Key DB One Master and two read only replica

What would be the ideal configuration to have one Master and two read-only replicas? One of the reasons we are planning to have only one master node is to avoid data consistency issues.

I tried with this configuration, but replication to read-only nodes does not seem to work.
–active-replica yes \
–replica-read-only yes \
–multi-master no

What do you mean it “does not seem to work.” exactly?

What was your motivation for setting read-only replicas to be also active replicas?