RHDS - "Failed to start dirsrv@<INSTANCE>.service: Unit is masked".
Issue
An attempt to start the RHDS instance fails with the following error message:
# systemctl start dirsrv@test
Failed to start dirsrv@test.service: Unit is masked.
#
Environment
Red Hat Directory Server 10
Red Hat Enterprise Linux 7.x
Red Hat Directory Server 11
Red Hat Enterprise Linux 8.x
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