Socket server failed to bind to kafka:29092: Cannot assign requested address - docker

Question

I am trying to create a kafka server from the following yaml file:
version: "3.9"
services:
zookeeper:
image: 'bitnami/zookeeper:latest'
ports:
- '2181:2181'
environment:
- ALLOW_ANONYMOUS_LOGIN=yes
kafka:
image: 'bitnami/kafka:latest'
ports:
- '9092:9092'
environment:
- KAFKA_BROKER_ID=1
- ALLOW_PLAINTEXT_LISTENER=yes
- KAFKA_CFG_ZOOKEEPER_CONNECT=zookeeper:2181
- KAFKA_LISTENERS=PLAINTEXT://kafka:29092,PLAINTEXT_HOST://localhost:9092
- KAFKA_LISTENER_SECURITY_PROTOCOL_MAP=PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT
- KAFKA_INTER_BROKER_LISTENER_NAME=PLAINTEXT
- KAFKA_ADVERTISED_LISTENERS=PLAINTEXT://kafka:29092,PLAINTEXT_HOST://localhost:9092
depends_on:
- zookeeper
But I am getting an error:
ERROR [KafkaServer id=1] Fatal error during KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServer)
org.apache.kafka.common.KafkaException: Socket server failed to bind to kafka:29092: Cannot assign requested address.
at kafka.network.Acceptor.openServerSocket(SocketServer.scala:667)
at kafka.network.Acceptor.<init>(SocketServer.scala:560)
at kafka.network.SocketServer.createAcceptor(SocketServer.scala:288)
at kafka.network.SocketServer.$anonfun$createDataPlaneAcceptorsAndProcessors$1(SocketServer.scala:261)
at kafka.network.SocketServer.$anonfun$createDataPlaneAcceptorsAndProcessors$1$adapted(SocketServer.scala:259)
at scala.collection.mutable.ResizableArray.foreach(ResizableArray.scala:62)
at scala.collection.mutable.ResizableArray.foreach$(ResizableArray.scala:55)
at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:49)
at kafka.network.SocketServer.createDataPlaneAcceptorsAndProcessors(SocketServer.scala:259)
at kafka.network.SocketServer.startup(SocketServer.scala:131)
at kafka.server.KafkaServer.startup(KafkaServer.scala:296)
at kafka.Kafka$.main(Kafka.scala:109)
at kafka.Kafka.main(Kafka.scala)
Caused by: java.net.BindException: Cannot assign requested address
at java.base/sun.nio.ch.Net.bind0(Native Method)
at java.base/sun.nio.ch.Net.bind(Net.java:455)
at java.base/sun.nio.ch.Net.bind(Net.java:447)
at java.base/sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:227)
at java.base/sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:80)
at java.base/sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:73)
at kafka.network.Acceptor.openServerSocket(SocketServer.scala:663)
... 12 more
What is wrong with my configuration?

Answer 1

The error is with binding the listeners. KAFKA_LISTENERS is incorrect for the bitnami containers. All broker properties should start with KAFKA_CFG, as written in their README.
Also, you should set the KAFKA_CFG_LISTENERS to use IP 0.0.0.0 to accept all traffic on all interfaces

Answer 2

For what it's worth, this was the right configuration for me:
version: "3.9"
services:
zookeeper:
image: 'bitnami/zookeeper:latest'
deploy:
replicas: 1
ports:
- "2181:2181"
environment:
- ALLOW_ANONYMOUS_LOGIN=yes
kafka:
image: 'bitnami/kafka:latest'
deploy:
replicas: 1
ports:
- 9092:9092
depends_on:
- zookeeper
environment:
KAFKA_CFG_ZOOKEEPER_CONNECT: zookeeper:2181
KAFKA_CFG_LISTENERS: INTERNAL://:9093,OUTSIDE://:9092
KAFKA_CFG_ADVERTISED_LISTENERS: INTERNAL://kafka:9093,OUTSIDE://sub.domain.ltd:9092
KAFKA_CFG_LISTENER_SECURITY_PROTOCOL_MAP: INTERNAL:PLAINTEXT,OUTSIDE:PLAINTEXT
KAFKA_CFG_INTER_BROKER_LISTENER_NAME: INTERNAL
ALLOW_PLAINTEXT_LISTENER: "yes"