Describe topic

Show partition count, replication, leaders and ISR

kafka-topics.sh --bootstrap-server kafka:9092 --describe --topic <name>

More kafka commands

Delete topic

kafka-topics.sh --bootstrap-server kafka:9092 --delete --topic <name>

Permanently delete a Kafka topic
Consume from beginning

kafka-console-consumer.sh --bootstrap-server kafka:9092 --topic <name> --from-beginning

Read all messages from a topic starting from offset 0
Produce messages

kafka-console-producer.sh --bootstrap-server kafka:9092 --topic <name>

Send messages to a topic interactively from stdin
List consumer groups

kafka-consumer-groups.sh --bootstrap-server kafka:9092 --list

Show all consumer groups
Consumer group lag

kafka-consumer-groups.sh --bootstrap-server kafka:9092 --describe --group <group>

Show lag per partition for a consumer group