参考地址：http://www.ttlsa.com/nginx/nginx-modules-ngx_http_log_request_speed/
查看nginx 安装模块和配置
/usr/local/nginx/sbin/nginx -V
修改nginx.conf(再http{}里面)
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for" "$request_time"';
#如果不加这个的话 是无效的
access_log logs/access.log main;
检查nginx.conf配置文件是否正确
/usr/local/nginx/sbin/nginx -t
启动nginx
/usr/local/nginx/sbin/nginx -s reload
查看
tail -f /usr/local/nginx/logs/access.log 时间在最后
