mkdir -p /usr/local/mysqlData/master/cnf
mkdir -p /usr/local/mysqlData/master/data

[root@aliyun /]# docker exec -it slaver /bin/bash
root@fe8b6fc2f1ca:/# mysql -u root -p123456  

mysql> change master to master_host='172.17.0.2',master_user='reader',master_password='reader',master_log_file='mysql-bin.000003',master_log_pos=591;

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.mybatis.spring.boot</groupId>
        <artifactId>mybatis-spring-boot-starter</artifactId>
        <version>2.1.4</version>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>druid-spring-boot-starter</artifactId>
        <version>1.1.21</version>
    </dependency>
    <dependency>
        <groupId>org.apache.shardingsphere</groupId>
        <artifactId>sharding-jdbc-spring-boot-starter</artifactId>
        <version>4.0.0-RC1</version>
    </dependency>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

spring.main.allow-bean-definition-overriding=true
#显示sql
spring.shardingsphere.props.sql.show=true

#配置数据源
spring.shardingsphere.datasource.names=ds1,ds2,ds3

#master-ds1数据库连接信息
spring.shardingsphere.datasource.ds1.type=com.alibaba.druid.pool.DruidDataSource
spring.shardingsphere.datasource.ds1.driver-class-name=com.mysql.cj.jdbc.Driver
spring.shardingsphere.datasource.ds1.url=jdbc:mysql://47.101.58.187:3306/sharding-jdbc-db?useUnicode=true&useSSL=false&serverTimezone=Asia/Shanghai
spring.shardingsphere.datasource.ds1.username=root
spring.shardingsphere.datasource.ds1.password=123456
spring.shardingsphere.datasource.ds1.maxPoolSize=100
spring.shardingsphere.datasource.ds1.minPoolSize=5

#slave-ds2数据库连接信息
spring.shardingsphere.datasource.ds2.type=com.alibaba.druid.pool.DruidDataSource
spring.shardingsphere.datasource.ds2.driver-class-name=com.mysql.cj.jdbc.Driver
spring.shardingsphere.datasource.ds2.url=jdbc:mysql://47.101.58.187:3307/sharding-jdbc-db?useUnicode=true&useSSL=false&serverTimezone=Asia/Shanghai
spring.shardingsphere.datasource.ds2.username=root
spring.shardingsphere.datasource.ds2.password=123456
spring.shardingsphere.datasource.ds2.maxPoolSize=100
spring.shardingsphere.datasource.ds2.minPoolSize=5

#slave-ds3数据库连接信息
spring.shardingsphere.datasource.ds3.type=com.alibaba.druid.pool.DruidDataSource
spring.shardingsphere.datasource.ds3.driver-class-name=com.mysql.cj.jdbc.Driver
spring.shardingsphere.datasource.ds3.url=jdbc:mysql://47.101.58.187:3307/sharding-jdbc-db?useUnicode=true&useSSL=false&serverTimezone=Asia/Shanghai
spring.shardingsphere.datasource.ds3.username=root
spring.shardingsphere.datasource.ds3.password=123456
spring.shardingsphere.datasource.ds.maxPoolSize=100
spring.shardingsphere.datasource.ds3.minPoolSize=5

#配置默认数据源ds1 默认数据源,主要用于写
spring.shardingsphere.sharding.default-data-source-name=ds1
#配置主从名称
spring.shardingsphere.masterslave.name=ms
#置主库master,负责数据的写入
spring.shardingsphere.masterslave.master-data-source-name=ds1
#配置从库slave节点
spring.shardingsphere.masterslave.slave-data-source-names=ds2,ds3
#配置slave节点的负载均衡均衡策略,采用轮询机制
spring.shardingsphere.masterslave.load-balance-algorithm-type=round_robin

#整合mybatis的配置
mybatis.type-aliases-package=com.ppdai.shardingjdbc.entity

#多数据源$->{0..N}.逻辑表名$->{0..N} 相同表
spring.shardingsphere.sharding.tables.t_order.actual-data-nodes=ds$->{0..1}.t_order$->{0..1}

#多数据源$->{0..N}.逻辑表名$->{0..N} 不同表
spring.shardingsphere.sharding.tables.t_order.actual-data-nodes=ds0.t_order$->{0..1},ds1.t_order$->{2..4}

#主键的列名
spring.shardingsphere.sharding.tables.t_order.key-generator.column=id
#主键生成策略
spring.shardingsphere.sharding.tables.t_order.key-generator.type=SNOWFLAKE

CREATE TABLE `t_user0` (
  `id` bigint(20) DEFAULT NULL,
  `nickname` varchar(200) DEFAULT NULL,
  `password` varchar(200) DEFAULT NULL,
  `age` int(11) DEFAULT NULL,
  `sex` int(11) DEFAULT NULL,
  `birthday` varchar(100) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

CREATE TABLE `t_user1` (
  `id` bigint(20) DEFAULT NULL,
  `nickname` varchar(200) DEFAULT NULL,
  `password` varchar(200) DEFAULT NULL,
  `age` int(11) DEFAULT NULL,
  `sex` int(11) DEFAULT NULL,
  `birthday` varchar(100) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

@SpringBootTest
class ShardingJdbcApplicationTests {

    @Autowired
    private UserMapper userMapper;

    /**
     * sex:奇数
     * age:奇数
     * ds1.t_user1
     */
    @Test
    public void test01() {
        User user = new User();
        user.setNickname("zhangsan" + new Random().nextInt());
        user.setPassword("123456");
        user.setAge(17);
        user.setSex(1);
        user.setBirthday("1997-12-03");
        userMapper.addUser(user);
    }

    /**
     * sex:奇数
     * age:偶数
     * ds1.t_user0
     */
    @Test
    public void test02() {
        User user = new User();
        user.setNickname("zhangsan" + new Random().nextInt());
        user.setPassword("123456");
        user.setAge(18);
        user.setSex(1);
        user.setBirthday("1997-12-03");
        userMapper.addUser(user);
    }

    /**
     * sex:偶数
     * age:奇数
     * ds0.t_user1
     */
    @Test
    public void test03() {
        User user = new User();
        user.setNickname("zhangsan" + new Random().nextInt());
        user.setPassword("123456");
        user.setAge(17);
        user.setSex(2);
        user.setBirthday("1997-12-03");
        userMapper.addUser(user);
    }

    /**
     * sex:偶数
     * age:偶数
     * ds0.t_user0
     */
    @Test
    public void test04() {
        User user = new User();
        user.setNickname("zhangsan" + new Random().nextInt());
        user.setPassword("123456");
        user.setAge(18);
        user.setSex(2);
        user.setBirthday("1997-12-03");
        userMapper.addUser(user);
    }
}