Hello, We were running v9.0.5 and I upgraded the master to v9.1.0.2.  This is on CentOS 7.  The upgrade ran successfully, rebooted, and splunk started with all ports opened: Checking prerequisites... Checking http port [8000]: open Checking mgmt port [8089]: open Checking appserver port [127.0.0.1:8065]: open Checking kvstore port [8191]: open These are running for splunk status: splunkd is running (PID: 4730). splunk helpers are running (PIDs: 4784 4828). Inside the instance, I can ping localhost.  But when I ping localhost 8000; it hung for a long time. Also, from my indexer instance; I can ping the master ip but not with port 8000 and 8089. I checked security groups and such.  Ports are allowed.  Nothing changed.  The UI was running before I started the upgrade. Anyone ran into this issue with the upgrade?  Thanks! ... View more