解决宝塔Nginx使用CDN后无法获取用户真实IP （含LNMP）

log_format  main  '"$http_x_forwarded_for"-$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';