Are you looking for steps to install OpenLDAP on Ubuntu? We can help you with it.
OpenLDAP is an open-source implementation of the Lightweight Directory Access Protocol(LDAP) which is very flexible, and, of course, is free.
It is useful in managing OpenVPN infrastructure, Kubernetes and Docker implementations, backend Jenkins, and thousands of other applications. Also, it is used by organizations that want to connect users to more technical IT resources, such as Linux-based applications, servers, and storage.
Here at Bobcares, we have seen several such OpenLDAP related queries as part of our Server Management Services for web hosts and online service providers.
Today we’ll take a look at how to install OpenLDAP on Ubuntu.
How to install and configure LDAP on Ubuntu
Now let’s take a look at how our Support Engineers install OpenLDAP.
Before we begin the installation process, we must install the necessary software. Luckily, the packages are all available in Ubuntu’s default repositories.
First, we run the below command in the terminal window to take care of the update/upgrade.
$ sudo apt-get update $ sudo apt-get upgrade
Once that finishes, we’re now ready to install OpenLDAP. For that, we run the below command.
$ sudo apt-get install slapd ldap-utils
During the installation, we need to select and confirm an administrator password for LDAP.
After the installation completes, we modify the default Directory Information Tree (DIT) suffix. We’ll change our DIT to dc=bobcares, dc=com. For that, we run the below command.
$ sudo dpkg-reconfigure slapd
For the first question, we answer No(omitting an initial configuration). Next, need to configure the DNS domain name, Organization name, and then enter/verify the admin password we created during the installation.
After doing that, we select MDB as the database backend and then select No for removing the database when slapd purges.
Finally, we select Yes to move the old database, and No to Allow LDAPv2 protocol.
That’s it. This completes the installation and configuration.
Populating the LDAP database
Now let’s add initial data to the LDAP database. We’ll do this from a file and create a single entry. For that, we run the below command.
$ nano ldap_data.ldif
In this new file, we add the below contents.
dn: ou=People,dc=bobcares,dc=com objectClass: organizationalUnit ou: People dn: ou=Groups,dc=bobcares,dc=com objectClass: organizationalUnit ou: Groups dn: cn=DEPARTMENT,ou=Groups,dc=bobcares,dc=com objectClass: posixGroup cn: SUBGROUP gidNumber: 5000 dn: uid=USER,ou=People,dc=bobcares,dc=com objectClass: inetOrgPerson objectClass: posixAccount objectClass: shadowAccount uid: USER sn: LASTNAME givenName: FIRSTNAME cn: FULLNAME displayName: DISPLAYNAME uidNumber: 10000 gidNumber: 5000 userPassword: USER gecos: FULLNAME loginShell: /bin/bash homeDirectory: USERDIRECTORY
We save and close this file. We add the content of the file to LDAP by running the below command.
$ ldapadd -x -D cn=admin,dc=bobcares,dc=com -W -f ldap_data.ldif
After successfully authenticating with the LDAP admin password, the data will be added. We then search the database with the command:
$ ldapsearch -x -LLL -b dc=bobcares,dc=com 'uid=USER' cn gidNumber
Where USER is the name of the user we added. As a result, of the above command, we must see a list of users.
Finally, now we have our first entry in the LDAP database.
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Today, we saw how our Support Engineers install OpenLDAP on Ubuntu