Nginx or Tengine日志格式化

在Nginx主配置文件中重新定义日志输出格式：

log_format main '$host $server_addr $remote_addr "$time_local" "$request_method" "$uri" "$args" ' '$status $body_bytes_sent "$http_referer" ' '"$http_user_agent" "$http_x_forwarded_for" $request_time';

则输出日志如下：

192.168.1.106 192.168.1.106 101.246.116.62 "09/Mar/2017:15:18:58 +0800" "GET" "/xxxx/data/xxx/hls/20xx05/8cd7xxxxx07/FHD/seg-0028.ts" "-" 200 853896 "-" "AppleCoreMedia/1.0.0.9A405 (iPad; U; CPU OS 5_0_1 like Mac OS X; zh_cn)" "-" 0.314