Rudder

Sometimes, we need to add different package repos according to the OS we're on. One way of doing this in Rudder is to use groups, but this is not always practical. Repos are the classic example of when you know what you need on each OS, but don't really need a gruop to separate that out...

In the Technique, there is a multi-valued section to add repositories:

      <SECTION name="Repository" multivalued="true" component="true" componentKey="ZYPPER_NAME">

I suggest adding in here a variable "Only add this repository to if the OS is: " with a list of options SLES / SLES 10 / SLES 10 SP1 / SLES 10 SP2 / SLES 10 SP3 / SLES 10 SP4 / SLES 11 / SLES 11 SP1 / SLES 11 SP2 / RHEL / RHEL 5 / RHEL 6. The value of each options would be the corresponding CFEngine class, and we'd add to the promises something like "ifvarclass => ${os_to_apply_to}".