将Kafka消息流式传输到MySQL数据库

Question

我想将Kafka消息写入MySQL数据库。在this链接中有一个示例。在那个例子中，apache flume用于消费消息并将其写入MySQL。我使用相同的代码，当我运行flume-ng agent和event始终成为null

而且我flume.conf.properties文件是：

agent.sources=kafkaSrc 
agent.channels=channel1 
agent.sinks=jdbcSink 

agent.channels.channel1.type=org.apache.flume.channel.kafka.KafkaChannel 
agent.channels.channel1.brokerList=localhost:9092 
agent.channels.channel1.topic=kafkachannel 
agent.channels.channel1.zookeeperConnect=localhost:2181 
agent.channels.channel1.capacity=10000 
agent.channels.channel1.transactionCapacity=1000 
agent.channels.channel1.parseAsFlumeEvent=false 


agent.sources.kafkaSrc.type = org.apache.flume.source.kafka.KafkaSource 
agent.sources.kafkaSrc.channels = channel1 
agent.sources.kafkaSrc.zookeeperConnect = localhost:2181 
agent.sources.kafkaSrc.topic = kafka-mysql 

agent.sinks.jdbcSink.type = com.stratio.ingestion.sink.jdbc.JDBCSink 
agent.sinks.jdbcSink.connectionString = jdbc:mysql://127.0.0.1:3306/test?useSSL=false 
agent.sinks.jdbcSink.username=root 
agent.sinks.jdbcSink.password=pass 
agent.sinks.jdbcSink.batchSize = 10 
agent.sinks.jdbcSink.channel =channel1 
agent.sinks.jdbcSink.sqlDialect=MYSQL 
agent.sinks.jdbcSink.driver=com.mysql.jdbc.Driver 
agent.sinks.jdbcSink.sql=INSERT INTO kafkamsg(msg) VALUES(${body:varchar}) 

我哪里错了？

谢谢。

Answer 1

在我的退役示例中，水槽会听到kafka为kafka-mysql的话题。但是，此代码适用于kafkachannel主题。所以我们需要产生消息到kafkachannel的话题，我不知道为什么。