Hi!
I have installed IRIS 2024.1 in RHEL 9.5, using the following 

sudo ISC_PACKAGE_INSTANCENAME="IRISTEST01" ISC_PACKAGE_INSTALLDIR="/iris" \
ISC_PACKAGE_UNICODE="N"  ISC_PACKAGE_INITIAL_SECURITY="Normal" \
ISC_PACKAGE_INSTALL_INTEGRATEDML="N" ISC_PACKAGE_MGRUSER="irisowner" \
ISC_PACKAGE_MGRGROUP="irismgr" ISC_PACKAGE_USER_PASSWORD="**************"  \
ISC_PACKAGE_IRISUSER="irisusr" ISC_PACKAGE_IRISGROUP="irisgrp" \
ISC_PACKAGE_CSPSYSTEM_PASSWORD="**************" ISC_PACKAGE_WEB_CONFIGURE="Y" \
ISC_PACKAGE_WEB_SERVERTYPE="Apache" ISC_PACKAGE_WEB_APACHE_VERSION="2.4" \