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problem about smooth migration from files to ldap

 Hi all:

I got a non-technical problem here.

I have managed to solved the problem of using OpenLDAP to store user and group infomation and successfully logined into Linux Servers using OpenLDAP.

In the Linux Server, i got LOCAL groups named like `devel` and `www`, and LOCAL users belong to these groups. Through the /etc/sudoers file, I give different groups with different privileges.

In the OpenLDAP database, i defined my own `devel` and `www` groups. and users in OpenLDAP belongs to their corresponding groups.

The problem is , if i add ldap into /etc/nsswitch.conf, then only the first pair of (users/groups) get the right privileges from /etc/sudoers. That means, if I put `ldap` before `files`, only the users login through OpenLDAP can use the privileges defined in /etc/sudoers. But if I put `files` before `ldap` in /etc/nsswitch.conf, then only Local (users/groups) pair got the privileges from /etc/sudoer2.

I got a bad solution here: give different names to groups from OpenLDAP, and define new privileges in /etc/sudoers for these groups. and after migration, delete the old local groups and old sudo privileges. But this seems to be not that good a solution.

I wonder, what might be the best or right way to migrate from (local user/group) to (ldap user/group) smoothly.

Any clue or advice will be greatly appreciated.

Thank you In advance.