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Re: "Authentication failure" on Ubuntu 18.04...
- To: Billy MacAllister <bill@ca-zephyr.org>
- Subject: Re: "Authentication failure" on Ubuntu 18.04...
- From: Robert Heller <heller@deepsoft.com>
- Date: Sun, 7 Apr 2019 14:36:59 -0400 (EDT)
- Cc: ubuntu users <ubuntu-users@lists.ubuntu.com>, centos@centos.org, Robert Heller <heller@deepsoft.com>, Openldap Technical <openldap-technical@openldap.org>
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- In-reply-to: <20190330152434.2dd0925a@keddie.ca-zephyr.internal>
- Organization: Deepwoods Software
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At Sat, 30 Mar 2019 15:24:34 -0700 Billy MacAllister <bill@ca-zephyr.org> wrote:
>
> On Sat, 30 Mar 2019 16:44:31 -0400 (EDT)
> Robert Heller <heller@deepsoft.com> wrote:
>
> > I have a server running CentOS 6 on the bare metal, running the stock
> > CentOS 6 OpenLDAP packages (openldap-2.4.40-16.el6.x86_64,
> > openldap-clients-2.4.40-16.el6.x86_64, openldap-2.4.40-16.el6.i686,
> > openldap-servers-2.4.40-16.el6.x86_64) [yes I know these are old, but
> > they *work* -- "If it ain't broke, don't fix it."]. There are two VMs
> > running on this server, one running Ubuntu 14.04 and the other Ubuntu
> > 18.04. (These two VMs are/will be servers for DRBL.) The Ubuntu 14.04
> > VM (and all of its diskless clients) are perfectly happy to talk to
> > the OpenLDAP server (slapd) running on the CentOS 6 machine. The
> > Ubuntu 18.04 VM is not. ldapsearch works everywhere though, so it is
> > NOT the server or the core ldap libraries on any of the machines
> > (partitularly the Ubuntu 18.04 VM). I can only assume that there is
> > something fishy with nslcd or the pam/ldap libraries or config on the
> > Ubuntu 18.04 VM. I have checked everything, but I am coming up
> > empty. I am thinking there might be some "trick" to getting LDAP
> > Authentication to work under Ubuntu 18.04 that I am missing.
> >
>
> I have many Bionic systems running nslcd without any problems. I
> don't think that it is nslcd that is the problem.
I am wondering if the problem is the version of
/lib/x86_64-linux-gnu/security/pam_ldap.so
I have installed. There appears to be *two* versions available:
One from the package libpam-ldapd and one from the package libpam-ldap.
YES! I just installed libpam-ldapd (replacing the previously installed
libpam-ldap), and now things are working!
>
> When you are debugging you should turn of nscd. It just gets in
> the way. If it were me I would make sure that stats logging is on
> on the LDAP server. Then I would watch the LDAP server log as I
> attemptes a login on the 18.04 system.
>
> Bill
>
>
>
--
Robert Heller -- 978-544-6933
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