How do I configure a forwarder to forward *NIX App data to a specific "OS" index on a remote Splunkd server?
By default, the Splunk *NIX app will send all data to the "os" index. If you enable forwarding on a system in addition to the *NIX app, data will be sent to the "os" index on the receiver (Splunk indexer). There are a few things you can do with respect to forwarding that particular data:
From your question, it sounds like you simply want to change #2. To alter the index where the Forwarder will send data, the inputs.conf file for the *NIX app on the Forwarder will need to be edited. Specifically, you should replace all of the "index=os" parameters to become "index=new_os_index" (or whatever index name you want). Additionally, you will need to make sure you have created this new index (new_os_index) on your Splunk indexer. So to review: