I've one App which has Add-on builder created configuration page with API key, proxy settings, etc. This configuration is going to store in _settings.conf in local.
If I configure this on one of the search head, will this configuration replicates to other search heads?
If Yes - Any document that can say that custom conf files replicates to other search heads.
If No - How should I configure App?
The cluster replicates changes made through these methods:
The Splunk CLI
The REST API
So yes, using a custom python command to modify configurations will not trigger a configuration update. If you're editing this way, it would be better to finalize the script with a hit against the rest config endpoint for the app....