How to reload (not restart) CUPS in RHEL 6, 7, and 8

Solution Verified - Updated -

Issue

  • We would like to reload CUPS using something like "service cups reload". This option appears to be missing from the systemd scripts and I can only see a restart option.
  • How can we get CUPS to reload it's configuration files without restarting it?
  • What will sending a HUP signal to CUPS do?

Environment

  • Red Hat Enterprise Linux (RHEL) 6, 7, and 8
  • Common Unix Printing System (CUPS) 1.4.2, 1.6.3, 2.2.6

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