Hi Bogdan Irimie, Facter 4.0.19 is broken on redhat and centos. Can we get a release of facter with this fix? Could you update this ticket with release notes and fix version too?
The issue was caused by the new OS hierarchy loading mechanism. Before the new hierarchy mechanism RedHat 5 was considered El, but in the new OS hierarchy, it is considered Rhel.
The fix introduces Rhel as a new OS that is a descendant of El.