[Bug 265317] sysutils/ipdbtools: add periodic weekly script for updating db

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=265317

--- Comment #4 from Nick Hibma <nick@van-laarhoven.org> ---
Thank you for your thoughtful comments!

wrt 1) You could randomize the pick if no arguments are given:

  MIRROR=$( (echo "ftp.lacnic.net"; echo "ftp.ripe.net" ) | sort -R | tail -1 )


wrt 2) sure, but that is more a case of replacing the target file only if the
download succeeded.


wrt 3) certbot required the use of a cronjob as well, which was cumbersome and
error prone; now this thing is included in the weekly mails it is trivial to
set up, get right and get the result in the weekly mails.

Case in point on crontabs: Did you know that '%' is a special char in crontabs?
I didn't...


wrt 4) There is some mitigation in the weekly scripts for that:

/etc/defaults/periodic.conf:

  # Max time to sleep to avoid causing congestion on download servers
  anticongestion_sleeptime=3600

In certbot weekly script (also in my weekly script as it is a copy of that
script) a call to the 'anticongestion' function.

And: people copy&paste your crontab entry, so you get the same problem.

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