Name Service Scope

Name service scope is an important concept for understanding RBAC. The scope in which a role can operate might apply to an individual host or to all hosts that are served by a name service such as NIS, NIS+, or LDAP. The precedence of local configuration files versus distributed databases is specified in the file /etc/nsswitch.conf. A lookup stops at the first match. For example, if a profile exists in two scopes, only the entries in the first scope are used.