Red Hat Update Infrastructure systemd/Timers

Systemd timers are systemd unit files that end in .timer that control .service files or events. Several repetitive tasks are automatically scheduled and run in Red Hat Update Infrastructure, on the RHUA node in particular.

Table 1. Systemd Timers
Timer file Purpose Frequency Log file

rhui-export-repos-trigger.timer

export synchronized content

every 5 minutes; randomized

/var/log/rhui/rhui-export-repos.log

rhui-orphans-cleanup.timer

delete orphaned content

weekly, on 4am every Wednesday

/root/.rhui/rhui.log

rhui-pulp-tmpfiles-cleanup.timer

delete temporary files left behind by Pulp

weekly, on 3am every Tuesday

/root/.rhui/rhui.log

rhui-purge-upload-dirs.timer

clean up temporary directories from uploads to custom repositories

every 5 minutes; randomized

/var/log/rhui/rhui-purge-upload-dirs.log

rhui-repo-sync-timer

synchronize repositories, if they are due

every 5 minutes; randomized

(none; see the systemd journal instead)

rhui-symlinks-cleanup-deepscan.timer

delete all broken symlinks to deleted artifacts

yearly, at 4am on the Tuesday in January that is between the 16th and the 22nd

/root/.rhui/rhui.log

rhui-synchronize-subscriptions.timer

check for changes to the entitlement certificate, and import a new one if needed

hourly; randomized

/var/log/rhui/rhui-subscription-sync.log

rhui-update-mappings.timer

update the information about available minor versions

every six hours; randomized

/var/log/rhui/rhui-update-mappings.log

Parameters for systemd timers
Copy link

  • Timer files are stored in /usr/lib/systemd/system in the RHUA container.
  • All the log file paths are in the RHUA container. Note that /var/log/rhui is also available on the RHUA host as /var/lib/rhui/log, and /root/.rhui is available as /var/lib/rhui/root/.rhui
  • Timers are randomized when the RHUA container starts or is restarted.
  • To view all the Red Hat Update Infrastructure timers, run the following command in the RHUA container: 
    systemctl list-timers --all rhui\*

In addition to the above-mentioned timers, which exist in the RHUA container, the following timers are installed on the host systems where the RHUA, CDS, and HAProxy containers run.

Table 2. Additional timers on Red Hat Update Infrastructure hosts
Timer file Purpose Frequency Log file

rhui-container-image-prune.timer

remove old versions of Red Hat Update Infrastructure container images

weekly, at 4am every Sunday

/var/log/messages