Kafka with Kraft post restart - re-generate clusterId

[shaitams]

When i restart kafka/kraft cluster, the nodePools (controller,broker) generated new clusterId that doesn't match the clusterId on kafka crd and on the meta.properties file in the storage.

How to prevent this?

[scholzj]

First, you should share your version, resources, logs etc.

[scholzj]

Yeah, you can do that with ZooKeeper-based cluster. There is a section i the doc describing it.

[shaitams]

Can you send the link to the instructions?

[shaitams]

Ans, what are the disadvantages with zookeeper based cluster?

[scholzj]

I don't have the link at hand. But if you go to the docs and search for recovery, you should find it. The advantage of the ZooKeeper-based Kafka cluster is that it is production-ready. KRaft is not yet production ready.

[shaitams]

Thanks