MySQL configuring master-slave databases

Modify the configuration file

1. Master database
   stay my.ini or my.conf Add... To the file

#  Set up mysql  Of id only 
server-id = 1
#  To configure mysql 2 System log 
log-bin="mysql-master-bin"

Restart the database after saving

2. From database
   stay my.ini or my.conf Add... To the file

#  Set up mysql  Of id only 
server-id = 2
#  To configure mysql 2 System log 
log-bin="mysql-master-bin"

View primary database log information

After logging into the database

show master status;

Configure from database

Connect to the main database

CHANGE MASTER TO MASTER_HOST='192.168.2.133',MASTER_PORT=3306,MASTER_USER='user',MASTER_PASSWORD='***',MASTER_LOG_FILE='binlog.0000086',MASTER_LOG_POS=12193;
#（ Master database ）
# MASTER_HOST ip Address 
# MASTER_PORT  Port number  
# MASTER_USER  account number 
# MASTER_PASSWORD  password 
# MASTER_LOG_FILE  Point to the log start file （ In the picture above File The value in ）
# MASTER_LOG_POS  Location （ Of the picture above position The value in ） 

Commas can be written separately

Start the slave data function

start slave;
# stop slave;  Stop slave function 

View slave table status

show slave status \G;

When both values are yes When , This proves that the master-slave database configuration is successful

Last ：
If it doesn't work , Report errors ：

Got fatal error 1236 from master when reading data from binary log: 'Could not find first log file name in binary log index file'

Check if there is a problem with your file name

If there is no problem, refresh the log file in the primary database

 flush logs;

Review the log

Reconfigure from the database