我使用docker compose启动了三个服务，kafka、zookeeper和confluent kafka s3 sink连接器。
不知何故，连接器(更具体地说，连接分布式脚本(一直试图连接到localhost:9092，并忽略从属性文件中正确读取的配置。
正如您所看到的，调试信息显示AdminClientConfig值，该值具有正确的boostrap.servers。但后来，AdminClient不知何故一直在尝试127.0.0.1:9092。
是连接器中的错误吗？
2022-08-10 16:37:30,626] INFO Creating Kafka admin client (org.apache.kafka.connect.util.ConnectUtils)
[2022-08-10 16:37:30,634] INFO AdminClientConfig values:
bootstrap.servers = [172.18.0.3:9092]
client.dns.lookup = default
client.id =
connections.max.idle.ms = 300000
metadata.max.age.ms = 300000
metric.reporters = []
metrics.num.samples = 2
metrics.recording.level = INFO
metrics.sample.window.ms = 30000
receive.buffer.bytes = 65536
reconnect.backoff.max.ms = 1000
reconnect.backoff.ms = 50
request.timeout.ms = 120000
retries = 5
retry.backoff.ms = 100
sasl.client.callback.handler.class = null
sasl.jaas.config = null
sasl.kerberos.kinit.cmd = /usr/bin/kinit
sasl.kerberos.min.time.before.relogin = 60000
sasl.kerberos.service.name = null
sasl.kerberos.ticket.renew.jitter = 0.05
sasl.kerberos.ticket.renew.window.factor = 0.8
sasl.login.callback.handler.class = null
sasl.login.class = null
sasl.login.refresh.buffer.seconds = 300
sasl.login.refresh.min.period.seconds = 60
sasl.login.refresh.window.factor = 0.8
sasl.login.refresh.window.jitter = 0.05
sasl.mechanism = GSSAPI
security.protocol = PLAINTEXT
security.providers = null
send.buffer.bytes = 131072
ssl.cipher.suites = null
ssl.enabled.protocols = [TLSv1.2, TLSv1.1, TLSv1]
ssl.endpoint.identification.algorithm = https
ssl.key.password = null
ssl.keymanager.algorithm = SunX509
ssl.keystore.location = null
ssl.keystore.password = null
ssl.keystore.type = JKS
ssl.protocol = TLS
ssl.provider = null
ssl.secure.random.implementation = null
ssl.trustmanager.algorithm = PKIX
ssl.truststore.location = null
ssl.truststore.password = null
ssl.truststore.type = JKS
(org.apache.kafka.clients.admin.AdminClientConfig)
[2022-08-10 16:37:30,747] WARN The configuration 'config.storage.topic' was supplied but isn't a known config. (org.apache.kafka.clients.admin.AdminClientConfig)
[2022-08-10 16:37:30,747] WARN The configuration 'group.id' was supplied but isn't a known config. (org.apache.kafka.clients.admin.AdminClientConfig)
[2022-08-10 16:37:30,747] WARN The configuration 'status.storage.topic' was supplied but isn't a known config. (org.apache.kafka.clients.admin.AdminClientConfig)
[2022-08-10 16:37:30,747] WARN The configuration 'plugin.path' was supplied but isn't a known config. (org.apache.kafka.clients.admin.AdminClientConfig)
[2022-08-10 16:37:30,747] WARN The configuration 'internal.key.converter.schemas.enable' was supplied but isn't a known config. (org.apache.kafka.clients.admin.AdminClientC
onfig)
[2022-08-10 16:37:30,747] WARN The configuration 'kafka.consumer.group.id' was supplied but isn't a known config. (org.apache.kafka.clients.admin.AdminClientConfig)
[2022-08-10 16:37:30,747] WARN The configuration 'internal.key.converter' was supplied but isn't a known config. (org.apache.kafka.clients.admin.AdminClientConfig)
[2022-08-10 16:37:30,747] WARN The configuration 'offset.storage.file.filename' was supplied but isn't a known config. (org.apache.kafka.clients.admin.AdminClientConfig)
[2022-08-10 16:37:30,747] WARN The configuration 'internal.value.converter.schemas.enable' was supplied but isn't a known config. (org.apache.kafka.clients.admin.AdminClien
tConfig)
[2022-08-10 16:37:30,748] WARN The configuration 'internal.value.converter' was supplied but isn't a known config. (org.apache.kafka.clients.admin.AdminClientConfig)
[2022-08-10 16:37:30,748] WARN The configuration 'offset.storage.topic' was supplied but isn't a known config. (org.apache.kafka.clients.admin.AdminClientConfig)
[2022-08-10 16:37:30,749] WARN The configuration 'value.converter' was supplied but isn't a known config. (org.apache.kafka.clients.admin.AdminClientConfig)
[2022-08-10 16:37:30,749] WARN The configuration 'key.converter' was supplied but isn't a known config. (org.apache.kafka.clients.admin.AdminClientConfig)
[2022-08-10 16:37:30,750] INFO Kafka version: 5.4.1-ccs (org.apache.kafka.common.utils.AppInfoParser)
[2022-08-10 16:37:30,750] INFO Kafka commitId: fd1e543386b47352 (org.apache.kafka.common.utils.AppInfoParser)
[2022-08-10 16:37:30,751] INFO Kafka startTimeMs: 1660149450749 (org.apache.kafka.common.utils.AppInfoParser)
[2022-08-10 16:37:31,031] WARN [AdminClient clientId=adminclient-1] Connection to node 1 (/127.0.0.1:9092) could not be established. Broker may not be available. (org.apach
e.kafka.clients.NetworkClient)
不知何故一直在尝试127.0.0.1:9092
因为这是您在broker的server.properties上设置的advertised.listeners。
https://www.confluent.io/blog/kafka-listeners-explained/
注意：如果您使用Docker，请不要使用IP地址，例如172.18.x.x