KRAFT mode does not work in cluster about cp-all-in-one HOT 3 OPEN

I think I faced this before yes.

In /tmp/update_run.sh you might have some random cluster id or something like that?
Like the random-uuid here

When you're using two brokers, you can't use a random cluster_id for each of the brokers (that leads to the error you're seeing: "inconsistent cluster id"), in that case, you'd need to use a "fixed" cluster id of your choice for both brokers.

Be careful though, that the cluster id must be properly formatted. For example here I used one I picked from the docs iirc.

If you want to use your own valid cluster_id, you can try:

docker run --rm -it --entrypoint /bin/kafka-storage confluentinc/cp-kafka:7.2.1 random-uuid

and change update-run.sh to use it (as I linked before)

Works on my machine™

Alternatively, you could refer to an environment variable in update_run.sh (like CLUSTER_ID or KAFKA_CLUSTER_ID or something) and set it in your docker-compose.yml along with other env variables there. Whatever you prefer.

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Checkout the following article. It can help you to run a Kafka Cluster in KRaft mode.

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I think the issue should be closed.

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