Nginx 反向代理的正确配置

server { 
listen 80; 
server_name 127.0.0.1;

#charset koi8-r;

#access_log logs/host.access.log main;

location /{ 
proxy_pass http://paila; 
proxy_redirect off ; 
proxy_set_header Host $host; 
proxy_set_header X-Real-IP $remote_addr; 
proxy_set_header REMOTE-HOST $remote_addr; 
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; 
client_max_body_size 50m; 
client_body_buffer_size 256k; 
proxy_connect_timeout 1; 
proxy_send_timeout 30; 
proxy_read_timeout 60; 
proxy_buffer_size 256k; 
proxy_buffers 4 256k; 
proxy_busy_buffers_size 256k; 
proxy_temp_file_write_size 256k; 
proxy_next_upstream error timeout invalid_header http_500 http_503 http_404; 
proxy_max_temp_file_size 128m; 
}