Hey thanks for clarifying, good to know. Well good news… I rebuilt the cluster and it’s working as expected! I think there must have been something left over in the /opt/var/couchbase after the last update of the config, so I cleared that out on this attempt.
fleetctl list-machines | grep -v MACHINE | awk '{print $2}' | xargs -I{} ssh {} 'sudo rm -rf /opt/couchbase/var/'
Using https://github.com/tleyden/couchbase-cluster-go by the way.
The issue was making me question everything I thought I knew about using the admin port. Thanks for your input guys.