Mysql database implements synchronous update of master-slave database

Currently: D:\mysql-5.7.25 ( as the master library ) -> D:\mysql-5.7.25-FDB ( as the slave library )

step one:

First modify the my.ini configuration file from the database

[mysqld]
#Set port 3307 _
port = 3307
#Set the installation directory of mysql
basedir = D:\mysql-5.7.25-FDB
#Set the data storage directory of the mysql database
datadir = D:\mysql-5.7.25-FDB\data
Then open the cmd command in the bin directory of the slave library and enter -defaults-file = " D:\mysql-5.7.25-FDB\my.ini " (this is to install the library under windows)

Step two:

Modify the relevant configuration of the master-slave database

Master database-my.ini:

[mysqld]
#Open log
log‐bin = mysql‐bin
#Set the service id , the master and slave cannot be consistent
server‐id = 1
#Set the database that needs to be synchronized
binlog‐do‐db = course
# Shield system library synchronization
binlog‐ignore‐db = mysql
binlog‐ignore‐db = information_schema
binlog‐ignore‐db = performance_schema
From database-my.ini:
[mysqld]
#Open log
log‐bin = mysql‐bin
#Set the service id , the master and slave cannot be consistent
server‐id = 2
#Set the database that needs to be synchronized
replicate_wild_do_table = course.%
# Shield system library synchronization
replicate_wild_ignore_table = mysql.%
replicate_wild_ignore_table = information_schema.%
replicate_wild_ignore_table = performance_schema.%

Step three:

Create an account for master-slave replication

#Switch to the bin directory of the main library and log in to the main library
mysql ‐h localhost ‐uroot ‐p
#Authorize the dedicated account for master and backup replication
GRANT REPLICATION SLAVE ON *.* TO 'db_sync' @ '%' IDENTIFIED BY 'db_sync' ;
# Refresh permissions
FLUSH PRIVILEGES;
#Confirm the location and record the file name and location
show master status;

Step four:

Set up data synchronization from the library to the main library

#Switch to the bin directory of the slave library and log in to the slave library
mysql ‐h localhost ‐P3307 ‐uroot ‐p
# first stop synchronization
STOP SLAVE;
#Modify the slave library pointing to the main library, using the file name and location recorded in the previous step
CHANGE MASTER TO
master_host = 'localhost' ,
master_user = 'db_sync' ,
master_password = 'db_sync' ,
#The following two data are the data information obtained in step 3 to determine the location
master_log_file = 'mysql‐bin.000002' ,
master_log_pos = 154 ;
# start synchronization
START SLAVE;
#View slave library status Slave_IO_Runing and Slave_SQL_Runing are both Yes , indicating that the synchronization is successful, if not Yes , please check
error_log , then
Check for related exceptions.
show slave status
#Note that if the slave library has already pointed to the main library before, you need to execute the following command to clear it first
STOP SLAVE IO_THREAD FOR CHANNEL '' ;
reset slave all;

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Origin blog.csdn.net/m0_67601895/article/details/127651535