Requirements

The Kafka Plugin has the following requirements:

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Requirement	Version/Comment
Mirantis OpenStack	9.x
Disk space	Provide at least 50 GB of disk space. The disk space depends on the environment size, replication settings, and data retention.
Hardware requirements	The hardware configuration (RAM, CPU, disk(s)) required by this plugin depends on the size of your cloud environment and other factors like the replication factor and retention policy for Kafka queues. The JVM Heap size is configurable through the plugin UI. Provide at least 8 GB for the JVM heap size of Kafka. For an intensive workload, you should provide 16GB of RAM for the JVM heap size of Kafka and 5 GB of RAM for the JVM heap size of Zookeeper. An average setup would require a quad-core server with at least 8 GB of RAM for Kafka and 3GB for Zookeeper and access to a 500+ IOPS disk.
OpenStack nodes	The plugin implements the Kafka Fuel role. The maximum number of nodes for the Kafka Fuel role is five. To support high-availability, the minimum number of nodes is three. You need to have an initial odd number of nodes to comply with the leader election process constraints.