Distributed database master-slave configuration （MySQL）

​ Be careful : It is installed by default mysql, See my other blog for the installation tutorial –springboot The project is deployed to Alibaba cloud server （centos7）_Java_ Li Ziling's blog -CSDN Blog _springboot Deploy to alicloud

​ My master database and slave database are placed on a cloud server respectively , If there is only one ECs, you can install one on your computer MySQL, It should be noted that
Windows The configuration file to be modified under the system is my.in

1. Master database configuration

• modify my.cnf file

  vim /etc/my.cnf
  

  • Add the following

    server-id=1  # The server ID, Any integer 
    log-bin=mysql-bin  # Log on 
    binlog-do-db=db_test  # Only synchronize the configuration to this database , If you copy multiple databases , Repeat this option 
    

  • As shown in the figure

  

​

• restart MySQL

  systemctl restart mysqld
  

• Sign in MySQL, Test configuration success

  • Sign in MySQL

    mysql -uroot -p
    

  • Create the corresponding database ( It is consistent with that in the configuration file :bindlog-do-db=db_test)

    create database db_test
    

  • Check the master database status , As shown in the figure below , Then the configuration is successful

    show master status
    

  

2. Configure from database

• modify my.cnf file

  vim /etc/my.cnf
  
  

• Add the following

  server-id=2  # The server ID, Any integer , It is different from the main library 
  

• As shown in the figure

  

• restart MySQL

  systemctl restart mysqld
  
  
  
  

• Sign in MySQL, Test configuration success

  • Sign in MySQL

    mysql -uroot -p
    

  • Create the corresponding database ( It is consistent with that in the master database configuration file :bindlog-do-db=db_test)

    create database db_test
    

  • Execute the following commands in turn

    stop slave
    

    Be careful ： The specific content needs to be filled in by yourself

    change master to 
    master_host=' Master database server IP',
    master_user=' Primary database user name ',
    master_password=' Master database password ',
    master_log_file='mysql-bin.000005', # And graph 2 File Consistent values 
    master_log_pos=322; # And graph 2 Position Consistent values 
    

    start slave
    

    show slave status
    

    • If there are two Yes Then the configuration is successful ( As shown in the figure below )

    

• detection result

  In the main database db_test Create a database table randomly in the database , Add a few more test data , You will find that the corresponding database tables and data will be automatically created from the database