When trying to install a yum package, I'm getting:
Non-fatal POSTIN scriptlet failure in rpm package
But the yum install is completing successfully, so it's tough to know when it failed or not.
Anyway to fail when yum encounters this?
You must update your selinux-policy package. Check RPM scriptlets
fail during updates
Just ensure you have the right kernel-headers installed for your running kernel and you should be fine. According to trouble installing on Fedora and CentOS
And finally, check this bug: Fedora 25 Install from DVD ISO Fails DNF error: Non-fatal POSTIN scriptlet failure