Produce messages from stdin

Produce key:value messages interactively

kafka-console-producer.sh --bootstrap-server kafka:9092 --topic my-topic --property 'key.separator=:' --property 'parse.key=true'

More kafka commands

Consume from beginning

kafka-console-consumer.sh --bootstrap-server kafka:9092 --topic my-topic --from-beginning --max-messages 10

Read first 10 messages from a topic
Alter topic partitions

kafka-topics.sh --bootstrap-server kafka:9092 --alter --topic my-topic --partitions 12

Increase partition count (cannot decrease)
Describe topic config

kafka-configs.sh --bootstrap-server kafka:9092 --describe --entity-type topics --entity-name my-topic

Show all overridden config values for a topic
Set topic retention

kafka-configs.sh --bootstrap-server kafka:9092 --alter --entity-type topics --entity-name my-topic --add-config retention.ms=604800000

Set 7-day retention on a topic
Check broker metadata

kafka-broker-api-versions.sh --bootstrap-server kafka:9092

List all API versions supported by the broker