Itellij kafka plugin consumer of kafka on docker WSL2

I work on Windows and WSL2.

I installed on WSL2 a Kafka image in a Docker container. It works well : from WSL2 :

docker compose up works
I produce and consume messages via the topic mytopic with kafka-console-producer.sh and kafka-console-consumer.sh So this proves that it works from WSL2

I used Intellij from Windows and I have kafka plugin. I would like to add a kafka broker with the following configuration. When I test connection there is a connection error because : BdtHostUnavailableException: URL "172.23.60.159:9092" is not available

I tried many solution without success :

I disabled ipv6 on WSL2
I change configuration with 172.23.60.159 and 172.17.0.1 on Intellij and docker-compose.yml

Does anyone have a clue to help me?

hostname -I
eth0 : 172.23.60.159
docker : 172.17.0.1

docker-compose.yml

version: '3.3'
services:
  kafka-collect:
    image: apache/kafka:4.0.0
    container_name: kafka-collect
    ports:
        - 9092:9092
    environment:
      KAFKA_NODE_ID: 1
      KAFKA_PROCESS_ROLES: broker,controller
      KAFKA_LISTENERS: PLAINTEXT://172.23.60.159:9092,CONTROLLER://localhost:9093
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://172.23.60.159:9092
      KAFKA_CONTROLLER_LISTENER_NAMES: CONTROLLER
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: CONTROLLER:PLAINTEXT,PLAINTEXT:PLAINTEXT
      KAFKA_CONTROLLER_QUORUM_VOTERS: 1@localhost:9093
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
      KAFKA_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: 1
      KAFKA_TRANSACTION_STATE_LOG_MIN_ISR: 1
      KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 0
      KAFKA_NUM_PARTITIONS: 3
      CLUSTER_ID: MkU3OEVBNTcwNTJENDM2Qk

Solution

Change these:

KAFKA_LISTENERS: PLAINTEXT://0.0.0.0:9092,CONTROLLER://localhost:9093
KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka:9092

You can now connect to localhost:9092 or 127.0.0.1:9092 as bootstrap server in intellij.

As you are exposing the port 9092, you must point to localhost's mapped port, which is also 9092.

Not mandatory:

Assuming you're on Windows, add this line to the hosts file in C:\Windows\System32\drivers\etc\hosts (/etc/hosts in Linux)

127.0.0.1 kafka

Change the connection in Intellij so it points to kafka:9092 as bootstrap server.

Adding kafka as a host helps directing to the advertised listener defined in the server properties