nginx 署理 502 Bad Gateway 处理办法

nginx 代理 502 Bad Gateway 处理办法

??? server {
??????? listen? 80;
??????? server_name? xxx.com;
???? ? ?? ? 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 30;
???????????? 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;
????? location / {
??????????? proxy_pass http://ip;
??????? }

??? }