ON CLUSTER clause allows creating settings profiles on a cluster, see Distributed DDL.
Example
Create a user:max_memory_usage_profile settings profile with value and constraints for the max_memory_usage setting and assign it to user robin:
Documentation for Settings Profile
ON CLUSTER clause allows creating settings profiles on a cluster, see Distributed DDL.
max_memory_usage_profile settings profile with value and constraints for the max_memory_usage setting and assign it to user robin: