In secure mode, VCS assigns guest privileges to all native users.
When you assign privileges for clusters running in secure mode, you must specify user names in one of the following formats:
To add a cluster-level user, specify only the user name.
To add a node-level user, specify the user name in the username@domain format.
See About managing VCS users from the command line.
You cannot assign or change passwords for users that use VCS when VCS runs in secure mode.