Hey @Mukesh, 
Thanks for the follow-up and for sharing your Kubernetes setup details.
Everything related to Kubernetes deployment, high availability, clustering, and secure ingress configuration falls under enterprise-level topics (scalability, fault tolerance, etc.).
For such questions, it’s best to contact our official support or sales team directly. They can provide detailed guidance tailored to your infrastructure and licensing model.
You can reach them here:
sales@onlyoffice.com
In the Community edition we mainly focus on simpler single-instance setups. For 20 connections, Kubernetes and complex HA configurations are usually overkill, which is why we recommend reaching out to the sales/support team for enterprise-grade advice.