worker_processes  1;events {    worker_connections  1024;}http {    include       mime.types;    default_type  application/octet-stream;    sendfile        on;    keepalive_timeout  65;    upstream noticeapp{        server 127.0.0.1:9002;        server 127.0.0.1:9003;    }    server {        listen       9001;        server_name  localhost;        location / {            proxy_pass http://noticeapp;            proxy_set_header Host $host;            proxy_set_header X-Real-IP $remote_addr;            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;        }        location ~ .* {            proxy_pass http://noticeapp;            proxy_set_header Host $http_host;            proxy_set_header X-Real-IP $remote_addr;            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;        }    }}