// Module included in the following assemblies:
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[id='proc-scaling-up-a-kafka-cluster-{context}']

= Scaling up a Kafka cluster

This procedure describes how to increase the number of brokers in a Kafka cluster.

.Prerequisites

* An existing Kafka cluster.
* A _reassignment JSON file_ named `_reassignment.json_` that describes how partitions should be reassigned to brokers in the enlarged cluster.

.Procedure

. Add as many new brokers as you need by increasing the `Kafka.spec.kafka.replicas` configuration option.

. Verify that the new broker pods have started.

include::snip-reassign-partitions.adoc[]

.Additional resources
