The installation process runs the hosteval program and checks the results to verify if the OS is supported or not.
To verify the version of the kernel run the command "uname -a". Below is the kernel which has this issue.
"Linux Spectrum 4.1.12-61.1.25.el7uek.x86_64 #1 SMP Wed Oct 19 11:24:13 EDT 2016 x86_64 x86_64 x86_64 GNU/Linux "
Also verify the RedHat release by " cat/etc/redhat-release" output looks like below:
"Red Hat Enterprise Linux Server release 7.3 (Maipo) "
If the kernel is not supported see above example you will get this error message :
"Error: SPECTRUM does not support this version of Redhat Enterprise Linux. Please see the SPECTRUM Installation Guide for supported versions."