upstream test_server { server 192.168.184.20:9001 weight=2 fail_timeout=10s max_fails=3; } server { listen 80; server_name receive_body.kutian.edu; location /receive/ { proxy_pass http://test_server; client_max_body_size 250k; #client_body_buffer_size 100k; client_body_temp_path test_body_path; client_body_in_file_only on; #client_body_in_single_buffer on; #proxy_request_buffering on; #clent_body_timeout 30; } }