topic Re: nfs - change uid / gid of the mounted FS in Operating System - HP-UX

nfs - change uid / gid of the mounted FS

g3jza — Thu, 31 Mar 2011 13:40:03 GMT

Hi,
I've got this task to do:

HP-UX will NFS export a FS, so it will act as NFS server. The uid of this FS is 'xxx' and group id is 'yyy' for example.

The NFS client on the RHEL would like to see this FS exported under different uid / gid , so 'zzz' , how can this be achieved in NFS?

Thanks for your ideas.

Re: nfs - change uid / gid of the mounted FS

Dennis Handly — Sat, 02 Apr 2011 06:42:30 GMT

You can't, that's part of the security.
Ideally, you need to make sure the UID/GID of all machines match.

With Samba, you can match up Windows users with Unix UIDs. It may work for Linux?

Re: nfs - change uid / gid of the mounted FS

Ismail Azad — Sat, 02 Apr 2011 10:16:23 GMT

Hi q3,

Anyways... Using the NFS protocol ideally requires user and group consistency atleast_on_HPUX which is exactly the opposite of what you are trying to acheive... Well people go with NIS/LDAP to acheive this... Any reason why RHEL would want to see these UID's as different??

Regards
Ismail Azad

Re: nfs - change uid / gid of the mounted FS

g3jza — Sun, 03 Apr 2011 10:31:03 GMT

I thought this was possible by remapping uids on the client side. My work-mate told me that it's possible in nfsv4, in linux (Ubuntu/debian) the remapping needs to be made in /etc/idmapd.conf.

Ismail: The user on the client needs to be different from server side, because different user on the client side needs to be able to have read/write access to that exported FS.

I was also thinking about the final solution to be changed to Samba/CIFS, instead of NFS

Re: nfs - change uid / gid of the mounted FS

Dennis Handly — Sun, 03 Apr 2011 18:04:38 GMT

>because different user on the client side needs to be able to have read/write access to that exported FS.

Have you thought of putting that user in a group that has R/W access?
I was also thinking of ACLs but don't know if they work over NFS.

Re: nfs - change uid / gid of the mounted FS

g3jza — Sun, 03 Apr 2011 19:08:53 GMT

Dennis: How simple was this :) , thanks for a final solution.

Re: nfs - change uid / gid of the mounted FS

g3jza — Sun, 03 Apr 2011 19:09:50 GMT

solved.