I'm trying to prepare a silent install of Splunk Universal Forwader, but i'm having difficulty finding the option that unchecks the 'Use this UniversalForwarder with on-premises splunk enterprise. Uncheck if you want the UniversalForwarder to contact a Splunk Cloud Instance" that is on the main page.
The option is set by installing the app available on your Splunk Cloud instance. Open the Universal Forwarder app and click the green download button. Expand the tarball, install the 100_* folder on the forwarder, then restart it.
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