You would get into sketchy waters if you have 'secrets' that you have to distribute between splunk infrastructure devices e.g. indexers(clusters), search heads, etc.
Honestly, using a tool like puppet, chef, or ansible would best fit your use case. Get the configs in, get them out to the rest of your infrastructure with nominal effort. It's a beautiful life for IT professionals. All of these tools are very well documented and widely used. If you run into trouble with setting them up, help is literally a fingertip away. Hope this helps. Happy Splunking!
Marc
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