Can the ricci user in cluster on RHEL 6 be disabled?

Issue

• Our company security standard specifies that generic accounts (root, jboss, etc) cannot be accessed directly. sudo should be used to switch to these accounts).
  The ricci configuration documentation specifies that ricci requires a password account and will have to be provided the first time one node executes ricci to communicate with another. This violates our security policy. Can you please provide instructions on running ricci without a password (e.g. with a key) or any other method where the ricci /etc/shadow has field would be empty?