Our SAP PO 7.5 system is running on RHEL 7.8 Operating system. We are planning to upgrade the OS to latest RHEL version(8.6). As far as I understand we cannot do a in-place upgrade from 7.8 to 8.x version by keeping the installed applications and utilities. So the suggestion I received from infra team is to setup a completely new PO system on RHEL 8.x and migrate everything from current PO system to new system. But this would be a costly method and also requires manhours to migrate everything from old system to new system.
Please suggest if there is a better way to move to RHEL 8 by keeping the current system.