nginx日志按日期存储

http {
    include       mime.types;
    default_type  application/octet-stream;
    map $time_iso8601 $logdate {
        '~^(?<ymd>/d{4}-/d{2}-/d{2})' $ymd;
        default    'date-not-found';
    }
    access_log logs/access-$logdate.log;