Moodle 3.1 LDAP Problem after upgarding to Ubuntu 16.04 LTS

Moodle 3.1 LDAP Problem after upgarding to Ubuntu 16.04 LTS

by Bit One -
Number of replies: 7

Hello,


I  'm using Moodle 3.1 with LDAP authentication and everything was good until I upgraded the server to Ubuntu 16.04 LTS.


First I had the issue that php-ldap wasn't installed and after installing LDAP module doesn't seem to be connecting, getting the usual


"LDAP-module cannot connect to any servers: Server: 'x.x.x.x:3268', Connection:'',Bind result: '' " error.


I 've run ldapsearch through command line and using the same settings as in Moodle I 'm getting back the requested info from AD domain controller.

I 'm thinking of something to do with PHP 7 perhaps?

Has anyone experienced similar issues?


Thank you in advance,

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In reply to Bit One

Re: Moodle 3.1 LDAP Problem after upgarding to Ubuntu 16.04 LTS

by Emma Richardson -
Picture of Documentation writers Picture of Particularly helpful Moodlers Picture of Plugin developers

Check selinux isn't enabled.  Did you run ldapsearch from the same server that Moodle is on?

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In reply to Emma Richardson

Re: Moodle 3.1 LDAP Problem after upgarding to Ubuntu 16.04 LTS

by Bit One -

SELinux is not enabled by default in Ubuntu. apparmor is used instead however removing it did not help I 'm afraid.

Yes, ldapsearch run from same server.

Looking at the mdl_config_plugins table for "auth/ldap" in MySQL I noticed that the bind password is stored in clear text i.e. not encrypted. Is that right?

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In reply to Bit One

Re: Moodle 3.1 LDAP Problem after upgarding to Ubuntu 16.04 LTS

by Emma Richardson -
Picture of Documentation writers Picture of Particularly helpful Moodlers Picture of Plugin developers

Yes, the bind password is stored in clear text.

I would double check the Moodle settings and re-enter them all.  Sometimes an errant space can cause all sorts of issues..

 

 

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In reply to Emma Richardson

Re: Moodle 3.1 LDAP Problem after upgarding to Ubuntu 16.04 LTS

by Bit One -
Thank you Emma. You might be right! 


As said below, disabling the plugin and re-enabling has solved my issue. Probably a 'glitch' don't know why.


Thank you for your replies! smile

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In reply to Emma Richardson

Re: Moodle 3.1 LDAP Problem after upgarding to Ubuntu 16.04 LTS

by Bit One -

Hi! Thank you for your reply.

SELinux is not enabled by default on Ubuntu. Apparmor is used instead however disabling it has not resolved the issue I 'm afraid.


I 've run ldapsearch from the same server with the same details as stored in the mdl_config_plugins table for "auth/ldap" (MySQL) and worked as intended.

In case you know, does PHP7 have disabled by default things that Moodle needs to work?




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In reply to Bit One

Re: Moodle 3.1 LDAP Problem after upgarding to Ubuntu 16.04 LTS

by Bit One -

UPDATE:

I 've updated to Moodle version 3.3 and the problem persists.


Any other ideas ?

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In reply to Bit One

Re: Moodle 3.1 LDAP Problem after upgarding to Ubuntu 16.04 LTS

by Bit One -

Ok this is weird. 


In Moodle 3.3 I am able to disable the 'LDAP server' plugin (unlike v.3.1)  through /Site Administration/Plugins/Authentication/Manage authentication and that seems to have been the answer to the problem.

Re-enabling the plugin has resolved the issue!

I did reboot the server before that as well. 


Really don't know how or why this happened but I 'm glad it's fixed.


Thanks to everyone who has put a little bit of thought on this!


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