On 2020-02-18, Martin Gregorie wrote:

> On Sun, 16 Feb 2020 15:16:09 +0000, Roger Bell_West wrote:
>
>> On 2020-02-16, Adam Funk wrote:
>>>I want the cron.daiy jobs to run earlier in the morning than they do by
>>>default.  I used to do this by editing the time in /etc/cron.d/anacron,
>>>but that no longer works; nor does changing the time in the cron.daily
>>>line of /etc/crontab.  How is this controlled now?
>>
>> Welcome to the systemd snake pit. There will be an undocumented command
>> somewhere to change it, but why would you want to override systemd's
>> defaults, which are perfect for every computer and every usage pattern?
>
> Look at "man 8 cron" to see how crond is run, including under systemd.
> These days crond only handles the jobs that run more frequently than
> daily as well as those with their own run schedule, i.e those the run
> several times a day or to a more complex run schedule. It also has useful
> references to other manpages.
>
> For jobs that run daily, weekly or monthly, see at "man 8 anacron" for
> details of the controlling daemon, anacron, and "man anacrontab" to see
> how to configure anacron, including changing the time of day these jobs
> will be run at.

I can't find anything there on how to change the start time each day;
man 8 anacron does say this:

  DEBIAN-SPECIFIC CONFIGURATION
  On Debian-based systems, anacron will be activated hourly every day
  from 07:30 local time to 23:30 local time through cron job (on
  non-systemd systems where cron is installed and enabled) or systemd
  timer (on systemd-based systems).  On activation, anacron will check
  if it missed some jobs. If yes, it will start those jobs after a
  short period of time.

But I don't see how to change the 07:30 start.  I made the following
change in /etc/cron.d/anacron yesterday

#30 7-23 * * *   root [ -x /etc/init.d/anacron ] && if [ ! -d
/run/systemd/system ]; then /usr/sbin/invoke-rc.d anacron start >/dev/null; fi
30 5-23 * * *   root [ -x /etc/init.d/anacron ] && if [ ! -d
/run/systemd/system ]; then /usr/sbin/invoke-rc.d anacron start >/dev/null; fi

but it still ran at 07:30.


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