编辑conf 下的nginx.conf 文件 ,将如下代码放入http层

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

    #按日期
    map $time_iso8601 $logdate {
    '~^(?<ymd>\d{4}-\d{2}-\d{2})' $ymd;
    default 'date-not-found';
    }

    access_log logs/access-$logdate.log main;