Instant prereq for SCOM 2012 R2 on Windows 2012 R2

If you really don't want to figure out all the individual roles and features, run :

import-module servermanager
add-windowsfeature Web-Server,NET-Framework-45-ASPNET
add-windowsfeature Web-Asp-Net,Web-Asp-Net45,Web-Metabase,Web-Windows-Auth,Web-Request-Monitor,Web-Mgmt-Console,NET-WCF-HTTP-Activation45

This will install all the necessary roles for SCOM 2012 R2. If you get CGI/ASP handlers not being registered, restart the server.