How to migrate existing data from non-operator Kafka cluster in k8s to a new Strimzi operated Kafka cluster

[milon619]

I have a Kafka cluster running in k8s and it's deployed as a statefulset. Its not managed by any operator. I want to migrate its data (topics, partitions, messages, etc) to a new Kafka cluster that I am going to deploy using the Strimzi Kafka operator. Any idea on how to perform this is highly appreciated.

[scholzj]

I guess you have several options. For example:

• Deploy a new cluster and use Mirror Maker to mirror the data
• Try to either re-use the existing volumes / or use the data from them for them and copy them to the right path for Strimzi

It is always a bit individual ... depends on your environment, what do you use today, how big outage can you afford etc.

[milon619]

Okay, I am going to try mirror-maker. Thanks for your input 👍