topic Re: passwd and group in Operating System - HP-UX

passwd and group

Linda Lux — Mon, 29 Sep 2003 15:50:44 GMT

For NFS mounts, what should the user 'nobody'
be defined as in the passwd file? I am also running Samba, so I have to be careful how I have it defined, this is what it looks like
now:
nobody:*:207:99::/:

and the /etc/group shows:
nogroup:*:-2:
nobody::99:nobody

Is this the reason why my 'mv' and 'cp' to a
mounted Omni-NFS system is giving me permission denied

Linda

Re: passwd and group

Michael Steele_2 — Mon, 29 Sep 2003 15:58:25 GMT

Yeah, that's been modified. Nobody is used by NFS for anonymous logins. Are you running something like NFS and Clearcase? Automounter or Autofs?

nobody should have an UID and GID of -2, with no shell

nobody:*:-2:-2::/:

Who is UID 207?

What group is 99?

Re: passwd and group

Linda Lux — Mon, 29 Sep 2003 16:03:41 GMT

If I change it to that then Samba doesn't work
Linda

Re: passwd and group

Sundar_7 — Mon, 29 Sep 2003 16:26:32 GMT

Hi Linda,

The ideal platform for NFS is that the user IDs must match across the NFS server & NFS clients.

If the user ID doesnt match then the file access requests will be handled using the user "nobody"s UID which is -2 by default.

Also note by default NFS client root get mappped to "nobody" in NFS server.

So even if u r the root in the NFS client, "permission denied" error messages are possible.

Thanks,

Sundar.

Re: passwd and group

Linda Lux — Mon, 29 Sep 2003 16:31:25 GMT

actually my userids match on both, along with the group ids of 20 or higher.
Linda

Re: passwd and group

Sundar_7 — Mon, 29 Sep 2003 16:51:12 GMT

Which is the user getting "permission denied" message ?

GREP username from /etc/passwd on both the NFS client & Server.

Re: passwd and group

Darren Prior — Tue, 30 Sep 2003 03:51:35 GMT

Hi Linda,

You should be able to configure Samba to use a different user, eg smbnull. If you are using CIFS/9000 then it will have created the smbnull account as part of the install.

regards,

Darren.

Re: passwd and group

T G Manikandan — Tue, 30 Sep 2003 04:30:24 GMT

Nobody is a inbuilt user for Network file system.

the UId for the user is -2.
Samba does not recognise negative value uid's.

Samba has a equivalent user 'guest'.you can use that account.

REvert

Re: passwd and group

Linda Lux — Tue, 30 Sep 2003 08:15:17 GMT

I have attached my smb.conf, I am not a sys
admin - just taking over for the one that our company cut in its downsizing.
Can you help me with this 'guest' acct and
how I should have it in passwd and /etc/group
Thanks
Linda

Re: passwd and group

Darren Prior — Tue, 30 Sep 2003 09:37:35 GMT

You can add the user and group via SAM. Ensure the account is locked as no-one needs to login using it. Pick a unique uid and gid - smbnull uses 101 and 101.

As for Samba - use the following line:

guest account = guest

in each share that requires guest access.

I'd also suggest you get a copy of O'Reilly's Using Samba - which is very useful if you're likely to be doing any other Samba-related admin work. Guest account stuff is mentioned on p162.

regards,

Darren.