canal使用官方镜像，版本为1.1.5，即使配置了：kafka.bootstrap.servers，启动的时候检查日志仍发现抛出异常：
[pool-4-thread-1] ERROR c.a.o.canal.connector.kafka.producer.CanalKafkaProducer - java.util.concurrent.ExecutionException: org.apache.kafka.common.errors.TimeoutException: Failed to update metadata after 60000 ms.
java.lang.RuntimeException: java.util.concurrent.ExecutionException: org.apache.kafka.common.errors.TimeoutException: Failed to update metadata after 60000 ms.
at com.alibaba.otter.canal.connector.kafka.producer.CanalKafkaProducer.send(CanalKafkaProducer.java:184) ~[na:na]
at com.alibaba.otter.canal.server.CanalMQStarter.worker(CanalMQStarter.java:181) [canal.server-1.1.5.jar:na]
at com.alibaba.otter.canal.server.CanalMQStarter.access$100(CanalMQStarter.java:25) [canal.server-1.1.5.jar:na]
at com.alibaba.otter.canal.server.CanalMQStarter$CanalMQRunnable.run(CanalMQStarter.java:223) [canal.server-1.1.5.jar:na]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_181]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_181]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_181]
Caused by: java.util.concurrent.ExecutionException: org.apache.kafka.common.errors.TimeoutException: Failed to update metadata after 60000 ms.
at org.apache.kafka.clients.producer.KafkaProducer$FutureFailure.(KafkaProducer.java:1150) ~[na:na]
at org.apache.kafka.clients.producer.KafkaProducer.doSend(KafkaProducer.java:846) ~[na:na]
at org.apache.kafka.clients.producer.KafkaProducer.send(KafkaProducer.java:784) ~[na:na]
at org.apache.kafka.clients.producer.KafkaProducer.send(KafkaProducer.java:671) ~[na:na]
at com.alibaba.otter.canal.connector.kafka.producer.CanalKafkaProducer.produce(CanalKafkaProducer.java:268) ~[na:na]
at com.alibaba.otter.canal.connector.kafka.producer.CanalKafkaProducer.send(CanalKafkaProducer.java:261) ~[na:na]
at com.alibaba.otter.canal.connector.kafka.producer.CanalKafkaProducer.lambda$send$0(CanalKafkaProducer.java:156) ~[na:na]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_181]
... 3 common frames omitted
canal使用官方镜像，版本为1.1.5，即使配置了：kafka.bootstrap.servers，启动的时候检查日志仍发现抛出异常：
[pool-4-thread-1] ERROR c.a.o.canal.connector.kafka.producer.CanalKafkaProducer - java.util.concurrent.ExecutionException: org.apache.kafka.common.errors.TimeoutException: Failed to update metadata after 60000 ms.
java.lang.RuntimeException: java.util.concurrent.ExecutionException: org.apache.kafka.common.errors.TimeoutException: Failed to update metadata after 60000 ms.
at com.alibaba.otter.canal.connector.kafka.producer.CanalKafkaProducer.send(CanalKafkaProducer.java:184) ~[na:na]
at com.alibaba.otter.canal.server.CanalMQStarter.worker(CanalMQStarter.java:181) [canal.server-1.1.5.jar:na]
at com.alibaba.otter.canal.server.CanalMQStarter.access$100(CanalMQStarter.java:25) [canal.server-1.1.5.jar:na]
at com.alibaba.otter.canal.server.CanalMQStarter$CanalMQRunnable.run(CanalMQStarter.java:223) [canal.server-1.1.5.jar:na]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_181]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_181]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_181]
Caused by: java.util.concurrent.ExecutionException: org.apache.kafka.common.errors.TimeoutException: Failed to update metadata after 60000 ms.
at org.apache.kafka.clients.producer.KafkaProducer$FutureFailure.(KafkaProducer.java:1150) ~[na:na]
at org.apache.kafka.clients.producer.KafkaProducer.doSend(KafkaProducer.java:846) ~[na:na]
at org.apache.kafka.clients.producer.KafkaProducer.send(KafkaProducer.java:784) ~[na:na]
at org.apache.kafka.clients.producer.KafkaProducer.send(KafkaProducer.java:671) ~[na:na]
at com.alibaba.otter.canal.connector.kafka.producer.CanalKafkaProducer.produce(CanalKafkaProducer.java:268) ~[na:na]
at com.alibaba.otter.canal.connector.kafka.producer.CanalKafkaProducer.send(CanalKafkaProducer.java:261) ~[na:na]
at com.alibaba.otter.canal.connector.kafka.producer.CanalKafkaProducer.lambda$send$0(CanalKafkaProducer.java:156) ~[na:na]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_181]
... 3 common frames omitted