what is the recommended approach to adding clickhouse servers to an existing cluster? i want to go from 2 to 4. this cluster is not external, it is managed by k8s. I have tried incrementing replicasCount and running helm upgrade but no luck, the migrator-sync just gets stuck pending and i am not sure where to go from here. there is no data involved either as this is a fresh install but I need to know how to do this.

Can you share the logs of schema migrator

there are no logs as the pod doesn't initialize