Carlos Santana wrote: > I intend to install lustre file system on the systems. It does not > support LDAP and need to have etc passwd/groups database. All file > system clients need to have same passwd and groups so that UID and > GID are the same when they contact file system server. So I am not > sure, how will I manage this. Any suggestions? > NIS is the old fashion way, and its not considered particularly secure as it uses IP addresses as authentication, so keep the whole cluster behind a firewall. with NIS, there is one master system with the yp/passwd and yp/shadow files (as well as groups, hosts, etc), and these are pushed to all the other systems on updates. users on any system would change their password with `yppasswd` command, which pushes the changes to the NIS master.