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Last updated: Sep 24, 2026 16:31 UTC

Upgrade Standalone Kafka

This topic provides steps to start a standalone Kafka cluster in ZooKeeper mode, validate its functionality, and perform a rolling upgrade from Kafka 2.8.2.3.3.6.x-x to Kafka 3.7.2.3.3.6.x-x.

Starting Kafka(2.8.2.3.3.6.x-x) in ZooKeeper Mode

For details about the ODP Standalone Binaries, see Accessing Acceldata Repositories.

  • Start the ZooKeeper Service using the following command.
bin/zookeeper-server-start.sh config/zookeeper.properties
  • Start the Kafka Broker Service. Open another terminal session and run the following command.
bin/kafka-server-start.sh config/server.properties

Once all the services are successfully launched, you have a basic Kafka environment ready for use.

Pre-upgrade Validation

Before proceeding with the upgrade, validate the Kafka setup by performing the following steps:

  • List Topics 
bin/kafka-topics.sh --list --bootstrap-server localhost:9092

Example output:

__consumer_offsets
quickstart-events
  • Create a Same Topic 
bin/kafka-topics.sh --create --topic Test1 --bootstrap-server localhost:9092

Example output:

Created topic Test1
  • Write Events into the Topic 
bin/kafka-console-producer.sh --topic Test1 --bootstrap-server localhost:9092

Input:

>This is my first event
>This is my second event

Terminate with CTRL+C.

  • Read Events from the Topic 
bin/kafka-console-consumer.sh --topic Test1 --from-beginning --bootstrap-server localhost:9092

Example output:

This is my first event
This is my second event

Upgrade Options

For details about upgrading Kafka 2 to Kafka 3, see the following pages.