak. and create the My.ini in the Winnt directory. The MySQL server reads this profile when it is started. So you can copy the contents of the MY.CNF to the My.ini file and use the My.ini file as the MySQL server configuration file.

To set the method:

Set up 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. To increase the user's most synchronized user account:

GRANT FILE on *.* to backup@ ' 10.10.10.53 ' identified by ' 1234 '

2. Add a database as a synchronization database:

Create DATABASE backup

B: Set

1. To increase the user's most synchronized user account:

GRANT FILE on *.* to backup@ ' 10.10.10.22 ' identified by ' 1234 '

2. Add a database as a synchronization database:

Create DATABASE backup

Master-slave mode: a->b

A is master

Modify a MySQL My.ini file. In the MYSQLD configuration entry, add the following configuration:

Server-id=1

Log-bin

#设置需要记录log can set the directory of the Log-bin=c:mysqlbakmysqllog settings log file,

#其中mysqllog是日志文件的名称, MySQL will build several log files with different extensions and file names Mysqllog.

Binlog-do-db=backup #指定需要日志的数据库

Restart the database service.

Use the Show Master Status command to see the log.

b for Slave

Modify the My.ini file for b MySQL. In the MYSQLD configuration entry, add the following configuration:

server-id=2

master-host=10.10.10.22

Master-user=backup #同步用户帐号

master-password=1234

master-port=3306

MASTER-CONNECT-RETRY=60 Preset retry interval 60 seconds

Replicate-do-db=backup told slave to do only updates to the backup database

Restart database

Use show slave status to see synchronization configuration.

Note: Because the slave configuration information is set, MySQL generates master.info in the database directory

So if you have a configuration to modify the associated slave, delete the file first. Otherwise, the modified configuration does not take effect.

Dual-machine Standby mode.

If you add the slave setting in a and the master setting in B, you can do b->a synchronization.

Add the following settings to the MYSQLD configuration entry in A's configuration file:

master-host=10.10.10.53

Master-user=backup

master-password=1234

Replicate-do-db=backup

master-connect-retry=10

MYSQLD configuration entries in B's configuration file to add the following settings:

Log-bin=c:mysqllogmysqllog

Binlog-do-db=backup

Note: *.err log files when errors are generated. The synchronized thread exits, and when the error is corrected, let the synchronization mechanism work and run slave start

When the AB machine is reset, bidirectional hot standby can be achieved.

Test:

Bulk INSERT into b large data scale AA (1872000)

A database can update 2,500 data per second.