WebTop4 and Samba4 AD on NS 7

Hi everybody!

I decided to start this topic because of some facts that have happened in the last few months:

  • The decision made by Inverse regarding SOGo.
  • The decision made by Nethesis to use WebTop as the main email groupware app on NS 7.
  • Samba4 Active Directory on NS 7.

There are a lot of discussions here about WebTop and NS but I think is better to split them in two main directions, based on how the users are authenticated:

  • by OpenLDAP
  • by Samba AD:
    - locally
    - remotely

Thus, we will have two distinct approaches, each with its peculiarities, at least during the first configuration.
Maybe I’m wrong and there is no reason to do this split.

Anyway, in this topic I will address the following situation: WebTop with Samba AD running locally.
This situation is pretty common for SOHO environment, when we have a single dedicated server (bare metal server).

I invite all who want to test or have tested this kind of configuration, to share their own experience or to rise issues.

I’m sure that the Nethesis Team (@alefattorini, @davidep, @filippo_carletti, @giacomo) and the WebTop Team (@gabriele_bulfon, @raffaele_fullone) will be here to assist and help us, when necessary.

Kind regards,


Because today I made some tests with SOGo and I don’t want that the installation of the NS Beta2 to be altered, tomorrow I will do a new installation from scratch and I will begin the tests with WebTop and Samba AD.


Any test involving Samba AD on ns7 must be aware of this bug:

Please let me know if you hit that bug!

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Hi Davide,

Yes, the bug hit me!:smirk:

After that, I created the user without password and I changed the password after, without issues.
The next user was created without issues, even I set the password during the process.

I’m not at the office now.
I will retest from scratch in the afternoon.


Could you share your system journals, like @JeffBales did here?

You should preserve the evidence of the failed command during the esmith event: “Failed to get machine PTY…”

I will put on Google Drive and I will share the link.


All logs (/var/log):

All journal (/root):

Unfortunately, today I didn’t “hit” the office.
Tomorrow morning I will start the new tests with WebTop and Samba4 AD. I hope!

After I have followed the installation procedure as described here:

Failed to get machine PTY: No such file or directory

I have installed and configured these packages from Software center:

  • Email (Email server and filter)
  • POP3 proxy (Intercept POP3 connections and scan messages for virtus and spam)
  • SMTP proxy (SMTP proxy)
  • Basic firewall (Configure network adapters and basic firewall) - automatically installed

Then, I have installed

  • WebTop groupware (WebTop groupware)
    package from Software center.

After I have launched the WebTop app from Status -> Application and I introduced the login credentials (Username: admin; Password: admin), the following error page has appeared, even if the server was rebooted (please see the attached print screen).

Link for “Tomcat” folder from /var/log:


Please advise!

Is not the first time when I encountered this issue.
At those times, there were only simple tests to see how WebTop looks and I solved by reinstalling the NS. So, is not related to the “PTY” issue.

It looks like something is wrong with the authentication config. Try to execute:

signal-event nethserver-webtop4-update

Hi Giacomo,

Thank you for your sugestion.

I tried.
Unfortunately, didn’t work.
The same message.


It seems to me like a PostgreSQL issue.

I found this “main” error messages in /var/log/tomcat/localhost.2016-09-11.log:

Sep 11, 2016 2:47:57 PM org.apache.catalina.core.ApplicationContext log
SEVERE: Error loading profile org.postgresql.util.PSQLException: ERROR: relation “groups_users” does not exist
Position: 15

Sep 11, 2016 2:47:57 PM org.apache.catalina.core.ApplicationContext log
SEVERE: error creating environment com.sonicle.webtop.WebTopException: ERROR: relation “groups_users” does not exist
Position: 15

Sep 11, 2016 2:47:57 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [Start] in context with path [/webtop] threw exception [java.lang.NullPointerException] with root cause java.lang.NullPointerException

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It seems something is missing in the db, I’m trying to reproduce it.
In the meanwhile, check if the db has been correctly created:

  1. Open the webtop db using psql:

    su - postgres -c “psql webtop”

  2. Try a simple query:

    select * from groups_users;

This is the output from my installation:

webtop=# select * from groups_users;
uid | iddomain | grouplogin | userlogin
(0 rows)

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The database has not been created.
You should try to dig in the log when webtop was installed, the error should be inside the nethserver-webtop4-update event.

This is the scripts which creates the db:/etc/e-smith/events/actions/nethserver-webtop4-conf

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Here is the link to the message log regarding WebTop installation:


I have installed WebTop for many times.
Sometimes it works from the first installation attempt, sometimes I have encountered this issue.

I found this error in your log:

Sep 11 01:56:24 pdc-ad esmith::event[22709]: ERROR: language “plpgsql” already exists

It seems something related stored procedure. Maybe Webtop does something during the start?
I hope @gabriele_bulfon have some ideas :slight_smile:

By the way I couldn’t replicate the problem.

Yeah …
As I told you, sometimes it works from the first installation attempt, sometimes I have encountered this issue.

I will wait @gabriele_bulfon before reinstall NS.

Or, how could I uninstall WebTop “in all” (webTop and all dependencies) so after that to reinstall it from Software center?

Thank you,


there is a postgres function we have created for Nethesis to allow automatic deletion of a single user when that user is deleted from the entire system (ldap etc).
This function is written in plpgsql.
For this reason, the webtop initialization script of NethServer has sql code to ensure that this language is installed (via a “create language plpgsql”).
I bet there are times where postgres is already in use on the system and have plpgsql already installed, causing the error on that sql statement.

Is this the case?



Hi Gabriele,

Thank you for your response.

First, I don’t know what do you mean when you refer to “language”. Is about “programmer language” or about “language” as English, Italian, …
If is the last case, I always use English (US).

The PGSQL was installed by WebTop.
The installation of the WebTop was like I have described above.

Usually, when I have installed WebTop I had only one user created: Samba AD Administrator.

I will reinstall NS and WebTop from scratch, by this procedure:

  • Install NS 7b2 from scratch (bare-metal server).
  • Make all updates.
  • Edit the “Organizations contacts”.
  • Edit the “Self-signed certificate”.
  • Install the “Account provider: Samba Active Directory” package, from Software center.
  • Install the “fix” for Samba AD by @davidep
  • Configure Samba AD
  • admin-todo reminder on Dashboard for Administrator’s password: Change password for user administrator@test.abt.ro (first time, from “Nethesis,1234”)
  • Install Email (Email server and filter)
  • Install POP3 proxy (Intercept POP3 connections and scan messages for virtus and spam)
  • Install SMTP proxy (SMTP proxy)
  • Install Basic firewall (Configure network adapters and basic firewall) - automatically installed
  • Install WebTop groupware (WebTop groupware)

One question please (also for @davidep and @giacomo)

The FQDN of the server will be “pdc-ad.test.abt.ro”.
As I said, I intend to test this configuration as AiO Server.
The registrations for mail server (MX, …) are kept on an External Name Server.
I think that I must to create an alias: Configuration -> DNS -> Server alias -> Create New: mail.test.abt.ro. Is this correct?
If YES, when I must create this alias: before install WebTop, or after? (By me, doesn’t matter, but …)



It is the language used by the postgres store procedures.
It looks like some of install steps preceding Webtop, is already creating the plpgsql, and this is not a considered case by the NethServer Webtop install script.
Maybe @giacomo can find some way to run all the webtop install script without the “create language”, and create that in a separate script that is not blocking when failing?


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You don’t need it (@davidep please correct me if I’m wrong).

I suppose the issue is in this line: https://github.com/NethServer/nethserver-webtop4/blob/f97de3c4dfb7268b3ec083320052aa8e655c55f2/root/usr/share/webtop/webtop.sql#L2819

Am I correct?
Can we replace it with the following?


From: https://www.postgresql.org/docs/9.0/static/sql-createlanguage.html

I’m ok also with removing the entire line, but I have no idea about the effects.


Yes, I think this is the solution, just check that you have version 9 of Postgres.
In any case, just check it works on a bare machine where you didn’t install webtop yet.

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