Kafka Connect：找不到合适的驱动程序

Question

我正在尝试使用 JDBC-sink 连接器将 Kafka 与 Postgres Sink 结合使用。

异常：

INFO Unable to connect to database on attempt 1/3. Will retry in 10000 ms. (io.confluent.connect.jdbc.util.CachedConnectionProvider:91)
java.sql.SQLException: No suitable driver found for jdbc:postgresql://localhost:5432/casb
at java.sql.DriverManager.getConnection(DriverManager.java:689)
    at java.sql.DriverManager.getConnection(DriverManager.java:247)
    at io.confluent.connect.jdbc.util.CachedConnectionProvider.newConnection(CachedConnectionProvider.java:85)
    at io.confluent.connect.jdbc.util.CachedConnectionProvider.getValidConnection(CachedConnectionProvider.java:68)
    at io.confluent.connect.jdbc.sink.JdbcDbWriter.write(JdbcDbWriter.java:56)
    at io.confluent.connect.jdbc.sink.JdbcSinkTask.put(JdbcSinkTask.java:69)
    at org.apache.kafka.connect.runtime.WorkerSinkTask.deliverMessages(WorkerSinkTask.java:495)
    at org.apache.kafka.connect.runtime.WorkerSinkTask.poll(WorkerSinkTask.java:288)
    at org.apache.kafka.connect.runtime.WorkerSinkTask.iteration(WorkerSinkTask.java:198)
    at org.apache.kafka.connect.runtime.WorkerSinkTask.execute(WorkerSinkTask.java:166)
    at org.apache.kafka.connect.runtime.WorkerTask.doRun(WorkerTask.java:170)
    at org.apache.kafka.connect.runtime.WorkerTask.run(WorkerTask.java:214)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)

Sink.properties:

name=test-sink
connector.class=io.confluent.connect.jdbc.JdbcSinkConnector
tasks.max=1
topics=fp_test
connection.url=jdbc:postgresql://localhost:5432/casb
connection.user=admin
connection.password=***
auto.create=true

我设置了plugin.path=/usr/share/java/kafka-connect-jdbc

在 /usr/share/java/kafka-connect-jdbc 我有以下文件：

kafka-connect-jdbc-4.0.0.jar、postgresql-9.4-1206-jdbc41.jar、sqlite-jdbc-3.8.11.2.jar 和其他一些基本上与 confluent 一起打包的罐子。

然后我下载了 postgres-jdbc 驱动程序 jar postgresql-42.2.2.jar，将其复制到同一文件夹中并再次尝试。还是一样的异常。

请帮我解决这个问题。

Answer 1

设置 plugin.path=/usr/share/java 和 CLASSPATH=/usr/share/java/kafka-connect-jdbc/ 解决了问题。

Kafka Connect：找不到合适的驱动程序

Kafka Connect: No suitable driver found

postgresql

apache-kafka

apache-kafka-connect

confluent-platform