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Kannika

    Requirements

    Kannika Armory has the following requirements:

    • A Kubernetes cluster (1.24+)

    System Requirements

    Compatible systems

    Kannika Armory is available for systems running on amd64 and arm64 architectures.

    Hardware requirements

    Kannika Armory is predictable in its resource usage. Here are a few guidelines to help you select suitable hardware.

    Backup

    The Backup requirements scale with the size of your topics and partitions. It roughly needs:

    • 10 MB of RAM per partition
    • 1 CPU thread per topic

    The CPU requirement can vary depending on the throughput of your topics. Kannika Armory should perform just fine with 1 CPU thread per topic producing around 1 MiB/s of data.

    A Backup that handles 4 topics with 10 partitions each, with a throughput of around 1MiB/s, the theoretical requirements would be 400 MiB of RAM and 4 CPU threads.

    You will need additional computing power if you use compression. See the section about compression. The precise amount will depend on the chosen algorithm and the selected quality setting.

    Regarding I/O, expect 128 disk write requests for every MiB received from Kafka, as Kannika Armory works with 8 KiB buffers by default. So, for a 1MiB/s stream, 128 iops. Additionally, using a compression algorithm may reduce the number of disk write accesses by up to 95%.

    Restore

    The Restore requirements are less critical than the Backup’s. The general idea is that the more resources you allocate, the faster the Restore.

    It would be best if you planned for at least the following:

    • 512 MB of RAM
    • 2 CPU threads

    As a rule of thumb, add 256MiB of RAM for every additional thread.