Flink-cdc 同步mysql数据

下载地址：https://github.com/ververica/flink-cdc-connectors/releases

这里下载2.2.0版本：https://github.com/ververica/flink-cdc-connectors/archive/refs/tags/release-2.2.0.zip

下载完成后，在 pom.xml 中找到这一项：flink.version ，修改 flink 版本号为：

<flink.version>1.13.6</flink.version>

自行打包编译

通过flink-cdc 同步mysql数据

1、flink集群准备

wget http://mirrors.cloud.tencent.com/apache/flink/flink-1.13.6/flink-1.13.6-bin-scala_2.11.tgz
tar zxvf flink-1.13.6-bin-scala_2.11.tgz

将打包好的 flink-sql-connector-mysql-cdc-2.2-SNAPSHOT.jar 包放入到flink的lib目录下
启动集群

cd flink-1.13.6
bin/start-cluster.sh

2、mysql环境准备

CREATE DATABASE mydb;

USE mydb;

CREATE TABLE products (
       id INTEGER NOT NULL AUTO_INCREMENT PRIMARY KEY,
       name VARCHAR(255) NOT NULL,
       description VARCHAR(512)
     );

ALTER TABLE products AUTO_INCREMENT = 101;

INSERT INTO products
     VALUES (default,"scooter","Small 2-wheel scooter"),
            (default,"car battery","12V car battery"),
            (default,"12-pack drill bits","12-pack of drill bits with sizes ranging from #40 to #3"),
            (default,"hammer","12oz carpenter's hammer"),
            (default,"hammer","14oz carpenter's hammer"),
            (default,"hammer","16oz carpenter's hammer"),
            (default,"rocks","box of assorted rocks"),
            (default,"jacket","water resistent black wind breaker"),
            (default,"spare tire","24 inch spare tire");

3、启动flinksql client

cd /opt/flink-1.13.6
bin/sql-client.sh

4、在flinksql client中执行命令

Flink SQL> SET execution.checkpointing.interval = 3s
Flink SQL> CREATE TABLE products (
     id INT,
     name STRING,
     description STRING,
     PRIMARY KEY (id) NOT ENFORCED
   ) WITH (
     'connector' = 'mysql-cdc',
     'hostname' = '自己的ip地址',
     'port' = '3306',
     'username' = 'root',
     'password' = '密码',
     'database-name' = 'mydb',
     'table-name' = 'products'
   );

Flink SQL> select * from products;

5、在 MySQL 客户端继续插入数据

INSERT INTO products VALUES (default,"scooter1","Small 2-wheel scooter");
INSERT INTO products VALUES (default,"scooter2","Small 2-wheel scooter");
INSERT INTO products VALUES (default,"scooter3","Small 2-wheel scooter");
INSERT INTO products VALUES (default,"scooter4","Small 2-wheel scooter");

4、在flinksql client中查看数据

select * from products;

可以查看到数据变化