https://help.ubuntu.com/lts/serverguide/openldap-server.html

if error occurs in reinstall, try this:

"

1)sudo apt-get purge slapd

2)sudo apt-get install slapd ldap-utils

"

 

you can configure ldap after install:

When the installation is complete, we actually need to reconfigure the LDAP package. Type the following to bring up the package configuration tool:

sudo dpkg-reconfigure slapd

You will be asked a series of questions about how you'd like to configure the software.

• Omit OpenLDAP server configuration? No

• DNS domain name?

  • This will create the base structure of your directory path. Read the message to understand how it works.
  • There are no set rules for how to configure this. If you have an actual domain name on this server, you can use that. Otherwise, use whatever you'd like.
  • In this article, we will call it test.com 

• Organization name?

  • Again, this is up to you
  • We will use example in this guide. 

• Administrator password?

  • Use the password you configured during installation, or choose another one 

• Database backend to use? HDB

• Remove the database when slapd is purged? No

• Move old database? Yes

• Allow LDAPv2 protocol? No

https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-a-basic-ldap-server-on-an-ubuntu-12-04-vps

The ldap-utils package comes with enough utilities to manage the directory but the long string of options needed can make them a burden to use. The ldapscripts package contains wrapper scripts to these utilities that some people find easier to use.

Install the package:

sudo apt-get install ldapscripts

#################################################

then add two nodes ou=Groups and ou=Users to the LDAP, before add a group to LDAP a stupid bug:

if the passwd contain some special character like"@",","....anything like that, then you will get error when add group use 'sudo ldapaddgroup test',like:

error adding group to ldap

so,give it a simple 'secret' passwd, like 'dog','monkey',,,,

############################################################################################## step by step :

first:

1)sudo apt-get purge slapd

2)sudo apt-get install slapd ldap-utils

do like above each some stupid error occurs that you can't solve.

second:

sudo dpkg-reconfigure lapd #configure according to the link2 above, you'd better don't configure it by hand.

third:

sudo apt-get install ldapscripts #install a convenient tools

and then, configure ldapscripts's configure file /etc/ldapscripts/ldapscripts.conf, add sentences, like:

SERVER=localhost

BINDDN='cn=admin,dc=example,dc=com'

BINDPWDFILE='/etc/ldapscripts/ldapscripts.passwd'

SUFFIX='dc=example,dc=com'

GSUFFIX='ou=Groups'

USUFFIX='ou=Users'

fourth:

add passwd to ldapscripts.passwd file :

sudo sh -c "echo -n 'monkey' > /etc/ldapscripts/ldapscripts.passwd"

then: you can operate LDAP using ldapscripts commands according to link 1.

warning: ldapscript will always return 'error adding group qa to LDAP',if the group already exists

start LDAP server:  /etc/init.d/lsapd