system_auth table RF is not extended during scale out?

[mykaul]

When you add more nodes to a Scylla cluster, I'm not sure the operator expand the RF for system_auth table, as the docs ask to do.
(I'm pretty sure I've already opened a bug about it, but couldn't find it)

[tnozicka]

Thanks for reporting it, I don't recall an older one.

Is there any chance that ScyllaDB would just do it automatically in the near term future? It seems like a strange requirements for administrators if it should be set at any time to the current number of nodes in a DC while ScyllaDB could just set the value when it scales automatically.

[tnozicka]

If authenticator is set to PasswordAuthenticator - increase the replication factor of the system_auth keyspace.

For example:

ALTER KEYSPACE system_auth WITH REPLICATION = {'class' : 'NetworkTopologyStrategy', 'dc1' : <new_replication_factor>};

It is recommended to set system_auth replication factor to the number of nodes in each DC.

https://opensource.docs.scylladb.com/stable/operating-scylla/procedures/cluster-management/add-node-to-cluster.html

[mykaul]

At the very least we might want to add it to our operator documentation