Re: Cannot ID LDAP User On LDAP Client

[Anton Chu <anton.chu@telecommand.com>]

On another machine, tried this howto after purging the above above packages.

http://www.opinsys.fi/en/setting-up-...u-10-04-alpha2

sudo apt-get install libnss-ldapd libpam-ldapd

Still the same outcome.  I can ldapsearch, getent, etc. but id cannot show the ldap users.

here's my /etc/ldap.conf
cat /etc/ldap.conf | grep -v ^# | grep -v ^$
base dc=example,dc=com
uri ldap://10.112.18.2
ldap_version 3
bindpw secret
rootbinddn cn=admin,dc=example,dc=com
bind_policy soft 

pam_check_host_attr yes
pam_password md5
nss_base_passwd        ou=People,dc=example,dc=com
nss_base_shadow        ou=People,dc=example,dc=com?one
nss_base_group        ou=Groups,dc=example,dc=com?one

On Thu, Dec 2, 2010 at 9:00 AM, Anton Chu <anton.chu@telecommand.com> wrote:

Ok here's what you suggested:

root@webtest111:/etc/pam.d# id tony

id: tony: No such user 

root@webtest111:/etc/pam.d# getent passwd tony
root@webtest111:/etc/pam.d# getent passwd | grep tony
tony:x:1005:10000:Tony Montana:/home/tony:/bin/bash
root@webtest111:/etc/pam.d# /etc/init.d/nscd stop
 * Stopping Name Service Cache Daemon nscd                               [ OK ]
root@webtest111:/etc/pam.d# getent passwd | grep tony
tony:x:1005:10000:Tony Montana:/home/tony:/bin/bash
root@webtest111:/etc/pam.d# getent passwd tony
root@webtest111:/etc/pam.d#

I'll start a reinstall of the other packages instead of libnss-ldap and libpam-ldap. 

Thanks for the tips. 

Regards

On Wed, Dec 1, 2010 at 11:48 PM, Buchan Milne <bgmilne@staff.telkomsa.net> wrote:

On Wednesday, 1 December 2010 22:37:56 Anton Chu wrote:
> I've setup an Ubuntu 10.10 LDAP Client to authenticate off my LDAP server.
> I've install the following:
>
> sudo apt-get install libpam-ldap libnss-ldap nss-updatedb libnss-db
> nscd ldap-utils pam_ccreds
>
> Here's my /etc/nsswitch.conf:
>
> passwd: files ldap [NOTFOUND=return] db
>
> > group: files ldap [NOTFOUND=return] db
> >
> > shadow: files ldap
> >
> > hosts: files dns
> > networks: files
> >
> > protocols: db files
> > services: db files
> > ethers: db files
> > rpc: db files
>
> I can nss_updatedb ldap succssfully:
> # nss_updatedb ldap
> passwd... done.
> group... done.
>
> I can getent passwd, getent passwd shadow, getent group just fine and
> they all show all my ldap users.

Please compare these two:

$ getent passwd |grep tony
$ getent passwd tony

If the first succeeds (returns a line looking like /etc/passwd), and the
second fails (returns nothing), then you probably have a negative cache from
nscd. Stop nscd, and test again.

> However, I cannot do an id ldapuser
>
> ex:
> $ id tony
> id: tony: No such user

[...]

> ID works just fine with my local users on my local machine so somehow
> it's not able to read the ldap users.
>
> Any insights appreciated.

In some environments, I do use nss_ldap+nss_db/nss_updatedb+nscd, but one of
the newer options (e.g. sssd) may be a better option.

Regards,
Buchan