I can't connect to Kafka in OS X

Hi.

I’d been having problems launching Kafka (more about this in this recent thread: https://groups.google.com/forum/?utm_medium=email&utm_source=footer#!topic/confluent-platform/DRd_XfeW0C8).

Now, I launched Kafka, however, I can’t connect it:

# the kafka container uses this port
$ telnet localhost 29092
Trying ::1...
telnet: connect to address ::1: Connection refused
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused
telnet: Unable to connect to remote host

PS: I’m trying this docker-compose.yml.

This is my altered docker-compose.yml file:

I tried to expose the ports, however, I think, in network host mode, it can’t be done.

---
version: '2'
services:
  zookeeper:
    image: confluentinc/cp-zookeeper:latest
    network_mode: host
    environment:
      ZOOKEEPER_CLIENT_PORT: 32181
      ZOOKEEPER_TICK_TIME: 2000
    extra_hosts:
      - "moby:127.0.0.1"

  kafka:
    image: confluentinc/cp-kafka:latest
    network_mode: host
    ports:
      - "29092:29092"
    depends_on:
      - zookeeper
    environment:
      KAFKA_BROKER_ID: 1
      KAFKA_ZOOKEEPER_CONNECT: localhost:32181
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://localhost:29092
    extra_hosts:
      - "moby:127.0.0.1"

[tmendenhall]

I was able to have some success on macOS (docker community version) using the following compose file:

---
version: '2'
services:
  zookeeper:
    image: confluentinc/cp-zookeeper:3.2.1
    ports:
     - 32181:32181
    environment:
      ZOOKEEPER_CLIENT_PORT: 32181
      ZOOKEEPER_TICK_TIME: 2000
    extra_hosts:
      - "moby:127.0.0.1"
      - "localhost: 127.0.0.1"

  kafka:
    image: confluentinc/cp-kafka:3.2.1
    ports:
     - 29092:29092
    depends_on:
      - zookeeper
    environment:
      KAFKA_BROKER_ID: 1
      KAFKA_ZOOKEEPER_CONNECT: zookeeper:32181
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://localhost:29092
      KAFKA_AUTO_CREATE_TOPICS_ENABLE: "false"
      KAFKA_DELETE_TOPIC_ENABLE: "true"
    extra_hosts:
      - "moby:127.0.0.1"
      - "localhost: 127.0.0.1"

Which allows kafka to connect to the zookeeper instance using the bridge network but both remain accessible to a Java application running on my development machine at localhost and the exposed correct port. I hope this proves useful.

Note: I am not using the most recent version of the cp-zookeeper and cp-kafka docker images.

[inancgumus]

Probably, noone is looking at these issues…