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