server{
listen 80;
server_name a.com;
location /
{
proxy_next_upstream http_502 http_504 error timeout invalid_header;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_pass http://192.168.100.100:9090;
expires 1d;
rewrite ^/(.*)$ http://b.com/gallary permanent;
}
charset utf-8;
}