I have deployed Flink in EKS Cluster for this i need some suggestions, in addition Kafka, PostgreSQL is used in our project. 1. Is it good to have the Flink, Kafka and PostgreSQL in a single cluster as different nodes or 2. For Flink, Kafka, PostgreSQL,...separate cluster is good?? Kindly suggest the K8s Cluster architecture for me..

By separate cluster, you mean separate EKS cluster? Are you self hosting Kafka and Postgres?