nginx upstream timed out (110: Connection timed out) while reading response header from upstream

NGINX反代理超时报错，解决方法： 加入proxy_read_timeout 300;

location / {
               proxy_pass http://127.0.0.1:8080;
               proxy_read_timeout 300;
               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 ^~ /api/ {
               proxy_pass http://127.0.0.1:8081;
               proxy_read_timeout 300;
               proxy_set_header Host $host;
               proxy_set_header X-Real-IP $remote_addr;
               proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      }