MySql 9 in Docker 利用克隆插件搭建主从

环境说明

1. Docker
2. Windows 11
3. MySql 9.1.0

搭建步骤

1. 准备主库

1. 准备一个主库的配置文件 master.cnf

[mysqld]
server-id=1
log-bin=mysql-bin
binlog-format=ROW
gtid_mode=ON
enforce-gtid-consistency=ON
log_slave_updates=ON
read_only=OFF
plugin-load=clone=mysql_clone.so

2. 执行 Docker run 启动主库容器

docker run --name mysql-master --restart=unless-stopped -p 5300:3306 -e MYSQL_ROOT_PASSWORD=123456 -v C:\Users\Administrator\docker\MySql\replication\master\conf\master.cnf:/etc/mysql/conf.d/master.cnf:ro -v C:\Users\Administrator\docker\MySql\replication\master\data:/var/lib/mysql -d mysql

3. 进入容器并登陆mysql

docker exec -it mysql-master bash 
mysql -u root -p

4. 创建复制用户

CREATE USER 'repl'@'%' IDENTIFIED with caching_sha2_password BY '123456';  
GRANT REPLICATION SLAVE ON *.* TO 'repl'@'%';  
FLUSH PRIVILEGES;

5. 退出

EXIT;

2. 准备从库

1. 准备一个从库的配置文件 slave.cnf

[mysqld] 
server-id=2 
log-bin=mysql-bin 
binlog-format=ROW 
gtid_mode=ON 
enforce-gtid-consistency=ON 
read_only=ON
plugin-load=clone=mysql_clone.so

2. 执行 Docker run

docker run --name mysql-slave --restart=unless-stopped -p 5301:3306 -e MYSQL_ROOT_PASSWORD=123456 -v C:\Users\Administrator\docker\MySql\replication\slave\conf\slave.cnf:/etc/mysql/conf.d/slave.cnf:ro -v C:\Users\Administrator\docker\MySql\replication\slave\data:/var/lib/mysql -d mysql

3. 进入容器并登陆mysql

docker exec -it mysql-slave bash 
mysql -u root -p

4. 允许克隆来源

SET GLOBAL clone_valid_donor_list = '172.17.0.6:3306';

5. 执行克隆命令

CLONE INSTANCE FROM 'root'@'172.17.0.6':3306 IDENTIFIED BY '123456';

6. 克隆完成，从库会自动重启

7. 重新进入后可以查看克隆状态

select * from performance_schema.clone_status;

8. 从库即可开启主从复制

CHANGE REPLICATION SOURCE TO 
	SOURCE_HOST='172.17.0.6', 
	SOURCE_PORT = 3306, 
	SOURCE_USER='repl', 
	SOURCE_PASSWORD='123456', 
	GET_SOURCE_PUBLIC_KEY=1, 
	SOURCE_AUTO_POSITION=1;

start REPLICA;

SHOW REPLICA STATUS\G;

验证

1. 主库执行下列SQL，完成后查看从库是否同步

CREATE DATABASE test_db2;  -- 创建数据库  
USE test_db2;  -- 切换数据库  
CREATE TABLE users (  
                       id INT AUTO_INCREMENT PRIMARY KEY,  
                       name VARCHAR(50) NOT NULL,  
                       email VARCHAR(100) NOT NULL  
);  -- 创建表  
INSERT INTO users (name, email) VALUES ('tsj', 'tsj@example.com');  -- 插入数据  
SELECT * FROM users;  -- 查看数据