We noticed that the nginx logfile is not being rotated on some freshly setup Centos 6.2 servers, which should have been triggered by logrotate running from cron. The used cron implementation is cronie together with anacron.


I first suspected the setup being broken due permissions issues with cronie, which requires special permissions as found in the CAVEATS section of cron(8):

The crontab files have to be regular files or symlinks to regular files,
they must not be executable  or  writable  by anyone  else than the owner.
This requirement can be overridden by using the -p option on the crond command line.

We had this bug before, but this time it is different:

  • The Logrotate cronjob is located at /etc/cron.daily/logrotate
  • The cron.{daily, weekly, monthly} jobs are defined in /etc/anacrontab
  • The anacron command interprets jobs in /etc/anacrontab
  • Anacron is called from /etc/cron.hourly/0anacron
  • /etc/cron.d/0hourly contains 01 * * * * root run-parts /etc/cron.hourly


In our situation /etc/cron.d/0hourly was missing, because we removed all files from /etc/cron.d/ and put only our own files in there. The simple fix is to ensure the contents of this directory are not removed anymore and to reinstall the cronie package to recreate the /etc/cron.d/0hourly file.