Aiven Kafka Setup (avn CLI)

End-to-end workflow for creating an Apache Kafka service on Aiven using the avn CLI, with SASL_SSL authentication, Avro Schema Registry, and a working Java or Python producer/consumer example that reads from CSV and writes to Kafka.

IMPORTANT: This skill ALWAYS creates a fully working example (Java by default). Steps 1–3 are all mandatory. Never stop after creating the service — you MUST also build the example project, generate test data, and run the producer + consumer end-to-end.

Step 1: Prerequisites

1.1 Verify avn CLI login

Run the following to check if the user is logged in: