[Koha] LDAP authentication problem

[Lichtsteiner Patric (lici)]

Hi all,

We are currently evaluating koha for our university.

Right now, I’m trying to configure ldap authentication. I followed the following guides:
https://openschoolsolutions.org/koha-ldap-setup/
https://perldoc.koha-community.org/C4/Auth_with_ldap.html

I did the following configuration in /etc/koha/sites/<library name>/koha-conf.xml

 <useldapserver>1</useldapserver>
 <ldapserver id="ldapserver" listenref="ldapserver">
   <hostname>ldap://ldap.domain.ch</hostname>
   <base>ou=users,DC=domain,DC=ch</base>
   <user>CN=srvc-koha,OU=unit,DC=domain,DC=ch</user><!-- DN, if not anonymous -->
   <pass>somepass</pass><!-- password, if not anonymous -->
   <replicate>1</replicate>       <!-- add new users from LDAP to Koha database -->
   <update>1</update>             <!-- update existing users in Koha database -->
   <auth_by_bind>1</auth_by_bind> <!-- set to 1 to authenticate by binding instead of password comparison, e.g., to use A$ -->
   <principal_name>%s at domain.ch</principal_name>
   <update_password>0</update_password>
   <mapping>             <!-- match koha SQL field names to your LDAP record field names -->
      <firstname    is="givenname"      ></firstname>
      <surname      is="sn"             ></surname>
      <userid       is="uidNumber"      ></userid>
      <email        is="mail"           ></email>
      <phone        is="telephonenumber"></phone>
   </mapping>
 </ldapserver>

I’m trying to login to OPAC, but get the error message "You entered an incorrect username or password.” and the log file
 /var/log/koha/<library name>/opac-error.log 
is still empty.

How can I debug the ldap authentication in koha?

Best,
Patric