Connecting two dockerized kafka clusters - docker

Question

How connect two kafka clusters on different VM's together ?
On my Windows maschine with the IP-Address: 192.168.2.22
i downloaded docker-compose.yml from https://github.com/conduktor/kafka-stack-docker-compose/blob/master/zk-single-kafka-single.yml and started it in a cmd-console with docker-compose up -d
Create Topic:
docker exec kafka1 kafka-topics --bootstrap-server localhost:9092 --create --topic my-Windows-Topic-1
Check access to Topic: in different ways (but in the same cmd-console)
docker exec kafka1 kafka-topics --bootstrap-server localhost:9092 --list
docker exec kafka1 kafka-topics --bootstrap-server localhost:19092 --list
docker exec kafka1 kafka-topics --bootstrap-server localhost:29092 --list
docker exec kafka1 kafka-topics --bootstrap-server 192.168.2.22:9092 --list
docker exec kafka1 kafka-topics --bootstrap-server 192.168.2.22:29092 --list
docker run --rm confluentinc/cp-kafka bash -c "kafka-topics --bootstrap-server 192.168.2.22:9092 --list"
docker run --rm confluentinc/cp-kafka bash -c "kafka-topics --bootstrap-server 192.168.2.22:29092 --list"
all the above commands show the same output so far
my-Windows-Topic-1
Now i change to a Linux-Virtual-Maschine with IP: 192.168.94.130
and again
Check access to the Windows Topic:
docker run --rm confluentinc/cp-kafka bash -c "kafka-topics --bootstrap-server 192.168.2.22:9092 --list"
my-Windows-Topic-1
So far everything is fine. I have access to the topic from internal and external!
(Still from the Linux console)
Now i'm creating a second independent cluster in the same way as above:
downloaded https://github.com/conduktor/kafka-stack-docker-compose/blob/master/zk-single-kafka-single.yml and started with docker-compose up -d
Create Linux Topic:
docker exec kafka1 kafka-topics --bootstrap-server localhost:9092 --create --topic my-Linux-Topic
Check Topic:
$ docker exec kafka1 kafka-topics --bootstrap-server localhost:9092 --list
my-Linux-Topic
How to configure both clusters to display both outputs?
my-Windows-Topic-1
and
my-Linux-Topic
at the same time ?

Answer 1

I'm having a hard-time following the question, but if you want multiple brokers, then the repo you've linked to already has an example of that (in one Kafka cluster)
If you have multiple compose files, then they will not share a Docker network, by default, and so will be unable to reach each other.
If you want to connect them, then use a bridge network
configure both clusters to display both output ... at the same time?
You can't; you can only list topics of one cluster at a time.
You could use Conduktor Platform to run a UI where you can link both clusters to it, then display topics there, without using any terminal commands.