How to Delete All Kafka Topics at Once Using kafka-topics.sh on macOS

I'm trying to delete all Kafka topics at once using the kafka-topics.sh command-line tool on my Mac. I understand that the --delete flag is used for this purpose, but I'm unsure about the correct syntax and usage, particularly when using a regular expression pattern to match all topics.

Environment Details:

• Kafka version: 2.12-3.5.0
• ZooKeeper server: Running at localhost:2181
• Kafka server: Running at localhost:9092
• Operating System: macOS

What I've Tried:

• Basic Command to Delete a Single Topic:

kafka-topics.sh --delete --zookeeper localhost:2181 --topic

• Attempting to Use a Regular Expression to Delete All Topics

kafka-topics.sh --delete --zookeeper localhost:2181 --topic '.*'

However, this command did not work as expected.

Questions:

1. What is the correct syntax to delete all Kafka topics at once using the kafka-topics.sh command-line tool with a regular expression pattern?
2. Are there any precautions or considerations I should be aware of when deleting all topics in Kafka?

If any more information is needed or if there are additional considerations, please let me know. Thank you!

Simply use this command. It will delete all topics in your Kafka cluster:

./bin/kafka-topics.sh --bootstrap-server localhost:9092 --delete --topic '.*'