Single node cluster adjustments
Update the following changes, then commit and push.
Reduce Longhorn replica count
defaultClassReplicaCount to 1:
# If you have three or more nodes for storage, use 3; otherwise use 2
defaultClassReplicaCount: 2 # TODO run DR test to see if we actually need 3
Disable automatic upgrade
Because they will try to drain the only node, the pods will have no place to go. Remove them entirely:
rm -rf system/kured
Commit and push the change. You can revert it later when you add more nodes.