Apache Kafka


Kafka is a distributed stream processing system. It forms the central component of Monasca and in an OpenStack context can also be used as an experimental messaging backend in Oslo messaging.


A spinning disk array is normally sufficient for Kafka. The data directory defaults to a docker volume, kafka. Since it can use a lot of disk space, you may wish to store the data on a dedicated device. This can be achieved by setting kafka_datadir_volume in /etc/kolla/globals.yml:

kafka_datadir_volume: /mnt/spinning_array/kafka/