MySQL (from the master copy)

Source installation AliSQL-AliSQL-5.6.32-9

• Not from the main real-time synchronization between the database, even if the network connection is normal, there is an instant from the master data inconsistency.

• If the primary is disconnected from the network, from the library in the network returned to normal, batch synchronization.

• If you modify data from a database, then if this time from the library is the main library in the implementation of bin-log, it will stop sync error, this is a very dangerous operation. Therefore, under normal circumstances, we have to be very careful modification data from the database.

• A dual master configuration is derived, mainly from mutual configuration, as long as the modifications do not conflict between the two sides, it can work well.

• If multiple main library, you can use a ring configuration, so that any modification of a node can be synchronized to all nodes

Here we prepared two machines have been installed AliSQL-AliSQL-5.6.32-9 installed to / data / server
main library machine ip: 192.168.124.89 from the library machine ip: 192.168.124.109

master主库配置
vim  /data/server/
#修改内容
#解释：server-id服务的唯一标识（主从之间都必须不同）；log-bin启动二进制日志名称为mysql-bin 
【mysqld】
server-id=1
log-bin=mysql-bin

保存退出
cd /data/server/mysql/support-files
./mysql.server start

master主库添加从库账号
进入到bin目录启动mysql 进入到交互环境
cd /data/server/mysql/bin
./mysql -u root -p

For the new master-slave synchronization chaoge user, it is allowed to log in from a library '192.168.124.109'

From the library to the account authorization, indicating permission to chaoge copy from the library, copy machine on 192.168.124.109

Check the main library to create replication account

Check the authorized account permissions

View of the main library status

slave从库配置
vim /data/server/mysql/my.cnf

重启mysql数据库
cd /data/server/mysql/support-files
./mysql.server start

进入到mysql  bin目录进入到交互环境

cd /data/server/mysql/bin
./mysql -u root -p

Slava check the parameters from the database

Replication of configuration parameters, Slave connection configuration Master main library from the library

Synchronous switch activation from the library of test cases from the master copy

查看复制状态   看到
Slave_IO_Running: Yes
 Slave_SQL_Running: Yes

Then it is a success

Now we test

We create a database in the main library zzq

Look at all the database has no database zzq

Then look at the slave database has no zzq

Then we found zzq database replication from the primary to build success