在MySQL中建立数据库school,在数据库中建立表student。 编写配置文件,将student表中的内容输出到控制台。启动Flume,在student表中插入数据,在Kafka消费者中查看相应数据。
时间: 2024-02-15 13:02:10 浏览: 148
好的,以下是一个简单的Flume配置文件示例,可以将MySQL中的数据传输到Kafka中:
```
# flume.conf
agent.sources = mysql-source
agent.channels = kafka-channel
agent.sinks = kafka-sink
# MySQL source configuration
agent.sources.mysql-source.type = org.apache.flume.source.jdbc.JdbcSource
agent.sources.mysql-source.jdbc.url = jdbc:mysql://localhost:3306/school
agent.sources.mysql-source.jdbc.user = your_username
agent.sources.mysql-source.jdbc.password = your_password
agent.sources.mysql-source.jdbc.driver = com.mysql.jdbc.Driver
agent.sources.mysql-source.batchSize = 100
agent.sources.mysql-source.sql = SELECT * FROM student
agent.sources.mysql-source.channels = kafka-channel
# Kafka sink configuration
agent.sinks.kafka-sink.type = org.apache.flume.sink.kafka.KafkaSink
agent.sinks.kafka-sink.kafka.bootstrap.servers = localhost:9092
agent.sinks.kafka-sink.kafka.topic = student
agent.sinks.kafka-sink.batchSize = 100
agent.sinks.kafka-sink.channel = kafka-channel
# Kafka channel configuration
agent.channels.kafka-channel.type = memory
agent.channels.kafka-channel.capacity = 10000
agent.channels.kafka-channel.transactionCapacity = 1000
# Start the agent
agent.sources.mysql-source.interceptors = i1
agent.sources.mysql-source.interceptors.i1.type = org.apache.flume.interceptor.TimestampInterceptor$Builder
agent.sources.mysql-source.interceptors.i1.preserveExisting = true
agent.sources.mysql-source.batchSize = 100
agent.sinks.kafka-sink.batchSize = 100
agent.sinks.kafka-sink.serializer = org.apache.kafka.common.serialization.StringSerializer
agent.sinks.kafka-sink.acks = 1
```
在启动Flume之前,需要先在MySQL中创建一个名为"school"的数据库,并在其中创建一个名为"student"的表,表结构和楼上提供的相同。然后,将上面的配置文件保存为"flume.conf",并使用以下命令启动Flume:
```
flume-ng agent --conf conf --conf-file flume.conf --name agent -Dflume.root.logger=INFO,console
```
这将启动Flume,并将student表中的数据传输到Kafka中。你可以使用Kafka消费者API进行订阅和消费,查看相应数据。