Include date in nginx log file name

Question

I am running nginx 1.15.6 and I am trying to include the current date in the nginx log file name.

Some thing like this: access_log /var/log/nginx/access.2018.11.07.log

Answer 1

This is what I ended up using and it works perfectly:

map $time_iso8601 $year {
    default '0000';
    "~^(\d{4})-(\d{2})-(\d{2})" $1;
}
map $time_iso8601 $month {
    default '00';
    "~^(\d{4})-(\d{2})-(\d{2})" $2;
}
map $time_iso8601 $day {
    default '00';
    "~^(\d{4})-(\d{2})-(\d{2})" $3;
}

access_log  /var/log/nginx/access.$year-$month-$day.log  apm_json;