Can not connect to kafka with conduktor? - docker

Question

I installed Kafka on a VM Ubuntu 18.0.4 with following compose file
version: '2'
networks:
kafka-net:
driver: bridge
services:
zookeeper-server:
image: 'bitnami/zookeeper:latest'
networks:
- kafka-net
ports:
- '2181:2181'
environment:
- ALLOW_ANONYMOUS_LOGIN=yes
kafka-server1:
image: 'bitnami/kafka:latest'
networks:
- kafka-net
ports:
- '9092:9092'
environment:
- KAFKA_CFG_ZOOKEEPER_CONNECT=zookeeper-server:2181
- KAFKA_CFG_ADVERTISED_LISTENERS=PLAINTEXT://:9092
- ALLOW_PLAINTEXT_LISTENER=yes
depends_on:
- zookeeper-server
kafka-server2:
image: 'bitnami/kafka:latest'
networks:
- kafka-net
ports:
- '9093:9092'
environment:
- KAFKA_CFG_ZOOKEEPER_CONNECT=zookeeper-server:2181
- KAFKA_CFG_ADVERTISED_LISTENERS=PLAINTEXT://:9093
- ALLOW_PLAINTEXT_LISTENER=yes
depends_on:
- zookeeper-server
It installed without any problem.
sudo docker container ls
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
39f38caf57cb bitnami/kafka:latest "/entrypoint.sh /run…" 3 hours ago Up 5 minutes 0.0.0.0:9092->9092/tcp kafka_kafka-server1_1
088a703b5b76 bitnami/kafka:latest "/entrypoint.sh /run…" 3 hours ago Up 3 hours 0.0.0.0:9093->9092/tcp kafka_kafka-server2_1
6a754bda47ea bitnami/zookeeper:latest "/entrypoint.sh /run…" 3 hours ago Up 3 hours 2888/tcp, 3888/tcp, 0.0.0.0:2181->2181/tcp, 8080/tcp kafka_zookeeper-server_1
Now, I want to connect to my Kafka on my VM with the following setting:
I test it from localhost with the following
root#ubuntu:~# kafkacat -b 192.168.179.133:9092 -L
Metadata for all topics (from broker -1: 192.168.179.133:9092/bootstrap):
1 brokers:
broker 1001 at localhost:9092
0 topics:
But in my windows 10 I can not connect to 192.168.179.133:9092 with Conduktor
As you see it returns error.
Test ZK is OK but Test kafka Connectivity raise the error !

Answer 1

You should change KAFKA_CFG_ADVERTISED_LISTENERS if your conductor is not installed in the same machine as Kafka cluster installed.
It should be like this for kafka-server1:
KAFKA_CFG_ADVERTISED_LISTENERS=PLAINTEXT://192.168.179.33:9092
and kafka-server2:
KAFKA_CFG_ADVERTISED_LISTENERS=PLAINTEXT://192.168.179.33:9093
Note: You should consider to add both kafka servers in conductor for redundancy.
You can check this for more information.