• Systemd provides unit.timer files that go together with unit.service files to schedule the service file

  • When using systemd timers, the timer should be enabled / started, and NOT the service unit

  • systemd timers are often installed from RPM packages

  • In the timer unit file, the OnCalendar option specifies when the service should be started

  • On RHEL 9, systemd timers are the default way for scheduling recurring services