Can't connect Kafka to Zookeeper - docker

Question

From docker-compose I got this yml:
version: '2'
services:
zookeeper:
container_name: zookeeper
image: confluentinc/cp-zookeeper:3.1.1
ports:
- "2080:2080"
environment:
- ZOOKEEPER_CLIENT_PORT=2080
- ZOOKEEPER_TICK_TIME=2000
kafka:
container_name: kafka
image: confluentinc/cp-kafka:3.1.1
ports:
- "9092:9092"
environment:
- KAFKA_CREATE_TOPICS=Topic1:1
- KAFKA_ZOOKEEPER_CONNECT=192.168.99.100:2080
- KAFKA_ADVERTISED_LISTENERS=PLAINTEXT://192.168.99.100:9092
depends_on:
- zookeeper
schema-registry:
container_name: schema-registry
image: confluentinc/cp-schema-registry:3.1.1
ports:
- "8081:8081"
environment:
- SCHEMA_REGISTRY_KAFKASTORE_CONNECTION_URL=192.168.99.100:2080
- SCHEMA_REGISTRY_HOST_NAME=localhost
depends_on:
- zookeeper
- kafka
When I stand up this docker the console output ends with:
schema-registry | Error while running kafka-ready.
schema-registry | org.apache.kafka.common.errors.TimeoutException: Timed out waiting for Kafka to create /brokers/ids in Zookeeper. timeout (ms) = 40000
schema-registry exited with code 1
It seems like kafka never connect Zookeper or something like that, does anyone knows why this is happening?

Answer 1

Does changing
SCHEMA_REGISTRY_KAFKASTORE_CONNECTION_URL=192.168.99.100:2080
into
SCHEMA_REGISTRY_KAFKASTORE_CONNECTION_URL=zookeeper:2080
help?
Additionally, KAFKA_ZOOKEEPER_CONNECT=192.168.99.100:2080 should mention zookeeper as well, instead of an IP address. Or, how can you be sure of that IP address?
KAFKA_ADVERTISED_LISTENERS=PLAINTEXT://192.168.99.100:9092 mentions an IP address you might not be able to guarantee as well. For the latter, that IP address could be changed into kafka.
I also had challenges in getting Kafka and Zookeeper to work in Docker (via Docker Compose). In the end, https://github.com/confluentinc/cp-docker-images/blob/5.0.0-post/examples/kafka-single-node/docker-compose.yml worked for me. You could use that as a source of inspiration.