nginx访问日志在哪里

log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '

                     '$status $body_bytes_sent "$http_referer" '

                     '"$http_user_agent" "$http_x_forwarded_for"'

                      '$upstream_addr $upstream_response_time $request_time ';

   access_log  logs/access.log  main;