Etherpad behind nginx served at /etherpad

default.conf

server {
...
...
...

# ETHERPAD|Reverse Proxy [/etherpad]
  location /etherpad/ {
    rewrite                /pad/(.*) /$1 break;
    rewrite                ^/pad$ /pad/ permanent;
    proxy_pass             http://localhost:9001/;
    proxy_pass_header Server;
    proxy_redirect         /etherpad/ /etherpad/pad/;
    proxy_set_header       Host $host;
    proxy_buffering off;
    }


}