Hi, I have a question regarding connecting to kafka broker from docker.
I have zookeeper and kafka broker running on my local machine. I have a docker container running on the same local machine with --network=host I want to send message from inside the docker container to my local kafka broker. >From inside the docker, I can connect to zookeeper and seek the existing topicsby running: `./bin/kafka-topics.sh --zookeeper localhost:2181 --list` But I cannot connect to the kafka broker with either the `kafka-console-consumer.sh` or `kafka-console-producer.sh`, by running : `bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic test` I get: ``` [2019-10-17 19:12:04,097] WARN [Consumer clientId=consumer-1, groupId=console-consumer-99825] Error connecting to node aictjt:9092 (id: 0 rack: null) (org.apache.kafka.clients.NetworkClient) java.net.UnknownHostException: aictjt at java.net.InetAddress.getAllByName0(InetAddress.java:1281) at java.net.InetAddress.getAllByName(InetAddress.java:1193) at java.net.InetAddress.getAllByName(InetAddress.java:1127) at org.apache.kafka.clients.ClientUtils.resolve(ClientUtils.java:104) at org.apache.kafka.clients.ClusterConnectionStates$NodeConnectionState.currentAddress(ClusterConnectionStates.java:403) at org.apache.kafka.clients.ClusterConnectionStates$NodeConnectionState.access$200(ClusterConnectionStates.java:363) at org.apache.kafka.clients.ClusterConnectionStates.currentAddress(ClusterConnectionStates.java:151) at org.apache.kafka.clients.NetworkClient.initiateConnect(NetworkClient.java:943) at org.apache.kafka.clients.NetworkClient.access$600(NetworkClient.java:68) at org.apache.kafka.clients.NetworkClient$DefaultMetadataUpdater.maybeUpdate(NetworkClient.java:1114) at org.apache.kafka.clients.NetworkClient$DefaultMetadataUpdater.maybeUpdate(NetworkClient.java:1005) at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:537) at org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:262) at org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:233) at org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:224) at org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.awaitMetadataUpdate(ConsumerNetworkClient.java:161) at org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureCoordinatorReady(AbstractCoordinator.java:259) at org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.poll(ConsumerCoordinator.java:326) at org.apache.kafka.clients.consumer.KafkaConsumer.updateAssignmentMetadataIfNeeded(KafkaConsumer.java:1251) at org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1216) at org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1201) at kafka.tools.ConsoleConsumer$ConsumerWrapper.receive(ConsoleConsumer.scala:439) at kafka.tools.ConsoleConsumer$.process(ConsoleConsumer.scala:105) at kafka.tools.ConsoleConsumer$.run(ConsoleConsumer.scala:77) at kafka.tools.ConsoleConsumer$.main(ConsoleConsumer.scala:54) at kafka.tools.ConsoleConsumer.main(ConsoleConsumer.scala) ``` any help? Thanks. -Shuo
