Kafka topic creation: Timed out waiting for a node assignment

Question

I've got a local Kafka running using the following docker-compose.yml file:

version: '2'
services:
  zookeeper:
    image: "confluentinc/cp-zookeeper:5.0.1"
    environment:
      ZOOKEEPER_CLIENT_PORT: 2181
      ZOOKEEPER_TICK_TIME: 2000

  kafka:
    image: "confluentinc/cp-enterprise-kafka:5.0.1"
    ports:
      - '9092:9092'
    depends_on:
      - zookeeper
    environment:
      KAFKA_BROKER_ID: 1
      KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
      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
      KAFKA_METRIC_REPORTERS: io.confluent.metrics.reporter.ConfluentMetricsReporter
      KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 100

Trying to run a basic create topic using kafka-client 2.1.0 in Scala:

val props = new Properties()
props.setProperty(AdminClientConfig.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092")

val adminClient: AdminClient = AdminClient.create(props)
val newTopic = new NewTopic("test", 1, 1.toShort)
val topicsF = adminClient.createTopics(List(newTopic).asJavaCollection)
val result = topicsF.all().get()

but after some time I get:

org.apache.kafka.common.errors.TimeoutException: Timed out waiting for a node assignment.

I can create a topic using the command line:

kafka-topics --create \
    --zookeeper localhost:2181 \
    --replication-factor 1 \
    --partitions 1 \
    --topic test
Created topic "test".

kafka AdminClient API Timed out waiting for node assignment describes a similar problem using Java but the comment suggests that a system restart fixed the issue which is not the case on my side.

Answer 1

If you're running Kafka in Docker (or similar) you need to configure the listeners correctly. This article describes it in detail.

Here's an example of a Docker Compose that you can use to access Kafka from your host machine.

Disclaimer: I wrote the article :)