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MaCrek_56686's avatar
MaCrek_56686
Icon for Altocumulus rankAltocumulus
Jun 17, 2016

cron.daily is configured by /etc/anacrontab:

[root@f5-1:Active:In Sync] config  cat /etc/anacrontab
 /etc/anacrontab: configuration file for anacron

 See anacron(8) and anacrontab(5) for details.

SHELL=/bin/sh
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root
 the maximal random delay added to the base delay of the jobs
RANDOM_DELAY=45
 the jobs will be started during the following hours only
START_HOURS_RANGE=3-22

period in days   delay in minutes   job-identifier   command
1       5       cron.daily              nice run-parts /etc/cron.daily
7       25      cron.weekly             nice run-parts /etc/cron.weekly
@monthly 45     cron.monthly            nice run-parts /etc/cron.monthly

There are interesting options like "START_HOURS_RANGE" or "RANDOM_DELAY". But my cron is not customized, so I suppose, that this is general behavior. Maybe someone else have noticed same behavior.

  • tatmotiv's avatar
    tatmotiv
    Icon for Cirrostratus rankCirrostratus
    Jun 17, 2016
    That's what I was looking for, too, but for some reason I cannot find /etc/anacrontab on my systems (vcmp guests running 11.6.0 HF6)... [root@mylb:/S1-green-P:Active:In Sync] config cat /etc/anacrontab cat: /etc/anacrontab: No such file or directory What version / systems are you running?
  • MaCrek_56686's avatar
    MaCrek_56686
    Icon for Altocumulus rankAltocumulus
    Jun 17, 2016
    Output in my previous post is from 12.0.0 HF1. But you are right, on the other box: 11.6.0 HF5, is no /etc/anacron file.
  • tatmotiv's avatar
    tatmotiv
    Icon for Cirrostratus rankCirrostratus
    Jun 17, 2016
    Interesting. The 12.0 release notes list only one changed behaviour that contains cron: "482950 Phone Home scheduled jobs are now scheduled based on installed time, rather than at default daily/monthly intervals found in cron.daily and cron.monthly."