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Documentation Project for Carme

Install LDAP

Install LDAP on the Headnode

In order to generate a LDAP datebase you can use the script via

# bash

You will get a basic LDAP database, without sslv3 encryption.

Setup User Management System

It is strongly recommended to install phpldapadmin, a web-frontend for the LDAP database. For debian based systems you can install it using

# apt update
# apt install -y phpldapadmin

You have to configure the webinterface by editing the configuration file located in /etc/phpldapadmin/config.php.

# vim /etc/phpldapadmin/config.php
# nano /etc/phpldapadmin/config.php

First you should change the timezone in the line containing $config->custom->appearance[‘timezone’] accordingly, e.g.

$config->custom->appearance['timezone'] = 'Europe/Berlin';

Make sure all arguments are passed in single quotes ‘ ‘.

Next you have to add the servername in the line $servers->setValue(‘server’,’name’,’…’);, e.g.

$servers->setValue('server','name','My Server');

Change the IP address for the LDAP communication, as it was set in the CarmeConfig under $CARME_LDAP_URI ( $servers->setValue(‘server’,’host’,’…’) )

$servers->setValue('server','host','CARME_LDAP_URI IP Adress');

Optionally, if you want to set a default user for the tool, you can set it with


It is strongly recommended to uncomment the following line in order to avoid anonymous login from the outside


phpldapadmin is now configured. You can login to the tool with your browser, using the address [?].

Install LDAP on the clients

On the clients we have to install the following packages:

# apt -y install libnss-ldapd libpam-ldap ldap-utils nscd

You will be prompted to specify the IP address of the headnode and the domain name of the LDAP database (see the CarmeConfig).

LDAP is now ready to be used on the cluster.