I have $SPLUNKDB set up in a NAS storage. But the indexer is installed in a VM (say VM1) running on splunk version 6.3.4.
Now I want to migrate the indexers to another VM (VM2) with newer splunk version 6.6.12 keeping the same NAS location as $SPLUNKDB.
Is it possible? I have heard that no two indexer will see each other's indexed files. Is that true?
In that case what approach I can take to migrate my indexer?
Why would you do this? Working with VMs makes this kind of thing easy so you should not need 2 indexers at the same time. Your forwarders can buffer events for the short time that it would take to upgrade your VM/splunk and have it come back up. You are overcomplicating your situation.