the restmap.conf settings never mentioned about "indexer_discovery" https://docs.splunk.com/Documentation/Splunk/8.0.6/Admin/restmapconf EDIT - its actually on server.conf on indexer clusters and outputs.conf on the forwarders: https://docs.splunk.com/Documentation/Splunk/8.0.6/Indexer/indexerdiscovery it got some advantages: https://docs.splunk.com/Documentation/Splunk/8.0.6/Indexer/useforwarders#Advantages_of_the_indexer_discovery_method to disable, you can simply dont set that indexer_discovery stanza.
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