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Re: Creating a randomized cron entry

* Christoph Berg:

> Re: Florian Weimer in <87acf223bk.fsf@mid.deneb.enyo.de>
>> I'd like to create a cron entry which is run once a day, at some
>> random time.  This is necessary because the cron entry will result in
>> a request over the network, and I want to avoid that all hosts in a
>> time zone pound the server at the same time.
> I guess it is ok if you create a fixed entry for a machine, and the
> different entries on different machines will then do the load
> balancing. Just pick two random numbers and put them in /etc/cron.d/.

Hmm, should the postrm script delete it during purge?  It's not a
conffile, and I don't like changing files under /etc automatically.

> Keep in mind that Debian users usually expect that daily cronjobs will
> still be run if the machine is down at night and anacron is installed.
> You might want to add an additional @reboot job.

It's a bit more complicated than that because the program needs
network access, which might not be available at that point.  I
probably need to put something under /etc/ppp/ip-up.d, too, and write
a small script which makes sure that the whole thing is only run once
per day.

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