How to add a domain name to access the DE server ?

I have an nginx proxy server and a onlyoffice de server ,
How to access the onlyoffice de server through a proxy.
What should I do?

OS:CentOS stream 9
Developer Edition:8.1.3-4.el7

Hello,
Here are nginx proxy settings that you can use for running Document Server behind proxy: document-server-proxy/nginx/minimal.conf at master · ONLYOFFICE/document-server-proxy · GitHub

Nginx works on server A, de server works on server B,
An error has occurred

This is nginx conf file

Hello @xuxiaofei

Do I understand correctly that you are trying to access integrated test example through the proxy? Or this is an attempt to load the editor from your app that is located behind the proxy?

By the way, if you have active or trial license for Document Server Developer Edition, you can contact us via Helpdesk to get prompt replies.