I recently added a new SH to our SHC. Show shcluster-status is good, show kvstore-status is good. I created some kvstore entries on SH1 and they replicated to SH5 (the new one). I also see the results of scheduled searches that are writting to the kvstore(s) being replicated to the new SH. I see no errors in splunkd.log. However, when ever the DMC tries to access /services/server/introspection/kvstore/collectionstats for the "KV Store: Instance" panel, it errors with
"The Rest request on the endpoint URI /services/server/introspection/kvstore/collectionstats?count=0 returned HTTP 'status not OK': code=500 internal server error'"
I can hit the other /kvstore APIs just fine, .../kvstore/replicasetstats and .../kvstore/serverstats.
If i run "| rest splunk_server=local /services/server/introspection/kvstore/collectionstats" on the new search head in a search bar I get the same error.
This is version 8.2.0 and the kvstore is using the wiredTiger storage engine.