How much space does a scylla pod would require to deploy scylla db in k8s?

ScyllaDB
,
1

I am trying to deploy scyllaDB as a k8s service. Currently, trying to create a cluster with 3 pods. As of now, I attached 15GB storage to each of the pod - total of 45 GB to scylla cluster.
but I am still getting below error:

root@scylla-2:/etc/scylla# scylla
FATAL: Exception during startup, aborting: std::runtime_error (Could not setup Async I/O: Resource temporarily unavailable. The required nr_event (1) exceeds the limit of request capacity in /proc/sys/fs/aio-max-nr (65536). Try increasing that number or reducing the amount of logical CPUs available for your application)

Any idea about optimum and minimum volume to be mounted to each pod?

2

This error is not about amount of storage required, but number of maximum aio operations, which is a kernel property.
As message suggests, you should increase /proc/sys/fs/aio-max-nr on the k8s Node.
Or use Scylla Operator where this value can be set as part of ScyllaCluster.spec.sysctls.
Setting it to 30000000 should be enough.

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