nginx日志按照日期切割

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

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


access_log logs/access-$logdate.log main;
open_log_file_cache max=10;

if ($time_iso8601 ~ "^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2})") {
    set $year $1;
    set $month $2;
    set $day $3;
    set $hour $4;
    set $minutes $5;
    set $seconds $6;
}