We are upgrading our deployer and search heads from version 6.2.0 to 6.2.8. Will they be compatible with the existing 6.2.0 indexers in an indexer cluster, or do we need to upgrade everything?
I slammed this bad boy into a search: http://docs.splunk.com/Special:SplunkSearch/docs?q=compatability
This one looks like jackpot: http://docs.splunk.com/Documentation/Splunk/6.3.3/Indexer/Systemrequirements#Splunk_Enterprise_versi...
Looks like you're good as long as they're all a 6.2.x flavor.