I have set up a clustered Splunk deployment in a lab environment to test. By default, I see _internal and _audit as my replicated indexes. The main index is not there for some reason. I have also added two new indexes in the indexes.conf in master-apps. I verified that this is being pushed to the slave-apps directory on the peers. I also verified that repFactor was set to auto. Any reason why this wouldn't be working or something I missed?
On the search head, when I search _internal, I get results from all 4 peers, so I know that is working.