Since we have moved our indexers cluster servers behind a firewall, the DMC is showing all indexers as "unreachable" in the "Overview" and "Instances" dashboards ...
But the "Indexer Clustering: Status" dashboard shows them all with Status "Up".
I guess this is due to missing opening a particular protocol/port on our indexer cluster firewall. Which rule shall we add?
To be complete Port TCP 8089 is already open in the index cluster firewall rules
Thanks for you help
514 - network input port
8000 - web port (clients accessing the Splunk search page)
8080 - index replication port
8089 - management port (splunkd, aslo used by deployment server)
9997 - indexing port (web interface)
9998 - SSL port