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Kafka Topics
List existing topics
bin/kafka-topics.sh –zookeeper localhost:2181 –list

Purge a topic
bin/kafka-topics.sh –zookeeper localhost:2181 –alter –topic mytopic –config retention.ms=1000

… wait a minute …

bin/kafka-topics.sh –zookeeper localhost:2181 –alter –topic mytopic –delete-config retention.ms

Delete a topic
bin/kafka-topics.sh –zookeeper localhost:2181 –delete –topic mytopic

Get the earliest offset still in a topic
bin/kafka-run-class.sh kafka.tools.GetOffsetShell –broker-list localhost:9092 –topic mytopic –time -2

Get the latest offset still in a topic
bin/kafka-run-class.sh kafka.tools.GetOffsetShell –broker-list localhost:9092 –topic mytopic –time -1

Consume messages with the console consumer
bin/kafka-console-consumer.sh –new-consumer –bootstrap-server localhost:9092 –topic mytopic –from-beginning

Get the consumer offsets for a topic
bin/kafka-consumer-offset-checker.sh –zookeeper=localhost:2181 –topic=mytopic –group=my_consumer_group

Read from __consumer_offsets
Add the following property to config/consumer.properties: exclude.internal.topics=false

bin/kafka-console-consumer.sh –consumer.config config/consumer.properties –from-beginning –topic __consumer_offsets –zookeeper localhost:2181 –formatter “kafka.coordinator.GroupMetadataManager\$OffsetsMessageFormatter”

Kafka Consumer Groups
List the consumer groups known to Kafka
bin/kafka-consumer-groups.sh –zookeeper localhost:2181 –list (old api)

bin/kafka-consumer-groups.sh –new-consumer –bootstrap-server localhost:9092 –list (new api)

View the details of a consumer group
bin/kafka-consumer-groups.sh –zookeeper localhost:2181 –describe –group

kafkacat
Getting the last five message of a topic
kafkacat -C -b localhost:9092 -t mytopic -p 0 -o -5 -e

Zookeeper
Starting the Zookeeper Shell
bin/zookeeper-shell.sh localhost:2181

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