On RHEL 9, the traditional System V init system is replaced by systemd init system, hence folder /etc/init.d does not exist on RHEL 9.
The Symantec Directory installer complained about missing /etc/init.d/dxserver file.
On the Symantec Directory support matrix, RHEL 9 is listed as supported.
Is there a plan for the installer to create a dxserver systemd service unit to auto start the DSAs?
Symantec Directory 14.1 SP6
In the Consideration section of Platform Support Matrix doc, it says
You must install initscripts (for RHEL 9) or init-scripts (for Rocky Linux 9) before installing Directory or Directory Manager. If you do not install the appropriate scripts before installing Directory or Directory Manager, you must manually restart these services after rebooting the host machine.
So do install initscripts firstly
#sudo dnf install initscripts
And then install Symantec Directory.