How to Install and Configure OpenLDAP on Ubuntu 20.04 LTS

Install and Configure OpenLDAP Server on Ubuntu 20.04

In this blog post you’ll get to figure out how to Install and configure OpenLDAP Server on Ubuntu 20.04 LTS. OpenLDAP is a free and open source execution of the Lightweight Directory Access Protocol created by the OpenLDAP Project and delivered under OpenLDAP Public License.

Install and Configure OpenLDAP

Set Hostname for Ubuntu

Before beginning of installation, we need to set up hostname for Ubuntu server

$ sudo hostnamectl set-hostname


Add IP to the file /etc/hosts


$ vim /etc/hosts        ldap
Replace with your hostname or legitimate domain name

Install OpenLDAP Server on Ubuntu


$ sudo apt update
$ apt -y slapd ldap-utils


During installation, you will be provoked to set LDAP administrator password.
01 ldap
Affirm the password and proceed.
02 ldap
Affirm your installation while using the command

$ cat slapcat

Add base dn for users and groups

$ vim basedn.ldif
dn: ou=people,dc=domain,dc=com
objectClass: organizationalUnit
ou: people
dn: ou=groups,dc=domain,dc=com
objectClass: organizationalUnit
ou: groups


Replace domain and com with your own domain

Now you can add file by beneath command

$ ldapadd -x -D cn=admin,dc=domain,dc=com -W -f basedn.ldif
Enter LDAP Password:
adding new entry “ou=people,dc=domain,dc=com”
adding new entry “ou=groups,dc=domain,dc=com”


Add User Accounts and Groups

Generate password for user account

$ slappasswd
New password:
Re-enter new password:


Create ldif file for users

$ vim ldapusers.ldif
dn: uid=username,ou=people,dc=domain,dc=com
objectClass: inetOrgPerson
objectClass: posixAccount
objectClass: shadowAccount
cn: username
sn: Wiz
userPassword: {SSHA}Zn4/E5fOrakzaiFY/armlicenseGulHoffmann3x0d
loginShell: /bin/bash
uidNumber: 1000
gidNumber: 1000
homeDirectory: /home/username

Replace username with original username to add
dc=domain,dc=com with your domain
cn and sn with username
{SSHA}Zn4/E5fOrakzaiFY/armlicenseGulHoffmann3x0d with your hash password

Add account by below command

$ ldapadd -x -D cn=admin,dc=domain,dc=com -W -f ldapusers.ldif
Enter LDAP Password:
adding new entry “uid=username,ou=people,dc=domain,dc=com”


The same can be done to groups and create ldif file:

$ vim ldapgroups.ldif
dn: cn=username,ou=groups,dc=domain,dc=com
objectClass: posixGroup
cn: username
gidNumber: 1000
memberUid: username

Add Group

$ ldapadd -x -D cn=admin,dc=domain,dc=com -W -f ldapgroups.ldif
Enter LDAP Password:
adding new entry “cn=username,ou=people,dc=domain,dc=com”

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