首次尝试使用现有的 Kafka 部署运行 Kafka Connect。使用 SASL_PLAINTEXT 和 kerberos 身份验证。
我第一次尝试开始时connect-distributed，我看到：
ERROR Uncaught exception in herder work thread, exiting: (org.apache.kafka.connect.runtime.distributed.DistributedHerder:227)
org.apache.kafka.common.errors.TimeoutException: Timeout expired while fetching topic metadata
如果我立即第二次运行，而不做任何更改，我会看到：
ERROR Uncaught exception in herder work thread, exiting: (org.apache.kafka.connect.runtime.distributed.DistributedHerder:227)
org.apache.kafka.common.errors.TopicAuthorizationException: Not authorized to access topics: [Offsets]
这是可重现的。
工人配置：
producer.interceptor.classes=io.confluent.monitoring.clients.interceptor.MonitoringProducerInterceptor
producer.interceptor.classes=io.confluent.monitoring.clients.interceptor.MonitoringConsumerInterceptor
bootstrap.servers=mybroker:9092
rest.port=28082
group.id=some-group
config.storage.topic=Configs
offset.storage.topic=Offsets
status.storage.topic=Status
key.converter=org.apache.kafka.connect.json.JsonConverter
value.converter=org.apache.kafka.connect.json.JsonConverter
internal.key.converter=org.apache.kafka.connect.json.JsonConverter
internal.value.converter=org.apache.kafka.connect.json.JsonConverter
rest.advertised.host.name=localhost
log4j.root.loglevel=INFO
security.protocol=SASL_PLAINTEXT
sasl.kerberos.service.name=kafka
sasl.mechanism=GSSAPI
consumer.security.protocol=SASL_PLAINTEXT
consumer.sasl.kerberos.service.name=kafka
consumer.sasl.mechanism=GSSAPI
producer.security.protocol=SASL_PLAINTEXT
producer.sasl.kerberos.service.name=kafka
producer.sasl.mechanism=GSSAPI