Am not sure you should be trying to install Splunk on an OC cluster. On docker container maybe but not in an OC cluster. This OC is built is optimized for developers coding new applications. So that the application code and its base depencies are attached during the oc new-app command execution. Using tools like S2I this makes the developers work easier. But when it comes to an already running solution like Splunk what is the advantage of putting it on an OC cluster.