FLink1.17-Kafka实时同步到MySQL实践

1．组件版本

2．Kafka生产数据

./kafka-console-producer.sh --broker-list hadoop01:9092,hadoop02:9092,hadoop03:9092 --topic   kafka_test_table2

>{"id":123,"test_age":33}

>{"id":125,"test_age":28}

>{"id":126,"test_age":18}

3．Kafka消费数据

./kafka-console-consumer.sh  --bootstrap-server  hadoop01:9092,hadoop02:9092:hadoop03:9092  --topic kafka_test_table2 --from-beginning

4．MySQL创建表

CREATE TABLE `test_table2` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`test_age` int(11) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=16 DEFAULT CHARSET=utf8;

5．Flink 启动任务

cd /data/flink-1.17.0/bin/

./start-cluster.sh

./sql-client.sh

set sql-client.execution.result-mode=tableau ;

create Table kafka_test_table2 (

id    int,

test_age   int

)

with (

'connector' = 'kafka',

'topic' = 'kafka_test_table2',

'scan.startup.mode' = 'earliest-offset',

'properties.bootstrap.servers' = 'hadoop01:9092,hadoop02:9092,hadoop03:9092',

'properties.group.id' = 'group01',

'format' = 'json'

);

Create Table rds_test_table2 (

id    int,

test_age   int,

PRIMARY KEY (id)  NOT ENFORCED

)

with (

'connector' = 'jdbc',

'url' = 'jdbc:mysql://192.168.132.22:3306/test?serverTimezone=Asia/Shanghai',

'driver' = 'com.mysql.cj.jdbc.Driver',

'username' = 'root',

'password' = 'Root@1234',

'table-name'= 'test_table2'

);

insert into  rds_test_table2  select * from  kafka_test_table2 ;

6．Flink WebUI

登录Flink WebUI页面，查看任务是否启动成功

点击查看任务是否报错

如果出现The server time zone value ‘�й���׼ʱ��’ is unrecognized or represents more than one time zone。在MySQL的url连接字符串中添加?serverTimezone=Asia/Shanghai即可解决。

7．MySQL验证

登录MySQL数据库，查看数据是否同步成功。