[Zentyal](http://zentyal.org), The Linux Small Business Server includes the most important services for a small or medium company. Most of the services are integrated around OpenLdap. Since version 3.1, Zentyal uses Samba4 as a Directory and File Sharing services.
I'm maintaining the computers in the Francophone center in University of Sofia. Everything in this place is with Ubuntu workstations.
There was a major hardware update this year. We got new servers, workstations and laptops.
Following the info from [this](http://forum.zentyal.org/index.php?topic=12925.0) forum topic, I installed Ubuntu 12.04 LTS for the desktops and Zentyal 3.2 as a Directory and file server. Home directories are on NFS share in Zentyal, so that the users can use their own profiles on any workstation.
First I decided to use Centrify DC Express ([Documentation](https://help.ubuntu.com/community/DirectControl)) as an Active Directory client Samba shares, like in the forum topic. This type of setup gave me the possibility to use Samba 4's advanced directory options because CentrifyDC immitates M$ Windows client and the security of Samba. It seemed to work in the first test, but then bugs appeared. There are some privilege issues with Samba. For example, PulseAudio cannot initialize on boot because it cannot create the `~/.pulse` directory. There were the simmilar issues with Firefox on some of the profiles.
Then I decided to use NFS with Centrify but another issue appeared. Centrify makes UID and GID different than the ones in Zentyal and users cannot write to their own profiles. NFSv4 can solve this problem with remapping, but it's still not documented and there's a lack of information on internet. If you are interested in it, you can search for `/etc/idmapd.conf`.
So, I choosed the standard LDAP setup, like in the forum topic and NFS. Well, [another bug](https://bugs.launchpad.net/ubuntu/+source/at-spi2-core/+bug/870874) appeared but it can be fixed with a small hack.
You must comment the "If" statement about gsettings (dconf) in `/etc/X11/Xsession.d/90qt-a11y` :
```bash
# -*- sh -*-
# Xsession.d script to set the QT_ACCESSIBILITY env variable when accessibility
# is enabled.
#
# This file is sourced by Xsession(5), not executed.
if [ -x "/usr/bin/gsettings" ]; then
a11y_enabled=$(gsettings get org.gnome.desktop.interface toolkit-accessibility)
if [ "$a11y_enabled" = "true" ]; then
export QT_ACCESSIBILITY=1
fi
fi
```
```bash
# -*- sh -*-
# Xsession.d script to set the QT_ACCESSIBILITY env variable when accessibility
# is enabled.
#
# This file is sourced by Xsession(5), not executed.
#if [ -x "/usr/bin/gsettings" ]; then
# a11y_enabled=$(gsettings get #org.gnome.desktop.interface toolkit-accessibility)
# if [ "$a11y_enabled" = "true" ]; then
# export QT_ACCESSIBILITY=1
# fi
#fi
```
According to the forum topic, you need to install these packages on the Ubuntu client to run LDAP:
```bash
$ sudo apt-get install install libnss-ldap libpam-ldap libpam-mount winbind smbclient cifs-utils ldap-utils #Ignore all requests, just hit Enter
* It's better to use TCP because sometimes transferring big files freezes.
* Nolock disables file locking. According to the manpages, this option is deprecated and is required just for an older servers. I think it's better to be used because sometimes Firefox locks it's profile when the session freezes and the users cannot login from other machines.
* rsize and wsize specifies the chunks of data that the client and server pass back and forth to each other.
This configuration works for me, but maybe the `options=` tag must be in `<mntoptions>` tag.
**About the server**
Zentyal is well documented. You can install and configure all the needed components in ~30 minutes. Just check [Zentyal.org](http://zentyal.org).
Additionaly, you need to configure the NFS server. These packages must be installed:
